Gamma-ray Burst 110213A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:17:27 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      44
TRIGGER_NUM:     319267033
GRB_RA:           46.033d {+03h 04m 08s} (J2000),
                  46.228d {+03h 04m 55s} (current),
                  45.162d {+03h 00m 39s} (1950)
GRB_DEC:         +49.333d {+49d 19' 60"} (J2000),
                 +49.376d {+49d 22' 34"} (current),
                 +49.138d {+49d 08' 19"} (1950)
GRB_ERROR:       28.88 [deg radius, statistical plus systematic]
GRB_INTEN:       72 [cnts/sec]
DATA_SIGNIF:     5.90 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        15605 TJD;    44 DOY;   11/02/13
GRB_TIME:        19031.27 SOD {05:17:11.27} UT
GRB_PHI:         298.00 [deg]
GRB_THETA:       100.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      1.45
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      96%  GRB
2nd_MOST_LIKELY:   1%  Generic SGR
DETECTORS:       0,0,0, 0,1,1, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:       326.45d {+21h 45m 49s}  -13.47d {-13d 28' 21"}
SUN_DIST:         93.69 [deg]   Sun_angle= -5.3 [hr] (East of Sun)
MOON_POSTN:       75.17d {+05h 00m 40s}  +24.00d {+23d 59' 52"}
MOON_DIST:        33.98 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      144.04, -8.02 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       58.28, 30.62 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 124.60,20.80 [deg].

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:17:45 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      66
TRIGGER_NUM:     319267033
GRB_RA:           27.500d {+01h 50m 00s} (J2000),
                  27.662d {+01h 50m 39s} (current),
                  26.772d {+01h 47m 05s} (1950)
GRB_DEC:         +34.733d {+34d 43' 60"} (J2000),
                 +34.788d {+34d 47' 17"} (current),
                 +34.486d {+34d 29' 08"} (1950)
GRB_ERROR:       13.88 [deg radius, statistical plus systematic]
GRB_INTEN:       307 [cnts/sec]
DATA_SIGNIF:     8.70 [sigma]
INTEG_TIME:      0.512 [sec]
GRB_DATE:        15605 TJD;    44 DOY;   11/02/13
GRB_TIME:        19031.27 SOD {05:17:11.27} UT
GRB_PHI:         293.00 [deg]
GRB_THETA:        80.00 [deg]
DATA_TIME_SCALE: 0.5120 [sec]
HARD_RATIO:      1.31
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      96%  GRB
2nd_MOST_LIKELY:   1%  Generic SGR
DETECTORS:       0,0,0, 0,1,1, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:       326.45d {+21h 45m 49s}  -13.47d {-13d 28' 20"}
SUN_DIST:         75.42 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:       75.17d {+05h 00m 40s}  +24.00d {+23d 59' 52"}
MOON_DIST:        42.37 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      136.37,-26.61 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       38.26, 21.83 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 124.60,20.80 [deg].

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:17:50 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      56
TRIGGER_NUM:     319267033
GRB_RA:           43.230d {+02h 52m 55s} (J2000),
                  43.431d {+02h 53m 43s} (current),
                  42.330d {+02h 49m 19s} (1950)
GRB_DEC:         +54.050d {+54d 02' 60"} (J2000),
                 +54.095d {+54d 05' 42"} (current),
                 +53.846d {+53d 50' 44"} (1950)
GRB_ERROR:       7.44 [deg radius, statistical only]
DATA_SIGNIF:     5.60 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        15605 TJD;    44 DOY;   11/02/13
GRB_TIME:        19031.27 SOD {05:17:11.27} UT
GRB_PHI:         303.00 [deg]
GRB_THETA:       101.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   413 (Gnd S/W Version number)
SUN_POSTN:       326.45d {+21h 45m 49s}  -13.47d {-13d 28' 20"}
SUN_DIST:         93.45 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.17d {+05h 00m 41s}  +24.00d {+23d 59' 52"}
MOON_DIST:        38.27 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      140.26, -4.68 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       58.24, 35.65 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:17:53 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      69
TRIGGER_NUM:     319267033
GRB_RA:           39.200d {+02h 36m 48s} (J2000),
                  39.375d {+02h 37m 30s} (current),
                  38.417d {+02h 33m 40s} (1950)
GRB_DEC:         +39.300d {+39d 17' 60"} (J2000),
                 +39.348d {+39d 20' 52"} (current),
                 +39.083d {+39d 04' 59"} (1950)
GRB_ERROR:       7.22 [deg radius, statistical plus systematic]
GRB_INTEN:       347 [cnts/sec]
DATA_SIGNIF:     23.40 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        15605 TJD;    44 DOY;   11/02/13
GRB_TIME:        19031.27 SOD {05:17:11.27} UT
GRB_PHI:         290.00 [deg]
GRB_THETA:        90.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      1.72
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      85%  GRB
2nd_MOST_LIKELY:  13%  Generic SGR
DETECTORS:       0,0,0, 0,1,1, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:       326.45d {+21h 45m 49s}  -13.47d {-13d 28' 20"}
SUN_DIST:         85.81 [deg]   Sun_angle= -4.9 [hr] (East of Sun)
MOON_POSTN:       75.17d {+05h 00m 41s}  +24.00d {+23d 59' 52"}
MOON_DIST:        33.81 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      144.25,-19.17 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       49.44, 22.74 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 124.60,20.80 [deg].

