Gamma-ray Burst 081210

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:20:55 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     337073,   Seg_Num: 0
GRB_RA:           70.458d {+04h 41m 50s} (J2000),
                  70.563d {+04h 42m 15s} (current),
                  69.870d {+04h 39m 29s} (1950)
GRB_DEC:         -11.266d {-11d 15' 55"} (J2000),
                 -11.249d {-11d 14' 55"} (current),
                 -11.360d {-11d 21' 35"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       11053 [cnts]    Image_Peak=331 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   262     E_range: 25-100 keV
BKG_INTEN:       111469 [cnts]
BKG_TIME:        73140.67 SOD {20:19:00.67} UT
BKG_DUR:         24 [sec]
GRB_DATE:        14810 TJD;   345 DOY;   08/12/10
GRB_TIME:        73174.21 SOD {20:19:34.21} UT
GRB_PHI:          28.59 [deg]
GRB_THETA:        14.50 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.67 [sigma]
IMAGE_SIGNIF:    8.20 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2 +13  +0  +0 +81  +0 
SUN_POSTN:       258.21d {+17h 12m 51s}  -23.00d {-22d 59' 42"}
SUN_DIST:        144.95 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.22d {+03h 16m 53s}  +23.30d {+23d 17' 52"}
MOON_DIST:        40.37 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.39,-33.83 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       66.93,-33.15 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This Notice was delayed by more than 60 sec past the end of the trigger integration interval;  
COMMENTS:        probably due to it occurring during a Malindi downlink session.  
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 = 12.73,-7.53 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:21:41 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     337073,   Seg_Num: 0
GRB_RA:           70.4853d {+04h 41m 56.47s} (J2000),
                  70.5905d {+04h 42m 21.73s} (current),
                  69.8971d {+04h 39m 35.31s} (1950)
GRB_DEC:         -11.2568d {-11d 15' 24.4"} (J2000),
                 -11.2402d {-11d 14' 24.7"} (current),
                 -11.3511d {-11d 21' 04.1"} (1950)
GRB_ERROR:       5.4 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.35e-09 [erg/cm2/sec]
GRB_SIGNIF:      6.55 [sigma]
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73246.15 SOD {20:20:46.15} UT,   71.9 [sec] since BAT Trigger Time
TAM[0-3]:        327.63 237.25 261.40 243.62
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       258.21d {+17h 12m 51s}  -23.00d {-22d 59' 42"}
SUN_DIST:        144.96 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.23d {+03h 16m 55s}  +23.30d {+23d 17' 59"}
MOON_DIST:        40.37 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.81 [deg] galactic lon,lat of the burst
ECL_COORDS:       66.96,-33.15 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 1.69 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:22:00 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     337073,   Seg_Num: 0
GRB_RA:           70.4853d {+04h 41m 56.4s} (J2000),
                  70.5905d {+04h 42m 21.7s} (current),
                  69.8971d {+04h 39m 35.3s} (1950)
GRB_DEC:         -11.2568d {-11d 15' 24.4"} (J2000),
                 -11.2402d {-11d 14' 24.7"} (current),
                 -11.3511d {-11d 21' 04.1"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       43 [cnts]
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73246.15 SOD {20:20:46.15} UT,   71.9 [sec] since BAT Trigger Time
CENTROID_X:      324.07,  raw= 324  [pixels]
CENTROID_Y:      329.44,  raw= 329  [pixels]
ROLL:            192.47 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   74.12
GRB_POS_XRT_Z:   51.33
IMAGE_URL:       sw00337073000msxps_rw.img
SUN_POSTN:       258.21d {+17h 12m 51s}  -23.00d {-22d 59' 42"}
SUN_DIST:        144.96 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.23d {+03h 16m 55s}  +23.30d {+23d 18' 02"}
MOON_DIST:        40.37 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.81 [deg] galactic lon,lat of the burst
ECL_COORDS:       66.96,-33.15 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:21:52 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     337073,   Seg_Num: 0
GRB_RA:           70.4853d {+04h 41m 56.4s} (J2000),
                  70.5905d {+04h 42m 21.7s} (current),
                  69.8971d {+04h 39m 35.3s} (1950)
GRB_DEC:         -11.2568d {-11d 15' 24.4"} (J2000),
                 -11.2402d {-11d 14' 24.7"} (current),
                 -11.3511d {-11d 21' 04.1"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       43 [cnts]
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73246.15 SOD {20:20:46.15} UT,   71.9 [sec] since BAT Trigger Time
CENTROID_X:      324.07,  raw= 324  [pixels]
CENTROID_Y:      329.44,  raw= 329  [pixels]
ROLL:            192.47 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   74.12
GRB_POS_XRT_Z:   51.33
IMAGE_URL:       sw00337073000msxps_rw.img
SUN_POSTN:       258.21d {+17h 12m 51s}  -23.00d {-22d 59' 42"}
SUN_DIST:        144.96 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.23d {+03h 16m 55s}  +23.30d {+23d 18' 01"}
