Gamma-ray Burst 090111

(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:     Sun 11 Jan 09 23:58:45 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     339696,   Seg_Num: 0
GRB_RA:          251.645d {+16h 46m 35s} (J2000),
                 251.761d {+16h 47m 03s} (current),
                 251.005d {+16h 44m 01s} (1950)
GRB_DEC:          +0.091d {+00d 05' 28"} (J2000),
                  +0.075d {+00d 04' 31"} (current),
                  +0.180d {+00d 10' 49"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5062 [cnts]    Image_Peak=191 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   137     E_range: 15-50 keV
BKG_INTEN:       33928 [cnts]
BKG_TIME:        86283.59 SOD {23:58:03.59} UT
BKG_DUR:         8 [sec]
GRB_DATE:        14842 TJD;    11 DOY;   09/01/11
GRB_TIME:        86301.70 SOD {23:58:21.70} UT
GRB_PHI:         -140.06 [deg]
GRB_THETA:        25.11 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.24 [sigma]
IMAGE_SIGNIF:    7.11 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +1  +0  +0  +0 -68  +0 
SUN_POSTN:       293.67d {+19h 34m 40s}  -21.66d {-21d 39' 20"}
SUN_DIST:         46.27 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.36d {+08h 25m 26s}  +19.77d {+19d 46' 24"}
MOON_DIST:       123.01 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.51 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      250.11, 22.27 [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 = 103.78,7.86 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:00:20 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     339696,   Seg_Num: 0
GRB_RA:          251.6738d {+16h 46m 41.7s} (J2000),
                 251.7895d {+16h 47m 09.4s} (current),
                 251.0338d {+16h 44m 08.1s} (1950)
GRB_DEC:          +0.0773d {+00d 04' 38.2"} (J2000),
                  +0.0615d {+00d 03' 41.5"} (current),
                  +0.1663d {+00d 09' 58.7"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       132 [cnts]
IMG_START_DATE:  14842 TJD;    11 DOY;   09/01/11
IMG_START_TIME:  86378.28 SOD {23:59:38.28} UT,   76.6 [sec] since BAT Trigger Time
CENTROID_X:      236.63,  raw= 237  [pixels]
CENTROID_Y:      306.95,  raw= 307  [pixels]
ROLL:            120.76 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   21.11
GRB_POS_XRT_Z:   -154.78
IMAGE_URL:       sw00339696000msxps_rw.img
SUN_POSTN:       293.67d {+19h 34m 40s}  -21.66d {-21d 39' 19"}
SUN_DIST:         46.24 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.37d {+08h 25m 30s}  +19.77d {+19d 46' 05"}
MOON_DIST:       123.02 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.58, 27.48 [deg] galactic lon,lat of the burst
ECL_COORDS:      250.14, 22.26 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:00:26 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     339696,   Seg_Num: 0
GRB_RA:          251.6738d {+16h 46m 41.7s} (J2000),
                 251.7895d {+16h 47m 09.4s} (current),
                 251.0338d {+16h 44m 08.1s} (1950)
GRB_DEC:          +0.0773d {+00d 04' 38.2"} (J2000),
                  +0.0615d {+00d 03' 41.5"} (current),
                  +0.1663d {+00d 09' 58.7"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       132 [cnts]
IMG_START_DATE:  14842 TJD;    11 DOY;   09/01/11
IMG_START_TIME:  86378.28 SOD {23:59:38.28} UT,   76.6 [sec] since BAT Trigger Time
CENTROID_X:      236.63,  raw= 237  [pixels]
CENTROID_Y:      306.95,  raw= 307  [pixels]
ROLL:            120.76 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   21.11
GRB_POS_XRT_Z:   -154.78
IMAGE_URL:       sw00339696000msxps_rw.img
SUN_POSTN:       293.67d {+19h 34m 40s}  -21.66d {-21d 39' 19"}
SUN_DIST:         46.24 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.38d {+08h 25m 30s}  +19.77d {+19d 46' 03"}
MOON_DIST:       123.02 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.58, 27.48 [deg] galactic lon,lat of the burst
ECL_COORDS:      250.14, 22.26 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:00:11 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     339696,   Seg_Num: 0
GRB_RA:          251.6738d {+16h 46m 41.71s} (J2000),
                 251.7895d {+16h 47m 09.46s} (current),
                 251.0338d {+16h 44m 08.12s} (1950)
GRB_DEC:          +0.0773d {+00d 04' 38.2"} (J2000),
                  +0.0615d {+00d 03' 41.5"} (current),
                  +0.1663d {+00d 09' 58.7"} (1950)
GRB_ERROR:       5.0 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       3.05e-09 [erg/cm2/sec]