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:18:00 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      65
TRIGGER_NUM:     319267033
GRB_RA:           63.030d {+04h 12m 07s} (J2000),
                  63.232d {+04h 12m 56s} (current),
                  62.122d {+04h 08m 29s} (1950)
GRB_DEC:         +47.290d {+47d 17' 24"} (J2000),
                 +47.318d {+47d 19' 05"} (current),
                 +47.162d {+47d 09' 42"} (1950)
GRB_ERROR:       11.61 [deg radius, statistical only]
DATA_SIGNIF:     6.90 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        15605 TJD;    44 DOY;   11/02/13
GRB_TIME:        19031.27 SOD {05:17:11.27} UT
GRB_PHI:         289.00 [deg]
GRB_THETA:       109.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   413 (Gnd S/W Version number)
SUN_POSTN:       326.45d {+21h 45m 49s}  -13.47d {-13d 28' 20"}
SUN_DIST:        104.42 [deg]   Sun_angle= -6.5 [hr] (East of Sun)
MOON_POSTN:       75.17d {+05h 00m 41s}  +24.00d {+23d 59' 52"}
MOON_DIST:        25.19 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      154.37, -2.96 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       70.04, 25.70 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:18:08 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      68
TRIGGER_NUM:     319267033
GRB_RA:           36.990d {+02h 27m 58s} (J2000),
                  37.167d {+02h 28m 40s} (current),
                  36.195d {+02h 24m 47s} (1950)
GRB_DEC:         +43.090d {+43d 05' 24"} (J2000),
                 +43.139d {+43d 08' 22"} (current),
                 +42.866d {+42d 51' 59"} (1950)
GRB_ERROR:       1.94 [deg radius, statistical only]
DATA_SIGNIF:     33.20 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        15605 TJD;    44 DOY;   11/02/13
GRB_TIME:        19031.27 SOD {05:17:11.27} UT
GRB_PHI:         294.00 [deg]
GRB_THETA:        91.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   413 (Gnd S/W Version number)
SUN_POSTN:       326.45d {+21h 45m 49s}  -13.47d {-13d 28' 20"}
SUN_DIST:         85.69 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:       75.17d {+05h 00m 41s}  +24.00d {+23d 59' 52"}
MOON_DIST:        36.55 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      141.06,-16.36 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       49.16, 26.87 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:17:51 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     445414,   Seg_Num: 0
GRB_RA:           43.004d {+02h 52m 01s} (J2000),
                  43.196d {+02h 52m 47s} (current),
                  42.145d {+02h 48m 35s} (1950)
GRB_DEC:         +49.291d {+49d 17' 29"} (J2000),
                 +49.337d {+49d 20' 12"} (current),
                 +49.086d {+49d 05' 11"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5714 [cnts]    Image_Peak=205 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   147     E_range: 25-100 keV
BKG_INTEN:       29158 [cnts]
BKG_TIME:        19033.34 SOD {05:17:13.34} UT
BKG_DUR:         8 [sec]
GRB_DATE:        15605 TJD;    44 DOY;   11/02/13
GRB_TIME:        19049.53 SOD {05:17:29.53} UT
GRB_PHI:          38.51 [deg]
GRB_THETA:        48.47 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     32.68 [sigma]
IMAGE_SIGNIF:    12.08 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  +1  +0  +1  +2  +0 
SUN_POSTN:       326.45d {+21h 45m 49s}  -13.47d {-13d 28' 20"}
SUN_DIST:         91.80 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.17d {+05h 00m 41s}  +24.00d {+23d 59' 52"}
MOON_DIST:        35.56 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.30, -8.99 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       56.09, 31.23 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 109.54,-8.79 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:19:41 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     445414,   Seg_Num: 0
GRB_RA:           42.9641d {+02h 51m 51.38s} (J2000),
                  43.1557d {+02h 52m 37.36s} (current),
                  42.1058d {+02h 48m 25.38s} (1950)
GRB_DEC:         +49.2726d {+49d 16' 21.3"} (J2000),
                 +49.3178d {+49d 19' 04.1"} (current),
                 +49.0674d {+49d 04' 02.8"} (1950)
GRB_ERROR:       5.5 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.09e-09 [erg/cm2/sec]
GRB_SIGNIF:      7.48 [sigma]
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19141.24 SOD {05:19:01.24} UT,   91.7 [sec] since BAT Trigger Time
TAM[0-3]:        327.65 237.22 261.48 243.35
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       326.45d {+21h 45m 49s}  -13.47d {-13d 28' 19"}
SUN_DIST:         91.77 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.19d {+05h 00m 45s}  +24.00d {+23d 59' 53"}
MOON_DIST:        35.58 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.28, -9.02 [deg] galactic lon,lat of the burst
ECL_COORDS:       56.06, 31.23 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 1.92 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:19:58 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     445414,   Seg_Num: 0
GRB_RA:           42.9641d {+02h 51m 51.3s} (J2000),
                  43.1557d {+02h 52m 37.3s} (current),
                  42.1058d {+02h 48m 25.3s} (1950)
GRB_DEC:         +49.2726d {+49d 16' 21.3"} (J2000),
                 +49.3178d {+49d 19' 04.1"} (current),
                 +49.0674d {+49d 04' 02.8"} (1950)
GRB_ERROR:       5.4 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       56 [cnts]
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19141.24 SOD {05:19:01.24} UT,   91.7 [sec] since BAT Trigger Time
CENTROID_X:      301.54,  raw= 302  [pixels]
CENTROID_Y:      317.32,  raw= 317  [pixels]
ROLL:            251.11 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   45.54
GRB_POS_XRT_Z:   -1.77
IMAGE_URL:       sw00445414000msxps_rw.img
SUN_POSTN:       326.45d {+21h 45m 49s}  -13.47d {-13d 28' 19"}
SUN_DIST:         91.77 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.19d {+05h 00m 46s}  +24.00d {+23d 59' 53"}
MOON_DIST:        35.58 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.28, -9.02 [deg] galactic lon,lat of the burst
ECL_COORDS:       56.06, 31.23 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:19:53 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     445414,   Seg_Num: 0
GRB_RA:           42.9641d {+02h 51m 51.3s} (J2000),
                  43.1557d {+02h 52m 37.3s} (current),
                  42.1058d {+02h 48m 25.3s} (1950)
GRB_DEC:         +49.2726d {+49d 16' 21.3"} (J2000),
                 +49.3178d {+49d 19' 04.1"} (current),
                 +49.0674d {+49d 04' 02.8"} (1950)
GRB_ERROR:       5.4 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       56 [cnts]
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19141.24 SOD {05:19:01.24} UT,   91.7 [sec] since BAT Trigger Time