MOON_DIST:        40.37 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.81 [deg] galactic lon,lat of the burst
ECL_COORDS:       66.96,-33.15 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:23:19 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     337073,   Seg_Num: 0
GRB_RA:           70.458d {+04h 41m 50s} (J2000),
                  70.563d {+04h 42m 15s} (current),
                  69.870d {+04h 39m 29s} (1950)
GRB_DEC:         -11.266d {-11d 15' 55"} (J2000),
                 -11.249d {-11d 14' 55"} (current),
                 -11.360d {-11d 21' 35"} (1950)
GRB_DATE:        14810 TJD;   345 DOY;   08/12/10
GRB_TIME:        73174.21 SOD {20:19:34.21} UT
TRIGGER_INDEX:   262
GRB_PHI:          28.59 [deg]
GRB_THETA:        14.50 [deg]
DELTA_TIME:      6.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.67 [sigma]
IMAGE_SIGNIF:    8.20 [sigma]
LC_URL:          sw00337073000msb.lc
SUN_POSTN:       258.21d {+17h 12m 52s}  -23.00d {-22d 59' 42"}
SUN_DIST:        144.95 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.25d {+03h 16m 59s}  +23.30d {+23d 18' 14"}
MOON_DIST:        40.36 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.39,-33.83 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       66.93,-33.15 [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 = 12.73,-7.53 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:23:52 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.461d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.266d {-11d 15' 57"} (J2000)
POINT_ROLL:      192.475d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73254.51 SOD {20:20:54.51} UT,   80.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.135
N_STARS:         35
X_OFFSET:        488 [pixels]
Y_OFFSET:        584 [pixels]
X_MAX:           1447 [pixels]
Y_MAX:           1543 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00337073000msufc0080.fits
SUN_POSTN:       258.22d {+17h 12m 52s}  -23.00d {-22d 59' 42"}
SUN_DIST:        144.95 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.25d {+03h 17m 00s}  +23.31d {+23d 18' 18"}
MOON_DIST:        40.36 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.39,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.93,-33.15 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:24:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.461d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.266d {-11d 15' 57"} (J2000)
POINT_ROLL:      192.475d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73254.51 SOD {20:20:54.51} UT,   80.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.135
N_STARS:         35
X_OFFSET:        488 [pixels]
Y_OFFSET:        584 [pixels]
X_MAX:           1447 [pixels]
Y_MAX:           1543 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00337073000msufc0080.fits
SUN_POSTN:       258.22d {+17h 12m 52s}  -23.00d {-22d 59' 43"}
SUN_DIST:        144.95 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.26d {+03h 17m 02s}  +23.31d {+23d 18' 24"}
MOON_DIST:        40.36 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.39,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.93,-33.15 [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:     Wed 10 Dec 08 20:25:12 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.461d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.266d {-11d 15' 57"} (J2000)
ROLL:            192.475d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73254.51 SOD {20:20:54.51} UT,   80.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     250633257
X_OFFSET:        634 [pixels]
Y_OFFSET:        806 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       794
Y_GRB_POS:       966
BINNING_INDEX:   1
IM_URL:          sw00337073000msuni0080.fits
SUN_POSTN:       258.22d {+17h 12m 52s}  -23.00d {-22d 59' 43"}
SUN_DIST:        144.95 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.27d {+03h 17m 04s}  +23.31d {+23d 18' 30"}
MOON_DIST:        40.36 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.39,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.93,-33.15 [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:     Wed 10 Dec 08 20:25:39 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.461d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.266d {-11d 15' 57"} (J2000)
ROLL:            192.475d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73254.51 SOD {20:20:54.51} UT,   80.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     250633257
X_OFFSET:        634 [pixels]
Y_OFFSET:        806 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       794
Y_GRB_POS:       966
BINNING_INDEX:   1
IM_URL:          sw00337073000msuni0080.fits
SUN_POSTN:       258.22d {+17h 12m 52s}  -23.00d {-22d 59' 43"}
SUN_DIST:        144.95 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.27d {+03h 17m 05s}  +23.31d {+23d 18' 34"}
MOON_DIST:        40.36 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.39,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.93,-33.15 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:31:05 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.463d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.267d {-11d 16' 02"} (J2000)