GRB_SIGNIF:      11.48 [sigma]
IMG_START_DATE:  14842 TJD;    11 DOY;   09/01/11
IMG_START_TIME:  86378.28 SOD {23:59:38.28} UT,   76.6 [sec] since BAT Trigger Time
TAM[0-3]:        327.62 237.24 261.26 243.74
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       293.67d {+19h 34m 40s}  -21.66d {-21d 39' 19"}
SUN_DIST:         46.24 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.37d {+08h 25m 30s}  +19.77d {+19d 46' 06"}
MOON_DIST:       123.02 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.58, 27.48 [deg] galactic lon,lat of the burst
ECL_COORDS:      250.14, 22.26 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 1.91 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:01:57 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     339696,   Seg_Num: 0
GRB_RA:          251.645d {+16h 46m 35s} (J2000),
                 251.761d {+16h 47m 03s} (current),
                 251.005d {+16h 44m 01s} (1950)
GRB_DEC:          +0.091d {+00d 05' 28"} (J2000),
                  +0.075d {+00d 04' 31"} (current),
                  +0.180d {+00d 10' 49"} (1950)
GRB_DATE:        14842 TJD;    11 DOY;   09/01/11
GRB_TIME:        86301.70 SOD {23:58:21.70} UT
TRIGGER_INDEX:   137
GRB_PHI:         -140.06 [deg]
GRB_THETA:        25.11 [deg]
DELTA_TIME:      -51.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.24 [sigma]
IMAGE_SIGNIF:    7.11 [sigma]
LC_URL:          sw00339696000msb.lc
SUN_POSTN:       293.67d {+19h 34m 41s}  -21.66d {-21d 39' 18"}
SUN_DIST:         46.28 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.39d {+08h 25m 34s}  +19.76d {+19d 45' 45"}
MOON_DIST:       122.98 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.51 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      250.11, 22.27 [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 = 103.78,7.86 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:04:34 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     339696,   Seg_Num: 0
POINT_RA:        251.634d {+16h 46m 32s} (J2000)
POINT_DEC:        +0.094d {+00d 05' 40"} (J2000)
POINT_ROLL:      120.755d
IMG_START_DATE:  14842 TJD;    11 DOY;   09/01/11
IMG_START_TIME:  86387.56 SOD {23:59:47.56} UT,   85.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.970
N_STARS:         70
X_OFFSET:        544 [pixels]
Y_OFFSET:        472 [pixels]
X_MAX:           1503 [pixels]
Y_MAX:           1431 [pixels]
DET_THRESH:      21
PHOTO_THRESH:    12
SL_URL:          sw00339696000msufc0085.fits
SUN_POSTN:       293.67d {+19h 34m 41s}  -21.66d {-21d 39' 17"}
SUN_DIST:         46.29 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.42d {+08h 25m 41s}  +19.75d {+19d 45' 14"}
MOON_DIST:       122.94 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.52 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      250.09, 22.27 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:05:09 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     339696,   Seg_Num: 0
POINT_RA:        251.634d {+16h 46m 32s} (J2000)
POINT_DEC:        +0.094d {+00d 05' 40"} (J2000)
POINT_ROLL:      120.755d
IMG_START_DATE:  14842 TJD;    11 DOY;   09/01/11
IMG_START_TIME:  86387.56 SOD {23:59:47.56} UT,   85.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.970
N_STARS:         70
X_OFFSET:        544 [pixels]
Y_OFFSET:        472 [pixels]
X_MAX:           1503 [pixels]
Y_MAX:           1431 [pixels]
DET_THRESH:      21
PHOTO_THRESH:    12
SL_URL:          sw00339696000msufc0085.fits
SUN_POSTN:       293.67d {+19h 34m 41s}  -21.66d {-21d 39' 17"}
SUN_DIST:         46.29 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.43d {+08h 25m 42s}  +19.75d {+19d 45' 07"}
MOON_DIST:       122.94 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.52 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      250.09, 22.27 [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:     Mon 12 Jan 09 00:05:57 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     339696,   Seg_Num: 0
POINT_RA:        251.634d {+16h 46m 32s} (J2000)
POINT_DEC:        +0.094d {+00d 05' 40"} (J2000)
ROLL:            120.755d
IMG_START_DATE:  14842 TJD;    11 DOY;   09/01/11
IMG_START_TIME:  86387.56 SOD {23:59:47.56} UT,   85.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     253411191
X_OFFSET:        1052 [pixels]
Y_OFFSET:        671 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1212
Y_GRB_POS:       831
BINNING_INDEX:   1
IM_URL:          sw00339696000msuni0085.fits