CENTROID_X:      301.54,  raw= 302  [pixels]
CENTROID_Y:      317.32,  raw= 317  [pixels]
ROLL:            251.11 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   45.54
GRB_POS_XRT_Z:   -1.77
IMAGE_URL:       sw00445414000msxps_rw.img
SUN_POSTN:       326.45d {+21h 45m 49s}  -13.47d {-13d 28' 19"}
SUN_DIST:         91.77 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.19d {+05h 00m 45s}  +24.00d {+23d 59' 53"}
MOON_DIST:        35.58 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.28, -9.02 [deg] galactic lon,lat of the burst
ECL_COORDS:       56.06, 31.23 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:21:27 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     445414,   Seg_Num: 0
GRB_RA:           43.004d {+02h 52m 01s} (J2000),
                  43.196d {+02h 52m 47s} (current),
                  42.145d {+02h 48m 35s} (1950)
GRB_DEC:         +49.291d {+49d 17' 29"} (J2000),
                 +49.337d {+49d 20' 12"} (current),
                 +49.086d {+49d 05' 11"} (1950)
GRB_DATE:        15605 TJD;    44 DOY;   11/02/13
GRB_TIME:        19049.53 SOD {05:17:29.53} UT
TRIGGER_INDEX:   147
GRB_PHI:          38.51 [deg]
GRB_THETA:        48.47 [deg]
DELTA_TIME:      -18.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     32.68 [sigma]
IMAGE_SIGNIF:    12.08 [sigma]
LC_URL:          sw00445414000msb.lc
SUN_POSTN:       326.46d {+21h 45m 49s}  -13.47d {-13d 28' 17"}
SUN_DIST:         91.80 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.21d {+05h 00m 49s}  +24.00d {+23d 59' 54"}
MOON_DIST:        35.58 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.30, -8.99 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       56.09, 31.23 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Lightcurve.  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 109.54,-8.79 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:28:00 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.958d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 03"} (J2000)
POINT_ROLL:      251.111d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19149.86 SOD {05:19:09.86} UT,   100.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        8.026
N_STARS:         128
X_OFFSET:        272 [pixels]
Y_OFFSET:        648 [pixels]
X_MAX:           1231 [pixels]
Y_MAX:           1607 [pixels]
DET_THRESH:      25
PHOTO_THRESH:    15
SL_URL:          sw00445414000msufc0100.fits
SUN_POSTN:       326.46d {+21h 45m 50s}  -13.47d {-13d 28' 12"}
SUN_DIST:         91.76 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.27d {+05h 01m 05s}  +24.00d {+23d 59' 57"}
MOON_DIST:        35.64 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:28:19 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.958d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 03"} (J2000)
POINT_ROLL:      251.111d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19149.86 SOD {05:19:09.86} UT,   100.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        8.026
N_STARS:         128
X_OFFSET:        272 [pixels]
Y_OFFSET:        648 [pixels]
X_MAX:           1231 [pixels]
Y_MAX:           1607 [pixels]
DET_THRESH:      25
PHOTO_THRESH:    15
SL_URL:          sw00445414000msufc0100.fits
SUN_POSTN:       326.46d {+21h 45m 50s}  -13.47d {-13d 28' 12"}
SUN_DIST:         91.76 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.27d {+05h 01m 06s}  +24.00d {+23d 59' 57"}
MOON_DIST:        35.64 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:29:54 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.958d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 03"} (J2000)
ROLL:            251.111d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19149.86 SOD {05:19:09.86} UT,   100.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     319267156
X_OFFSET:        748 [pixels]
Y_OFFSET:        804 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       908
Y_GRB_POS:       964
BINNING_INDEX:   1
IM_URL:          sw00445414000msuni0107.fits
SUN_POSTN:       326.46d {+21h 45m 51s}  -13.47d {-13d 28' 10"}
SUN_DIST:         91.76 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.29d {+05h 01m 09s}  +24.00d {+23d 59' 57"}
MOON_DIST:        35.65 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:30:00 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.958d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 03"} (J2000)
ROLL:            251.111d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19149.86 SOD {05:19:09.86} UT,   100.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     319267156
X_OFFSET:        748 [pixels]
Y_OFFSET:        804 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       908
Y_GRB_POS:       964
BINNING_INDEX:   1
IM_URL:          sw00445414000msuni0107.fits
SUN_POSTN:       326.46d {+21h 45m 51s}  -13.47d {-13d 28' 10"}
SUN_DIST:         91.76 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.29d {+05h 01m 10s}  +24.00d {+23d 59' 58"}
MOON_DIST:        35.65 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN Circular #11705
V. D'Elia (ASDC), N. Gehrels (NASA/GSFC), J. M. Gelbord (PSU), S. T. Holland (CRESST/USRA/GSFC), H. A. Krimm (CRESST/GSFC/USRA), C. B. Markwardt (NASA/GSFC), D. M. Palmer (LANL), M. H. Siegel (PSU), E. Sonbas (GSFC/USRA/Adiyaman Univ.), E. Troja (NASA/GSFC/ORAU) and T. N. Ukwatta (MSU) report on behalf of the Swift Team:
At 05:17:29 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 110213A (trigger=445414). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 43.004, +49.291 which is
```
   RA(J2000) = 02h 52m 01s
   Dec(J2000) = +49d 17' 29"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single-peaked structure with a duration of about 10 sec. The peak count rate was ~3000 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began observing the field at 05:19:01.2 UT, 91.7 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 42.9641, +49.2726 which is equivalent to:
```
   RA(J2000)  = 02h 51m 51.38s
   Dec(J2000) = +49d 16' 21.3"
```
with an uncertainty of 5.5 arcseconds (radius, 90% containment). This location is 115 arcseconds from the BAT onboard position, within the BAT error circle. No event data are yet available to determine the column density using X-ray spectroscopy.
UVOT took a finding chart exposure of 150 seconds with the White filter starting 100 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at
```
 RA(J2000)  =	02:51:51.40 =  42.96417
 DEC(J2000) = +49:16:23.6  =  49.27321
```
with a 90%-confidence error radius of about 0.61 arc sec. This position is 2.2 arc sec. from the center of the XRT error circle. The estimated magnitude is 16.31 with a 1-sigma error of about 0.14. No correction has been made for the expected extinction corresponding to E(B-V) of 0.32.