POINT_ROLL:      192.474d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73466.56 SOD {20:24:26.56} UT,   292.3 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.638
N_STARS:         14
X_OFFSET:        314 [pixels]
Y_OFFSET:        486 [pixels]
X_MAX:           1273 [pixels]
Y_MAX:           1445 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00337073000msufc0292.fits
SUN_POSTN:       258.22d {+17h 12m 53s}  -23.00d {-22d 59' 44"}
SUN_DIST:        144.94 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.33d {+03h 17m 19s}  +23.32d {+23d 19' 23"}
MOON_DIST:        40.34 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.94,-33.16 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:31:35 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.463d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.267d {-11d 16' 02"} (J2000)
POINT_ROLL:      192.474d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73466.56 SOD {20:24:26.56} UT,   292.3 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.638
N_STARS:         14
X_OFFSET:        314 [pixels]
Y_OFFSET:        486 [pixels]
X_MAX:           1273 [pixels]
Y_MAX:           1445 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00337073000msufc0292.fits
SUN_POSTN:       258.22d {+17h 12m 53s}  -23.00d {-22d 59' 44"}
SUN_DIST:        144.94 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.34d {+03h 17m 21s}  +23.32d {+23d 19' 28"}
MOON_DIST:        40.34 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.94,-33.16 [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:     Wed 10 Dec 08 20:31:54 UT
NOTICE_TYPE:     Swift-UVOT Position
TRIGGER_NUM:     337073,   Seg_Num: 0
GRB_RA:           70.4842d {+04h 41m 56.20s} (J2000),
                  70.5894d {+04h 42m 21.46s} (current),
                  69.8960d {+04h 39m 35.04s} (1950)
GRB_DEC:         -11.2574d {-11d 15' 26.6"} (J2000),
                 -11.2408d {-11d 14' 26.9"} (current),
                 -11.3518d {-11d 21' 06.3"} (1950)
GRB_ERROR:       0.6 [arcsec radius, statistical only]
GRB_MAG:         19.12 +/- 0.14 [mag]
FILTER:          10, White
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73256.00 SOD {20:20:56.00} UT,   81.8 [sec] since BAT Trigger Time
SUN_POSTN:       258.22d {+17h 12m 53s}  -23.00d {-22d 59' 44"}
SUN_DIST:        144.96 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.34d {+03h 17m 21s}  +23.33d {+23d 19' 30"}
MOON_DIST:        40.34 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.81 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       66.96,-33.15 [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 4.3 arcsec from the XRT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:32:59 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.463d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.267d {-11d 16' 02"} (J2000)
ROLL:            192.474d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73466.56 SOD {20:24:26.56} UT,   292.3 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     250633469
X_OFFSET:        634 [pixels]
Y_OFFSET:        806 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       794
Y_GRB_POS:       966
BINNING_INDEX:   1
IM_URL:          sw00337073000msuni0292.fits
SUN_POSTN:       258.22d {+17h 12m 53s}  -23.00d {-22d 59' 44"}
SUN_DIST:        144.94 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.35d {+03h 17m 24s}  +23.33d {+23d 19' 40"}
MOON_DIST:        40.33 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.94,-33.16 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:32:30 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.463d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.267d {-11d 16' 02"} (J2000)
ROLL:            192.474d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73466.56 SOD {20:24:26.56} UT,   292.3 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     250633469
X_OFFSET:        634 [pixels]
Y_OFFSET:        806 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       794
Y_GRB_POS:       966
BINNING_INDEX:   1
IM_URL:          sw00337073000msuni0292.fits
SUN_POSTN:       258.22d {+17h 12m 53s}  -23.00d {-22d 59' 44"}
SUN_DIST:        144.94 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.35d {+03h 17m 23s}  +23.33d {+23d 19' 36"}
MOON_DIST:        40.33 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.94,-33.16 [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:     Wed 10 Dec 08 20:38:31 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.463d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.267d {-11d 16' 01"} (J2000)
POINT_ROLL:      192.474d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  74045.69 SOD {20:34:05.69} UT,   871.5 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.947
N_STARS:         145
X_OFFSET:        74 [pixels]
Y_OFFSET:        246 [pixels]
X_MAX:           1513 [pixels]
Y_MAX:           1685 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00337073000msufc0871.fits