SUN_POSTN:       293.67d {+19h 34m 41s}  -21.65d {-21d 39' 17"}
SUN_DIST:         46.29 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.43d {+08h 25m 44s}  +19.75d {+19d 44' 57"}
MOON_DIST:       122.93 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.52 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      250.09, 22.27 [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:     Mon 12 Jan 09 00:06:25 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     339696,   Seg_Num: 0
POINT_RA:        251.634d {+16h 46m 32s} (J2000)
POINT_DEC:        +0.094d {+00d 05' 40"} (J2000)
ROLL:            120.755d
IMG_START_DATE:  14842 TJD;    11 DOY;   09/01/11
IMG_START_TIME:  86387.56 SOD {23:59:47.56} UT,   85.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     253411191
X_OFFSET:        1052 [pixels]
Y_OFFSET:        671 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1212
Y_GRB_POS:       831
BINNING_INDEX:   1
IM_URL:          sw00339696000msuni0085.fits
SUN_POSTN:       293.67d {+19h 34m 42s}  -21.65d {-21d 39' 17"}
SUN_DIST:         46.29 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.44d {+08h 25m 45s}  +19.75d {+19d 44' 52"}
MOON_DIST:       122.93 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.52 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      250.09, 22.27 [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:     Mon 12 Jan 09 00:07:06 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     339696,   Seg_Num: 0
GRB_RA:          251.6754d {+16h 46m 42.09s} (J2000),
                 251.7911d {+16h 47m 09.85s} (current),
                 251.0354d {+16h 44m 08.50s} (1950)
GRB_DEC:          +0.0776d {+00d 04' 39.3"} (J2000),
                  +0.0618d {+00d 03' 42.6"} (current),
                  +0.1666d {+00d 09' 59.7"} (1950)
GRB_ERROR:       4.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  14843 TJD;    12 DOY;   09/01/12
IMG_START_TIME:  55.00 SOD {00:00:55.00} UT,   153.3 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       293.67d {+19h 34m 42s}  -21.65d {-21d 39' 16"}
SUN_DIST:         46.25 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.45d {+08h 25m 47s}  +19.75d {+19d 44' 43"}
MOON_DIST:       122.96 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.58, 27.48 [deg] galactic lon,lat of the burst
ECL_COORDS:      250.14, 22.26 [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.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:11:07 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     339696,   Seg_Num: 0
POINT_RA:        251.632d {+16h 46m 32s} (J2000)
POINT_DEC:        +0.094d {+00d 05' 37"} (J2000)
POINT_ROLL:      120.757d
IMG_START_DATE:  14843 TJD;    12 DOY;   09/01/12
IMG_START_TIME:  199.74 SOD {00:03:19.74} UT,   298.0 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.724
N_STARS:         54
X_OFFSET:        732 [pixels]
Y_OFFSET:        351 [pixels]
X_MAX:           1691 [pixels]
Y_MAX:           1310 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00339696000msufc0298.fits
SUN_POSTN:       293.68d {+19h 34m 42s}  -21.65d {-21d 39' 15"}
SUN_DIST:         46.29 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.49d {+08h 25m 57s}  +19.73d {+19d 43' 55"}
MOON_DIST:       122.88 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.53 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      250.09, 22.27 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:11:35 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     339696,   Seg_Num: 0
POINT_RA:        251.632d {+16h 46m 32s} (J2000)
POINT_DEC:        +0.094d {+00d 05' 37"} (J2000)
POINT_ROLL:      120.757d
IMG_START_DATE:  14843 TJD;    12 DOY;   09/01/12
IMG_START_TIME:  199.74 SOD {00:03:19.74} UT,   298.0 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.724
N_STARS:         54
X_OFFSET:        732 [pixels]
Y_OFFSET:        351 [pixels]
X_MAX:           1691 [pixels]
Y_MAX:           1310 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00339696000msufc0298.fits
SUN_POSTN:       293.68d {+19h 34m 42s}  -21.65d {-21d 39' 14"}
SUN_DIST:         46.29 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.49d {+08h 25m 58s}  +19.73d {+19d 43' 49"}
MOON_DIST:       122.88 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.53 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      250.09, 22.27 [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:     Mon 12 Jan 09 00:13:59 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     431426,   Seg_Num: 192