Burst Advocate for this burst is V. D'Elia (delia AT asdc.asi.it). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:33:37 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.956d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 01"} (J2000)
POINT_ROLL:      251.110d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19361.96 SOD {05:22:41.96} UT,   312.4 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.992
N_STARS:         69
X_OFFSET:        428 [pixels]
Y_OFFSET:        484 [pixels]
X_MAX:           1387 [pixels]
Y_MAX:           1443 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00445414000msufc0312.fits
SUN_POSTN:       326.46d {+21h 45m 51s}  -13.47d {-13d 28' 07"}
SUN_DIST:         91.76 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.33d {+05h 01m 18s}  +24.00d {+23d 59' 59"}
MOON_DIST:        35.67 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:33:52 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.956d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 01"} (J2000)
POINT_ROLL:      251.110d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19361.96 SOD {05:22:41.96} UT,   312.4 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.992
N_STARS:         69
X_OFFSET:        428 [pixels]
Y_OFFSET:        484 [pixels]
X_MAX:           1387 [pixels]
Y_MAX:           1443 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00445414000msufc0312.fits
SUN_POSTN:       326.46d {+21h 45m 51s}  -13.47d {-13d 28' 07"}
SUN_DIST:         91.76 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.33d {+05h 01m 19s}  +24.00d {+23d 59' 59"}
MOON_DIST:        35.67 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:35:17 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     445414,   Seg_Num: 0
GRB_RA:           42.9643d {+02h 51m 51.43s} (J2000),
                  43.1559d {+02h 52m 37.40s} (current),
                  42.1060d {+02h 48m 25.43s} (1950)
GRB_DEC:         +49.2730d {+49d 16' 22.8"} (J2000),
                 +49.3182d {+49d 19' 05.6"} (current),
                 +49.0678d {+49d 04' 04.2"} (1950)
GRB_ERROR:       2.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19321.00 SOD {05:22:01.00} UT,   271.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       326.46d {+21h 45m 52s}  -13.47d {-13d 28' 06"}
SUN_DIST:         91.76 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.34d {+05h 01m 22s}  +24.00d {+23d 59' 60"}
MOON_DIST:        35.67 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.28, -9.02 [deg] galactic lon,lat of the burst
ECL_COORDS:       56.06, 31.23 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 1.1% < P(seren) < 2.8%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:35:28 UT
NOTICE_TYPE:     Swift-UVOT Position
TRIGGER_NUM:     445414,   Seg_Num: 0
GRB_RA:           42.9641d {+02h 51m 51.38s} (J2000),
                  43.1557d {+02h 52m 37.36s} (current),
                  42.1058d {+02h 48m 25.38s} (1950)
GRB_DEC:         +49.2732d {+49d 16' 23.5"} (J2000),
                 +49.3184d {+49d 19' 06.3"} (current),
                 +49.0680d {+49d 04' 04.9"} (1950)
GRB_ERROR:       1.1 [arcsec radius, statistical only]
GRB_MAG:         16.63 +/- 0.40 [mag]
FILTER:          10, White
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19154.00 SOD {05:19:14.00} UT,   104.5 [sec] since BAT Trigger Time
SUN_POSTN:       326.47d {+21h 45m 52s}  -13.47d {-13d 28' 06"}
SUN_DIST:         91.76 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.34d {+05h 01m 23s}  +24.00d {+23d 59' 60"}
MOON_DIST:        35.67 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.28, -9.02 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       56.06, 31.23 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT UVOT Position Notice.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The UVOT position is 1.8 arcsec from the XRT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:35:37 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.956d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 01"} (J2000)
ROLL:            251.110d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19361.96 SOD {05:22:41.96} UT,   312.4 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     319267368
X_OFFSET:        748 [pixels]
Y_OFFSET:        804 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       908
Y_GRB_POS:       964
BINNING_INDEX:   1
IM_URL:          sw00445414000msuni0319.fits
SUN_POSTN:       326.47d {+21h 45m 52s}  -13.47d {-13d 28' 05"}
SUN_DIST:         91.76 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.35d {+05h 01m 23s}  +24.00d {+23d 59' 60"}
MOON_DIST:        35.68 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:35:54 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.956d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 01"} (J2000)
ROLL:            251.110d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19361.96 SOD {05:22:41.96} UT,   312.4 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     319267368
X_OFFSET:        748 [pixels]
Y_OFFSET:        804 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       908
Y_GRB_POS:       964
BINNING_INDEX:   1
IM_URL:          sw00445414000msuni0319.fits
SUN_POSTN:       326.47d {+21h 45m 52s}  -13.47d {-13d 28' 05"}
SUN_DIST:         91.76 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.35d {+05h 01m 24s}  +24.00d {+24d 00' 00"}
MOON_DIST:        35.68 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN Circular #11706
S. B. Cenko (UC Berkeley) reports on behalf of a larger collaboration:
We have imaged the error circle of GRB110213A (D'Elia et al., GCN 11705) with the automated Palomar 60 inch telescope. Observations began at 05:19 UT (~ 2 minutes after the burst trigger time) and were taken in the r' filter. We detect a bright source at the location of the UVOT afterglow, with coordinates:
02:51:51.43 +49:16:23.3
Using several USNO-B1 field stars for comparison, we measure a magnitude of R ~ 17.1 at this time. Observations are ongoing.
GCN Circular #11707
W. Rujopakarn (Steward), B. E. Schaefer (Louisiana State), E.S. Rykoff (LBNL), report on behalf of the ROTSE collaboration:
ROTSE-IIIb, located at McDonald Observatory, Texas, responded to GRB 110213A (Swift trigger 445414). The first image was at 05:17:56.7 UT, 27.1 s after the burst (0.7 s after the GCN notice time). The unfiltered images are calibrated relative to USNO A2.0. We detect a 15.8 magnitude, fading source with coordinates:
02:51:51.11 +49:16:20.57 (J2000), with positional uncertainty of 1' or better
```
start UT mag mlim(of image)
----------------------------------
05:17:56.7 15.8 17.0
```
This source is not visible in DSS (second epoch), 2MASS or the MPChecker database.