SUN_POSTN:       258.23d {+17h 12m 54s}  -23.00d {-22d 59' 45"}
SUN_DIST:        144.94 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.41d {+03h 17m 39s}  +23.34d {+23d 20' 30"}
MOON_DIST:        40.31 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.94,-33.16 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:38:55 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.463d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.267d {-11d 16' 01"} (J2000)
POINT_ROLL:      192.474d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  74045.69 SOD {20:34:05.69} UT,   871.5 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.947
N_STARS:         145
X_OFFSET:        74 [pixels]
Y_OFFSET:        246 [pixels]
X_MAX:           1513 [pixels]
Y_MAX:           1685 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00337073000msufc0871.fits
SUN_POSTN:       258.23d {+17h 12m 54s}  -23.00d {-22d 59' 45"}
SUN_DIST:        144.94 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.42d {+03h 17m 40s}  +23.34d {+23d 20' 33"}
MOON_DIST:        40.31 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.94,-33.16 [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:     Wed 10 Dec 08 20:39:47 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.463d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.267d {-11d 16' 01"} (J2000)
ROLL:            192.474d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  74045.69 SOD {20:34:05.69} UT,   871.5 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     250634049
X_OFFSET:        633 [pixels]
Y_OFFSET:        805 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       793
Y_GRB_POS:       965
BINNING_INDEX:   1
IM_URL:          sw00337073000msuni0871.fits
SUN_POSTN:       258.23d {+17h 12m 55s}  -23.00d {-22d 59' 46"}
SUN_DIST:        144.94 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.43d {+03h 17m 42s}  +23.34d {+23d 20' 41"}
MOON_DIST:        40.31 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.94,-33.16 [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:     Wed 10 Dec 08 20:40:05 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     337073,   Seg_Num: 0
GRB_RA:           70.4843d {+04h 41m 56.23s} (J2000),
                  70.5895d {+04h 42m 21.49s} (current),
                  69.8961d {+04h 39m 35.07s} (1950)
GRB_DEC:         -11.2579d {-11d 15' 28.4"} (J2000),
                 -11.2413d {-11d 14' 28.7"} (current),
                 -11.3523d {-11d 21' 08.1"} (1950)
GRB_ERROR:       2.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  73641.00 SOD {20:27:21.00} UT,   466.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       258.23d {+17h 12m 55s}  -23.00d {-22d 59' 46"}
SUN_DIST:        144.95 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.43d {+03h 17m 43s}  +23.35d {+23d 20' 44"}
MOON_DIST:        40.31 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.81 [deg] galactic lon,lat of the burst
ECL_COORDS:       66.96,-33.15 [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

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 10 Dec 08 20:40:04 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     337073,   Seg_Num: 0
POINT_RA:         70.463d {+04h 41m 51s} (J2000)
POINT_DEC:       -11.267d {-11d 16' 01"} (J2000)
ROLL:            192.474d
IMG_START_DATE:  14810 TJD;   345 DOY;   08/12/10
IMG_START_TIME:  74045.69 SOD {20:34:05.69} UT,   871.5 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     250634049
X_OFFSET:        633 [pixels]
Y_OFFSET:        805 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       793
Y_GRB_POS:       965
BINNING_INDEX:   1
IM_URL:          sw00337073000msuni0871.fits
SUN_POSTN:       258.23d {+17h 12m 55s}  -23.00d {-22d 59' 46"}
SUN_DIST:        144.94 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:       49.43d {+03h 17m 43s}  +23.35d {+23d 20' 43"}
MOON_DIST:        40.31 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      208.40,-33.83 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       66.94,-33.16 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #8648
H. A. Krimm (CRESST/GSFC/USRA), A. P. Beardmore (U Leicester), P. J. Brown (PSU), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), P. A. Evans (U Leicester), C. Guidorzi (UniFE), S. T. Holland (CRESST/USRA/GSFC), S. D. Hunsberger (PSU), S. Immler (CRESST/GSFC/UMD), J. A. Kennea (PSU), W.B Landsman (GSFC), F. E. Marshall (NASA/GSFC), J. P. Osborne (U Leicester), C. Pagani (PSU), D. M. Palmer (LANL), A. M. Parsons (GSFC), M. Stamatikos (NASA/ORAU) and E. Troja (INAF-IASFPA) report on behalf of the Swift Team:
At 20:19:34 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 081210 (trigger=337073). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 70.458, -11.266 which is
```
   RA(J2000) = 04h 41m 50s
   Dec(J2000) = -11d 15' 55"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a double-peaked structure with a duration of about 30 sec, followed by an additional peak at T+140 s. The peak count rate was ~5000 counts/sec (15-350 keV), at ~18 sec after the trigger.