POINT_RA:          0.000d {+00h 00m 00s} (J2000)
POINT_DEC:        +0.000d {+00d 00' 00"} (J2000)
ROLL:            0.000d
IMG_START_DATE:  58013 TJD;   43182 DOY;   09/135353777/137898200
IMG_START_TIME:  47656.07 SOD {13:14:16.07} UT,   47754.4 [sec] since BAT Trigger Time
FILTER:          0, illegal value
EXPOSURE_ID:     222300781
X_OFFSET:        1457 [pixels]
Y_OFFSET:        1024 [pixels]
WIDTH:           0 [pixels]
HEIGHT:          512 [pixels]
X_GRB_POS:       163
Y_GRB_POS:       775
BINNING_INDEX:   8
IM_URL:          sw00339696000msuni-2147483648.fits
SUN_POSTN:       293.68d {+19h 34m 43s}  -21.65d {-21d 39' 14"}
SUN_DIST:         69.86 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      126.52d {+08h 26m 04s}  +19.72d {+19d 43' 21"}
MOON_DIST:       122.29 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       96.34,-60.19 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        0.00,  0.00 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        This Notice is generated as a result of an uploaded TOO on an old GRB -- this is not a newly detected burst.  
COMMENTS:        And the IMG_START_DATE/TIME fields are the current epoch -- not the original detection.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        This notice was forced out after watchdog timer expiring -- most likely due to missing packet(s);  
COMMENTS:        as a consequence some of the fields may be incoorect (eg TRIGGER_NUM,RA,DEC).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:14:28 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     431426,   Seg_Num: 192
POINT_RA:          0.000d {+00h 00m 00s} (J2000)
POINT_DEC:        +0.000d {+00d 00' 00"} (J2000)
ROLL:            0.000d
IMG_START_DATE:  58013 TJD;   43182 DOY;   09/135353777/137898200
IMG_START_TIME:  47656.07 SOD {13:14:16.07} UT,   47754.4 [sec] since BAT Trigger Time
FILTER:          0, illegal value
EXPOSURE_ID:     222300781
X_OFFSET:        1457 [pixels]
Y_OFFSET:        1024 [pixels]
WIDTH:           0 [pixels]
HEIGHT:          512 [pixels]
X_GRB_POS:       163
Y_GRB_POS:       775
BINNING_INDEX:   8
IM_URL:          sw00339696000msuni-2147483648.fits
SUN_POSTN:       293.68d {+19h 34m 43s}  -21.65d {-21d 39' 13"}
SUN_DIST:         69.86 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      126.52d {+08h 26m 06s}  +19.72d {+19d 43' 15"}
MOON_DIST:       122.29 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       96.34,-60.19 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        0.00,  0.00 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        This Notice is generated as a result of an uploaded TOO on an old GRB -- this is not a newly detected burst.  
COMMENTS:        And the IMG_START_DATE/TIME fields are the current epoch -- not the original detection.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.  
COMMENTS:        This notice was forced out after watchdog timer expiring -- most likely due to missing packet(s);  
COMMENTS:        as a consequence some of the fields may be incoorect (eg TRIGGER_NUM,RA,DEC).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:16:37 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     339696,   Seg_Num: 0
POINT_RA:        251.632d {+16h 46m 32s} (J2000)
POINT_DEC:        +0.093d {+00d 05' 37"} (J2000)
POINT_ROLL:      120.757d
IMG_START_DATE:  14843 TJD;    12 DOY;   09/01/12
IMG_START_TIME:  777.03 SOD {00:12:57.03} UT,   875.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.451
N_STARS:         186
X_OFFSET:        492 [pixels]
Y_OFFSET:        111 [pixels]
X_MAX:           1931 [pixels]
Y_MAX:           1550 [pixels]
DET_THRESH:      22
PHOTO_THRESH:    13
SL_URL:          sw00339696000msufc0875.fits
SUN_POSTN:       293.68d {+19h 34m 43s}  -21.65d {-21d 39' 12"}
SUN_DIST:         46.30 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.55d {+08h 26m 11s}  +19.71d {+19d 42' 49"}
MOON_DIST:       122.83 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.53 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      250.09, 22.27 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:18:04 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     339696,   Seg_Num: 0
POINT_RA:        251.632d {+16h 46m 32s} (J2000)
POINT_DEC:        +0.093d {+00d 05' 37"} (J2000)
ROLL:            120.757d
IMG_START_DATE:  14843 TJD;    12 DOY;   09/01/12
IMG_START_TIME:  777.03 SOD {00:12:57.03} UT,   875.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     253411981