Our light curve shows a beautiful rise starting 100 seconds after the Swift trigger, reaching a peak around 14.5 mag at 200 seconds after the trigger and then starting a fast decline. Continuing observations are in progress.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:54:52 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.957d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 01"} (J2000)
POINT_ROLL:      251.110d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19916.61 SOD {05:31:56.61} UT,   867.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.391
N_STARS:         190
X_OFFSET:        188 [pixels]
Y_OFFSET:        244 [pixels]
X_MAX:           1627 [pixels]
Y_MAX:           1683 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00445414000msufc0867.fits
SUN_POSTN:       326.48d {+21h 45m 55s}  -13.46d {-13d 27' 49"}
SUN_DIST:         91.75 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.54d {+05h 02m 09s}  +24.00d {+24d 00' 08"}
MOON_DIST:        35.78 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:55:14 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.957d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 01"} (J2000)
POINT_ROLL:      251.110d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19916.61 SOD {05:31:56.61} UT,   867.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.391
N_STARS:         190
X_OFFSET:        188 [pixels]
Y_OFFSET:        244 [pixels]
X_MAX:           1627 [pixels]
Y_MAX:           1683 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00445414000msufc0867.fits
SUN_POSTN:       326.48d {+21h 45m 55s}  -13.46d {-13d 27' 49"}
SUN_DIST:         91.75 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.54d {+05h 02m 10s}  +24.00d {+24d 00' 08"}
MOON_DIST:        35.78 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:56:18 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.957d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 01"} (J2000)
ROLL:            251.110d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19916.61 SOD {05:31:56.61} UT,   867.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     319267923
X_OFFSET:        747 [pixels]
Y_OFFSET:        803 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       907
Y_GRB_POS:       963
BINNING_INDEX:   1
IM_URL:          sw00445414000msuni0874.fits
SUN_POSTN:       326.48d {+21h 45m 55s}  -13.46d {-13d 27' 48"}
SUN_DIST:         91.74 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.55d {+05h 02m 13s}  +24.00d {+24d 00' 08"}
MOON_DIST:        35.79 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 13 Feb 11 05:56:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     445414,   Seg_Num: 0
POINT_RA:         42.957d {+02h 51m 50s} (J2000)
POINT_DEC:       +49.284d {+49d 17' 01"} (J2000)
ROLL:            251.110d
IMG_START_DATE:  15605 TJD;    44 DOY;   11/02/13
IMG_START_TIME:  19916.61 SOD {05:31:56.61} UT,   867.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     319267923
X_OFFSET:        747 [pixels]
Y_OFFSET:        803 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       907
Y_GRB_POS:       963
BINNING_INDEX:   1
IM_URL:          sw00445414000msuni0874.fits
SUN_POSTN:       326.48d {+21h 45m 55s}  -13.46d {-13d 27' 48"}
SUN_DIST:         91.74 [deg]   Sun_angle= -5.1 [hr] (East of Sun)
MOON_POSTN:       75.56d {+05h 02m 13s}  +24.00d {+24d 00' 09"}
MOON_DIST:        35.79 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      142.27, -9.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       56.06, 31.24 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN Circular #11708
P. A. Milne (U. Arizona) and S. B. Cenko (UC Berkeley) report on behalf of a larger collaboration:
We have obtained a series of optical spectra of the afterglow of GRB 110213A (D'Elia et al, GCN 11705) with the Boller and Chivens Spectrograph mounted on the 2.3-m Bok telescope. Observations began at 05:53 UT (~ 36 minutes after the Swift trigger time) and cover the wavelength range from ~ 4000-8300 A.
We detect a series of strong, narrow absorption features corresponding to Mg II and Fe II at a common redshift of z = 1.46. Without the detection of fine structure lines or a DLA system, we cannot definitively identify this as the redshift of the GRB host galaxy. However, the lack of detection of Lyman alpha absorption down to ~ 4000 A limits the redshift of the host galaxy to z <~ 2.3.
GCN Circular #11709
Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill Observatory, Varkaus, Finland) report:
GRAS 011 (Global-Rent-a-Scope, Mayhill, New Mexico) CDK20 20 inch (0.51 m) f/6.8 and FLI ProLine PL11002M CCD camera were used to detect GRB 110213A optical afterglow. The observations were started at 2011-02-13 05:39:52 (UT) and stopped at 2011-02-13 06:14:37 (UT). Two unfiltered and one photometric R observations with 600s exposure times were made. The afterglow was detected at following position RA 02:51:51.42 and DEC +49:16:23.7 consistent those given by Cenko S.B. et al. (GCN 11706) to within positional errors.
The following magnitudes were obtained from the observations using NOMAD1 1392-0071642 (R = 15.230) as the comparison:
```
Tmid(s)+T0  Filter        Exp (sec)     Mag      Mag err   Limit
1643           unfilt         600             15.6       0.1         16.9
2306           unfilt         600             15.8       0.1         16.9
3128           Rc            600             15.9       0.2         16.5
```
A jpg image of the 600sec unfiltered observation is available at the following URL link: http://cutenews.kassiopeia.net/data/upimages/GRB110213A_text.jpg
GCN Circular #11710
W. Li and A. V. Filippenko, University of California, Berkeley, on behalf of the KAIT GRB team, report:
The robotic 0.76-m Katzman Automatic Imaging Telescope (KAIT) at Lick Observatory observed GRB 110213A (D'Elia et al., GCN 11705). The automatic sequence started at 05:18:43 UT, 74 s after the BAT trigger. The BAT location has been monitored in V, I, and clear filters, with varying exposure times. Our image processing pipeline found a new object within the BAT error circle, with the following position:
```
R. A. = 02:51:51.40
DEC.  = +49:16:23.2  (J2000), 
```
which is consistent with the reported afterglow position by D'Elia et al. (GCN 11705), Cenko (GCN 11706), and Rujopakarn et al. (GCN 11707). The OA has magnitude of 17.0 at t = 74 s, brightened to a peak of 14.6 at t = 300 s, then declined to mag 16.0 at t = 2000 s. The OA then displayed several episodes of re-brightening between t = 2000 s and 2600 s, at which point the observation was stopped due to a physical limit of KAIT.
GCN Circular #11712
J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
Using 2597 s of XRT Photon Counting mode data and 3 UVOT images for GRB 110213A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 42.96403, +49.27257 which is equivalent to:
```
RA (J2000): 02h 51m 51.37s
Dec (J2000): +49d 16' 21.2"
```
with an uncertainty of 1.5 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #11713
I. Korobtsev (ISTP), E. Elunko (ISTP), A. Volnova (SAI MSU), A. Pozanenko (IKI) on behalf of larger GRB follow up collaboration report:
We observed the Swift GRB 110213A (D'Elia et al., GCN 11705) with AZT-33IK telescope of Sayan observatory (Mondy) starting Feb.13 (UT) 11:26. In a few first images of exposure 60 s we clearly detect the UVOT afterglow with a preliminary brightness estimation R ~ 18.0 at 0.2566 days after burst. The photometry is based on USNO-B1 field stars.
Observation is continuing.
GCN Circular #11714
S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), V. D'Elia (ASDC),E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 110213A (trigger #445414) (D'Elia, et al., GCN Circ. 11705). The BAT ground-calculated position is RA, Dec = 42.978, 49.278 deg which is
```
     RA(J2000)  =  02h 51m 54.8s
     Dec(J2000) = +49d 16' 41.4"
```
with an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 5%.