The XRT began observing the field at 20:20:46.1 UT, 71.9 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 70.4853, -11.2568 which is equivalent to:
```
   RA(J2000)  = 04h 41m 56.47s
   Dec(J2000) = -11d 15' 24.4"
```
with an uncertainty of 5.4 arcseconds (radius, 90% containment). This location is 101 arcseconds from the BAT onboard position, within the BAT error circle. The full field-of-view light curve shows a strong flare at T+140 s, coincident with a flare seen in the BAT. No event data are yet available to determine the column density using X-ray spectroscopy.
The initial flux in the 2.5 s image was 1.35e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 80 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at
```
  RA(J2000)  =	04:41:56.20 = 70.48417
  DEC(J2000) = -11:15:26.7  = -11.25741
```
with a 90%-confidence error radius of about 0.64 arc sec. This position is 4.6 arc sec. from the center of the XRT error circle. The estimated magnitude is 19.12 with a 1-sigma error of about 0.15. No correction has been made for the expected extinction corresponding to E(B-V) of 0.08. The afterglow is detected in the UVOT u filter, so the redshift must be less than approximately 3.3.
Burst Advocate for this burst is H. A. Krimm (krimm AT milkyway.gsfc.nasa.gov). 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 Circular #8649
S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), A. M. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-240 to T+651 sec from recent telemetry downlinks, we report further analysis of BAT GRB 081210 (trigger #337073) (Krimm, et al., GCN Circ. 8648). The BAT ground-calculated position is RA, Dec = 70.485, -11.263 deg, which is
```
   RA(J2000)  =  04h 41m 56.5s 
   Dec(J2000) = -11d 15' 46.0" 
```
with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 96%.
The mask-weighted light curve shows several peaks. The first starts at ~T-30 sec. The second and brightest peaks at ~T+18 sec. The third peaks at T+135 sec. There is possible forth peak at T+180 sec. T90 (15-350 keV) is 146 +- 8 sec (estimated error including systematics).
The time-averaged spectrum from T-12.9 to T+143.0 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.42 +- 0.14. The fluence in the 15-150 keV band is 1.8 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+17.97 sec in the 15-150 keV band is 2.5 +- 0.2 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/337073/BA/
GCN Circular #8650
J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
Using 2098 s of XRT Photon Counting mode data and 1 UVOT images for GRB 081210, 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 = 70.4841, -11.2577 which is equivalent to:
```
RA (J2000): 04h 41m 56.19s
Dec (J2000): -11d 15' 27.8"
```
with an uncertainty of 1.7 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 http://www.swift.ac.uk/xrt_positions/Goad.pdf), the current algorithm is an extension of this method.
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #8652
P.A. Evans, K.L. Page (U. Leicester) and H.A. Krimm (CRESST/GSFC/USRA) report on behalf of the Swift-XRT team:
We have analysed 4.9 ks of XRT data for GRB 081210 (Krimm et al., GCN Circ. 8648), beginning 78 s after the BAT trigger. The first 387 s were obtained in Windowed Timing (WT) mode and the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN Circ 8650).
The light curve shows an initial period of flaring activity. A strong peak is seen at T+138 s coincident with the third peak seen by the BAT (Barthelmy et al. GCN Circ. 8649). Further peaks are seen at T+219 s, 317 s and 391 s. During this time the underlying light curve, while difficult to constrain, is clearly decaying, with a power-law index of around 1.5. Around T+5000 s the decay flattens, to a slope of 0.74 (+/-0.24).
A spectrum formed from the PC mode data, i.e. after the flaring activity has ceased, can be fitted with an absorbed power-law with a photon index of 1.91 (+/-0.12). The best-fitting absorption column is 6.1 (+2.5, -1.5) x 10^20 cm^-2, consistent with the Galactic value in the direction of the burst (4.6 x 10^20 cm^-2, Kalberla et al. 2005). The counts to observed 0.3-10 keV flux conversion factor deduced from this spectrum is 4.2 x 10^-11 erg cm^-2 count^-1.