The masked-tagged light curve shows low-level emission starting at about T-30 s and then a steep rise starting at T-3 s to a peak at T+0.5 s, followed by a slow decline out to about T+30 s. T90 (15-350 keV) is 48.0 +- 16.0 sec (estimated error including systematics).
The time-averaged spectrum from T-31.2 to T+32.8 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.83 +- 0.12. The fluence in the 15-150 keV band is 5.9 +- 0.4 x 10-6 erg/cm2. The 1-sec peak photon flux measured from T+8.31 sec in the 15-150 keV band is 1.6 +- 0.6 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/445414/BA/
GCN Circular #11715
T. N. Ukwatta (MSU), E. Sonbas (GSFC/USRA/Adiyaman Univ.), N. Gehrels (GSFC), J. Linnemann (MSU), K. Tollefson (MSU), and U. Abeysekara (MSU)
We observed the Swift GRB 110213A (D'Elia et al., GCN 11705) afterglow with the Lightbuckets 0.61m rental telescope LB-0001 in Rodeo, NM, USA. Under good weather conditions, four observations were carried out in the R filter starting 2011-02-13 at 05:33:14 UT (~ 15.7 mins after the GRB trigger).
The burst afterglow is clearly detected in all four observations and estimated magnitudes are given below:
Time after trigger Exposure (s) Filter Magnitude
```
15.7  mins (0.26 hours)     60              R      15.4 +/- 0.1
17.8  mins (0.30 hours)     60              R      15.5 +/- 0.1
19.9  mins (0.33 hours)     60              R      15.5 +/- 0.1
22.6  mins (0.38 hours)     60              R      15.7 +/- 0.1
```
The afterglow, not corrected for Galactic extinction, is calibrated against the USNO-B1.0 catalog.
GCN Circular #11717
Veli-Pekka Hentunen, Markku Nissinen, Tuomo Salmi and Harri Vilokki (Taurus Hill Observatory, Varkaus, Finland) report:
We continued optical observations of GRB 110213A optical afterglow. We used Celestron C14 XLT and SBIG ST-8XME CCD (Taurus Hill Observatory, Varkaus, Finland). The observations were started at 2011-02-13 17:18:32 (UT) and stopped at 2011-02-13 18:24:28 (UT). Three unfiltered and three photometric R observations with 600s exposure times were made. The afterglow was detected at following position RA 02:51:51.41 and DEC +49:16:23.0.
The following magnitudes were obtained from the observations using NOMAD1 1392-0071642 (R=15.230) as the comparison:
```
Tmid(s)+T0    Filter     Exp (sec)     Mag         Mag err      Limit
44163             unfilt     3x600            19.1       0.2             20.3
46231             Rc        3x600            19.2       0.3             20.1 
```
GCN Circular #11718
N.P.M. Kuin (MSSL/UCL) and V. D'Elia (ASDC) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 110213A 100 s after the BAT trigger (D'Elia et al., GCN Circ. 11705). This GRB was reported by many observers. We see an initial peak around T+300s after which the GRB declines in brightness until around T+1500s when a small rebrightening occurs. A tentative redshift was reported by P.A. Milne (GCN Circ. No 11708) of z=1.46, which is consistent with the much fainter magnitudes we find in the uvm2 and uvw2 filters.
The refined uvot position (90% confidence limit, 0.5" accuracy) with reference to USNO-B1 is:
```
RA  (J2000) =  02h 51m 51.39s
DEC (J2000) =  49d 16' 23.54"
```
Preliminary magnitudes and 3-sigma upper limits in the UVOT photometric system (Poole et al. 2008, MNRAS, 383, 627) for the first finding chart (FC) exposures and summed with subsequent exposures up to about 2500s are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)     Mag (VEGA)

white_FC           100          250          147         16.36 +/- 0.05
u_FC               312          562          246         15.54 +/- 0.04

white              100         2579          517         16.57 +/- 0.01
v                  642         2455          227         16.19 +/- 0.04
b                  568         2206          178         16.77 +/- 0.03
u                  312         2529          448         15.94 +/- 0.02
uvw1               692         2505          198         17.28 +/- 0.08
uvm2               667         2479          218         18.72 +/- 0.20
uvw2               618         2606          238         19.10 +/- 0.18
```
The values quoted above are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.32 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #11719
D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ), S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of the MITSuME collaboration:
We observed the field of GRB 110213A (D'Elia et al., GCNC 11705) with the optical three color (g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope of Okayama Astrophysical Observatory. The observation started on 2011-02-13 09:45:46 UT (~4.5 hours after the burst). We detected the previously reported afterglow (Cenko, GCNC 11706) in all the three bands.
Photometric results and are listed below. We used GSC2.3 catalog for flux calibration.
```
#T0+[day]  MID-UT    T-EXP[sec]   g'  g'_err   Rc  Rc_err   Ic  Ic_err
----------------------------------------------------------------------
0.19696    10:01:06   1620.0    18.26  0.09  17.15  0.05  16.53  0.06
0.21845    10:32:02   1620.0    18.78  0.11  17.51  0.05  16.75  0.05
0.23993    11:02:59   1620.0    18.79  0.16  17.60  0.07  17.05  0.07
----------------------------------------------------------------------
```
T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]
GCN Circular #11721
G. Stratta (ASDC) and V. D'Elia (ASDC) report on behalf of the Swift-XRT team:
We have analysed 22 ks of XRT data for GRB 110213A (D'Elia et al. GCN Circ. 11705), from 81 s to 54.5 ks after the BAT trigger. The data comprise 121 s in Windowed Timing (WT) mode (the first 8 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN. Circ 11712).
The light curve can be modelled with a series of power-law decays. The initial decay index is alpha=5.2 (+0.5, -0.4). At T+141 s the decay flattens to an alpha of -0.22 (+0.10, -0.14). The light curve breaks again at T+1489 s to a decay with alpha=1.10 (+0.07, -0.08), before a final break at T+9954 s s after which the decay index is 2.14 (+0.10, -0.09).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.11 (+/-0.07). The best-fitting absorption column is 2.81 (+0.24, -0.23) x 10^21 cm^-2, in excess of the Galactic value of 2.2 x 10^21 cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.1 x 10^-11 (6.8 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     2.81 (+0.24, -0.23) x 10^21 cm^-2
Galactic foreground: 2.2 x 10^21 cm^-2
Excess significance: 20.5 sigma
Photon index:	     2.11 (+/-0.07)
```
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00445414.
This circular is an official product of the Swift-XRT team.
GCN Circular #11723
S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, report:
The long GRB 110213A, (Swift/BAT trigger=3D445414: D'Elia, et al., GCN 11705; Barthelmy et.al, GCN 11714) triggered Konus-Wind at T0=3D19048.893s UT (05:17:28.893)
The burst light curve consists of a single pulse with a total duration of ~50 s. The emission is seen up to ~2 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB110213_T19048/
As observed by Konus-Wind the burst had a fluence of (1.0 =B1 0.15)x10-5 erg/cm2, and a 256-ms peak flux, measured from T0+1.024s, of (1.4 =B1 0.2)x10-6 erg/cm2/s (both in the 20 keV - 2 MeV energy range).
The time-integrated spectrum of the burst (from T0 to T0+24.832 s) is best fitted in the 20 keV - 2 MeV range by a power law with exponential cutoff model, for which alpha =3D -1.65 (-0.2, +0.3), and Ep =3D 91(-26, +31) keV, chi2 =3D 62.5/61 dof.
The spectrum at the maximum count rate (measured from T0 to T0+8.448 s) is well fitted in the 20 keV - 2 MeV range by a power law with exponential cutoff model, for which alpha =3D -1.53 (-0.21, +0.24), and Ep =3D 110(-20, +32) keV, chi2 =3D 52.8/61 dof. This spectrum is nearly well fitted in the 20 keV - 2 MeV range by the GRB (Band) model, for which: the low-energy photon index alpha =3D -1.28 (-0.32, +0.44), the high energy photon index beta =3D -2.4 (-0.7, +0.2), the peak energy Ep =3D 89(-19, +28) keV, chi2 =3D 49.1/60 dof.
Assuming the Bok telescope redshift z =3D 1.46 (Milne & Cenko, GCN 11708) and a standard cosmology model with H_0 =3D 71 km/s/Mpc, Omega_M =3D 0.27= , Omega_Lambda =3D 0.73, the isotropic energy release E_iso is (5.5 =B1 0.08)x10^52 erg, the peak luminosity L_iso_max is (1.9 =B1 0.3)x10^52 erg/s, and Ep_rest is 224 =B1 74 keV.
All the quoted results are preliminary. All the quoted errors are at the 90% confidence level.
GCN Circular #11724
H. Nakajima, Y. Yatsu, T. Enomoto, K. Kawakami, K. Tokoyoda, T. Ohkawa, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration:
We observed the field of GRB 110213A (D'Elia et al , GCNC 11705) with the optical three color (g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope of Akeno Observatory. The observation started on 2011-02-13 8:37 UT (~3.3 hours after the burst). We detected the previously reported afterglow (Cenko et al., GCN 11706) in all three bands.
Photometric results and are listed below. We used GSC2.3 catalog for flux calibration.
```
T0+[day]   MID-UT   T-EXP[sec]    g'             Rc           Ic
-----------------------------------------------------------------------
0.2083    10:17:51    2340      18.20+-0.06   17.28+-0.04   16.62+-0.04
-----------------------------------------------------------------------
```
T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]
GCN Circular #11727
S. Foley (MPE) reports on behalf of the Fermi GBM Team:
"At 05:17:11.27 UT on 13 February 2011, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 110213A (trigger 319267033 / 110213220) which was also detected by the Swift/BAT (D'Elia et al. 2011, GCN 11705). The GBM on-ground location is consistent with the Swift position.
The angle from the Fermi LAT boresight is 101 degrees.
The GBM light curve consists of two main pulses with a duration (T90) of about 33 s (50-300 keV). The time-averaged spectrum from T0-3.072 s to T0+31.745 s is well fit by a power law function with an exponential high-energy cutoff. The power law index is -1.44 (+/- 0.05) and the cutoff energy, parameterized as Epeak, is 98.4 (+8.5/-6.9) keV.
The event fluence (10-1000 keV) in this time interval is (1.03 +/- 0.03)E-05 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+18.17 s in the 10-1000 keV band is 17.7 +/- 0.5 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN Circular #11728
M. De Pasquale (MSSL-UCL), V. D'Elia (ASDC) and P. Kuin (MSSL-UCL) report, on behalf of the Swift team:
GRB110213a (D'Elia et al., GCN circ 11705) exhibits an interesting behaviour both in the X-ray and optical bands. After a broad peak and phase of normal decline, the lightcurves show achromatic breaks at about T0+10 ks, after which the slopes in both bands becomes about -2. These data strongly indicate that we are seeing a very early jet break. We encourage observations from ground facilities.
The predicted magnitudes for 00:00 UT of 15/2/2011 are R ~ 22.6, v ~ 21.7, b ~ 23.8, u ~ 21.7.
GCN Circular #11730
J. Wren, W.T. Vestrand, P.R. Wozniak, H. Davis, of Los Alamos National Laboratory report:
The RAPTOR telescope system responded to Swift trigger 445414 (V. D'Elia et al., GCN 11705) under fair observing conditions. Our narrow-field instruments began observing the location at 05:17:58.2 UTC, 28.7 seconds after the initial BAT trigger. We detect the optical counterpart at the location reported by the Swift UVOT team. The counterpart brightens from below our threshold at around 100 seconds after the BAT trigger. It reaches a peak magnitude of 14.7 at T~300 s. The counterpart then begins a steady decline to magnitude 16.0 at T~2000 s. At that point, the counterpart re-brightens to a plateau at roughly magnitude 15.8 for about an hour before resuming the fading behavior. The following table gives a sample of our observations:
```
t-mid(s)    exp(s)     mag     mag-err
--------------------------------------------
143.80      10.0      15.23    0.03
352.60      10.0      14.68    0.02
2179.60     30.0      16.12    0.03
4522.90     30.0      15.58    0.03
7172.30     30.0      16.00    0.04
```
The unfiltered images were calibrated against the USNO-B1 R-band.