If the light curve continues to decay with a power-law decay index of 0.74, the count rate at T+24 hours will be 0.017 count s^-1, corresponding to an observed (unabsorbed) flux of 6.73 x 10^-13 (8.02 x 10 ^-13) erg cm^-2 s^-1.
The results of the xrt automatic analysis are available at http://www.swift.ac.uk/xrt_products/00337073.
This circular is an official product of the Swift-XRT team.
GCN Circular #8654
S. Immler (CRESST/UMD/GSFC), S. T. Holland (CRESST/USRA/GSFC), and H. A. Krimm (CRESST/GSFC/USRA) report on behalf of the Swift UVOT team:
Further analysis of Swift Ultraviolet/Optical Telescope (UVOT) data of GRB 081210 (Krimm et al., GCN Circ. 8648), starting 80 sec after the BAT trigger, gives a detection of an optical source consistent with the enhanced XRT position (Osborne et al., GCN Circ 8650) in the white and u filters at 12.6-sigma and 3.8-sigma levels of confidence, respectively. The source is not detected in any of the other UVOT filters at the limiting magnitudes reported below.
```
Filter Tstart(s) Tstop(s)  Exp(s)  Magnitude

wh      80       1009     318      19.91+/-0.08
u      292        716     265      20.15+/-0.29
b      548        741      39      >19.78  (3-sigma UL)
uvw2   598       5251     235      >20.47  (3-sigma UL)
v      622        816     244      >19.99  (3-sigma UL)
uvm2   647        840     136      >19.55  (3-sigma UL)
uvw1   672        866      39      >18.74  (3-sigma UL)
```
The values quoted above are in the UVOT photometric system (Poole et al. 2008, MNRAS, 383, 627) and are not corrected for the expected Galactic extinction along the line of sight which corresponds to a reddening of E(B-V) = 0.077 mag (Schlegel et al. 1998).
The event data in the white filter shows a flare peaking at approximately 130 s after the BAT trigger, which approximately coincides with the flare seen in the X-ray light curve (Evans et al., GCN Circ 8652).
GCN Circular #8659
B. E. Cobb (UC Berkeley) reports:
Using the ANDICAM instrument on the 1.3m telescope at CTIO, we obtained optical/IR imaging of the error region of GRB 081210 (Krimm et al. GCN 8648) with a mid-exposure time of ~6.2 hours post-burst (2008-12-11 02:33 UT). Total summed exposure times amounted to 36 minutes in I and 30 minutes in J.
The GRB's optical afterglow (Krimm et al. GCN 8648) is not detected to an approximate limiting magnitude of I>22.3 and J>20.0. (Optical photometry is calibrated against Landolt standard stars and IR photometry is calibrated against 2MASS stars in the field.)
GCN Circular #8660
X.F. Wang, L.P. Xin, Y.L. Qiu, J.Y. Wei, j. Wang, J.Y. Hu, J.S. Deng, W.K. Zheng on behalf of EAFON report:
We have observed GRB081210 (Krimm et al, GCN 8648) with Xinglong TNT telescope from Dec.11th,13:38:47(UT), 17.33 hr after the burst. After combined 6*600s R band images, no afterglow was detected with the 3 sigma upper limits of 19.571, at the mean time of 17.814 hr after the burst.
This message may be cited.
For more information about Xinglong GRBs Follow-up observations, please visit the website: http://www.xinglong-naoc.org/grb/
GCN Circular #8667
V. Rumyantsev (CrAO), A. Pozanenko (IKI) on behalf of larger GRB follow up collaboration report:
We observed the error box of Swift GRB 081210 (Krimm et al, GCN 8648) in R band on Dec. 10 between (UT) 22:31:15 - 23:05:19 with Shajn telescope of CrAO. Inside the enhanced XRT error box (Osborne et al. GCN 8650) we do not detect optical afterglow (Krimm et al, GCN 8648). A photometry based on 0787-0047183 USNO B1.0 star (04:41:55.26 -11:14:39.0) assuming R2=16.33 is following:
```
T0+    Filter,  Exp.,     UL
(h)             (s)       (3 sigma)

2.487  R        29x60     >20.0 
```
GCN Report 186.1
GCN_Report 186.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_186_1.pdf by H.A. Krimm at CRESST/GSFC/USRA titled: "Final Swift observations of GRB 081210"
arXiv:1504.02482 X-shooter redshift of host: 2.0631

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Jochen Greiner, last update: 07-Jul-2015 [Disclaimer]