GCN Circular #11731
L.P. Xin, Y.L. Qiu, J.Y. Wei, J. Wang, J.S. Deng, C. Wu, X. H. Han, M, Zhai on behalf of EAFON report:
We observed GRB 110213A (V. D'Elia et al. GCN11705 ) with Xinglong TNT telescope for two epochs from Feb 13th to Feb 14th. A series of R-band images were obtained with an exposure time of 300 sec for each frame.
The optical afterglow counterpart (e.g. V. D'Elia et al. GCN11705; Cenko GCN 11706; Wren et al. GCN 11730 ) could be clearly detected in each frame otained at Feb 13th. It was also detected at Feb 14th after combining 12 frames.
The brightness of the afterglow was estimated to be about 20.2 +/- 0.2 mag relatively to USNO B1.0 R2 mag at the mean time of 1.24 days after the burst.
Further observations are encouraged.
This message may be cited.

GCN Circular #11733
Zhao X. H., Bai J. M., & Mao J. report on behalf of the YNAO-GMG Observation:
We observed GRB110213A (D'Elia et al., GCN circ 11705) using one 2.4m telescope of Yunnan Observatory located at Gao-Mei Gu (GMG) about 7hr after the trigger. The afterglow was clearly detected. The preliminary results are:

mid time (UT)          filter   exposure time (min)  magnitude
2011-02-13 12:48:22       R           20                17.4
2011-02-13 13:08:55       V           20                18.2
2011-02-13 13:34:29       B           30                18.9
2011-02-13 14:00:28       B           20                19.0
2011-02-13 14:20:39       V           20                18.3
2011-02-13 14:40:50       R           20                18.3

The magnitudes were calibrated by NOMAD1.
This meesage may be cited.

GCN Circular #11742
A. Volnova (SAI MSU), A. Pozanenko (IKI), I. Korobtsev (ISTP), E. Elunko (ISTP) on behalf of larger GRB follow up collaboration report:
We observed the Swift GRB 110213A (D'Elia et al., GCN 11705) with AZT-33IK telescope of Sayan observatory (Mondy) between Feb.13 (UT) 11:23 - 13:21 (Korobtsev et al., GCN 11713) and Feb. 15 (UT) 11:55 - 12:55. We took several series in both epochs in R filter. The optical afterglow (D'Elia et al., GCN 11705, Cenko GCN 11706, Rujopakarn et al., GCN 1707) is clearly visible on single 60 s exposure images on Feb. 13, and afterglow is visible in a stacked image on Feb. 15. During our observations within 2 hours on Feb. 13 (0.2555 - 0.3316 days after burst) the brightness of the afterglow was not changing within error bars of about 0.06m. One can suggest that we observed a plateau phase or a broad peak of the afterglow light curve. The afterglow is still bright (R ~ 20.45) at 2.297 days after burst.
The photometry based on the USNO-B1.0 star 1392-0070724 (J2000) RA=02 51 53.41, Dec= +49 16 02.9, assuming R=16.83:
```
T0+       Filter,   Exposure, OT mag.,
(mid, d)              (s)

0.2555  R          4x60        17.61 +/- 0.06
0.3260  R          4x60        17.76 +/- 0.07
2.2973  R          3600        20.45 +/- 0.12
```
The photometry above is still preliminary.
GCN Circular #11744
V. Rumyantsev(CrAO), K. Antoniuk (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of the Swift GRB 110213A (D'Elia et al., GCN 11705) with AZT-11 telescope of CrAO between Feb. 14 (UT) 19:25 - 20:25 under poor seeing of about 5". We do not detect the UVOT afterglow up to R=19.5 (3 sigma). The photometry based on the USNO-B1.0 star 1392-0070724 (J2000) 02 51 53.41 +49 16 02.9, assuming R=16.83:
```
T0+      Filter,   Exposure, OT mag., UpperLimit
(mid, d)              (s)

1.6095  R         20x180     n/d          19.5
```
GCN Report 323.1
GCN_Report 323.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_323_1.pdf by V. DElia at ASDC titled: "Final Swift Observations of GRB 110213A"
GCN Circular #11832
GRB 110213A, the review of the sky area in plate archives V.V. Golovnya, L.M. Kizyun, L.K. Pakuliak (Main Astro Obs, Kyiv) report:
We have undertaken the review of the sky area of GRB 110213A (J.P. Osborne et al. GCN11712) on astronegatives, collected in Ukrainian NAS Main astronomical observatory plate archive (1976-1996). All the plates with the possible object appearance are digitized using Microtek ScanMaker 9800XL TMA flatbed scanner and have been placed into Golosiiv Plate Archive database DBGPA with open access to them.
The list of plates is given in the table:
```
YYYYMMDD	UT	Plates	Exp.	LimMag
19831203	19:41:42	GUA040C000261A 	16.0	15.50
19840128	16:46:54	GUA040C000282A 	13.5	15.25
19840128	17:07:51	GUA040C000283A 	13.5	15.25
19841019	22:27:46	GUA040C000514A 	16.3	16.90
19851109	21:12:03	GUA040C000773A 	16.0	15.90
19871023	22:27:36	GUA040C001142  	16.0	16.40
19871023	22:48:58	GUA040C001143A 	16.0	17.85
19871223	18:25:56	GUA040C001174  	16.0	15.50
19871223	18:49:42	GUA040C001175  	16.2	17.85
19891026	22:17:26	GUA040C001526A 	17.0	16.15
```
We detect the object at the pointed place (J.P. Osborne et al) on the plates GUA040C001143A and GUA040C001175. Brightness of the object is estimated as V mag = 16.8.
```
Plates: the plate's identifier in GUA040C archive of DWA 
        (D/F=400/2000, M=103"/mm) of the Ukrainian NAS Main
        Astro obs in Kyiv (Marsden's number - 83)[1].
Exp.   - Duration of the maximum exposure (minutes). 
LimMag - Limited V mag, derived in the 8 minutes area around 
        the location given in J.P. Osborne et al. GCN 11712: 
        RA(J2000)= 02h 51m 51.37s, Dec(J2000)= +49d 16' 21.2". 
```
The preview images of 10 areas together with the 15x7 min.of arc area from SkyMap can be found in http://gua.db.ukr-vo.org/img/grb/110213A/index.html The images with full resolution are available via e-mail on demand.
References: 1.L.Pakuliak DATABASE of GOLOSIIV PLATE ARCHIVE (DBGPA V2.0), http://gua.db.ukr-vo.org

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Jochen Greiner, last update: 29-Mar-2011 [Disclaimer]