X_OFFSET:        1051 [pixels]
Y_OFFSET:        670 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1211
Y_GRB_POS:       830
BINNING_INDEX:   1
IM_URL:          sw00339696000msuni0875.fits
SUN_POSTN:       293.68d {+19h 34m 44s}  -21.65d {-21d 39' 12"}
SUN_DIST:         46.30 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.56d {+08h 26m 15s}  +19.71d {+19d 42' 31"}
MOON_DIST:       122.82 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.53 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      250.09, 22.27 [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:     Mon 12 Jan 09 00:18:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     339696,   Seg_Num: 0
POINT_RA:        251.632d {+16h 46m 32s} (J2000)
POINT_DEC:        +0.093d {+00d 05' 37"} (J2000)
ROLL:            120.757d
IMG_START_DATE:  14843 TJD;    12 DOY;   09/01/12
IMG_START_TIME:  777.03 SOD {00:12:57.03} UT,   875.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     253411981
X_OFFSET:        1051 [pixels]
Y_OFFSET:        670 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1211
Y_GRB_POS:       830
BINNING_INDEX:   1
IM_URL:          sw00339696000msuni0875.fits
SUN_POSTN:       293.68d {+19h 34m 44s}  -21.65d {-21d 39' 12"}
SUN_DIST:         46.30 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.57d {+08h 26m 16s}  +19.71d {+19d 42' 26"}
MOON_DIST:       122.82 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.53 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      250.09, 22.27 [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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jan 09 00:17:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     339696,   Seg_Num: 0
POINT_RA:        251.632d {+16h 46m 32s} (J2000)
POINT_DEC:        +0.093d {+00d 05' 37"} (J2000)
POINT_ROLL:      120.757d
IMG_START_DATE:  14843 TJD;    12 DOY;   09/01/12
IMG_START_TIME:  777.03 SOD {00:12:57.03} UT,   875.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.451
N_STARS:         186
X_OFFSET:        492 [pixels]
Y_OFFSET:        111 [pixels]
X_MAX:           1931 [pixels]
Y_MAX:           1550 [pixels]
DET_THRESH:      22
PHOTO_THRESH:    13
SL_URL:          sw00339696000msufc0875.fits
SUN_POSTN:       293.68d {+19h 34m 44s}  -21.65d {-21d 39' 12"}
SUN_DIST:         46.30 [deg]   Sun_angle= 2.8 [hr] (West of Sun)
MOON_POSTN:      126.56d {+08h 26m 13s}  +19.71d {+19d 42' 38"}
MOON_DIST:       122.83 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       17.57, 27.53 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      250.09, 22.27 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN Circular #8795
T. Sakamoto (NASA/UMBC), M. M. Chester (PSU), E. A. Hoversten (PSU), H. A. Krimm (CRESST/GSFC/USRA), J. Mao (INAF-OAB), R. Margutti (Univ Bicocca&OAB), F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL), M. Stamatikos (NASA/ORAU), T. N. Ukwatta (GSFC/GWU) and L. Vetere (PSU) report on behalf of the Swift Team:
At 23:58:21 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 090111 (trigger=339696). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 251.645, +0.091 which is
```
   RA(J2000) = 16h 46m 35s
   Dec(J2000) = +00d 05' 28"
```
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. The peak count rate was ~1200 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began observing the field at 23:59:38.3 UT, 76.6 seconds after the BAT trigger. Using promptly downlinked data we find a bright, variable, uncatalogued X-ray source with an enhanced position: RA, Dec 251.6759, 0.0769 which is equivalent to:
```
   RA(J2000)  = 16h 46m 42.21s
   Dec(J2000) = +00d 04' 36.8"
```
with an uncertainty of 3.0 arcseconds (radius, 90% containment). This location is 122 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 6.45e+20 cm^-2 (Kalberla et al. 2005).
The initial flux in the 2.5 s image was 3.05e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 86 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The 3-sigma upper limit at the location of the XRT candidate is 19.3 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.16.
Burst Advocate for this burst is T. Sakamoto (Taka.Sakamoto AT 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 #8796
P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team.
Using 1667 s of XRT Photon Counting mode data and 2 UVOT images for GRB 090111, 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 = 251.67557, +0.07728 which is equivalent to:
```
RA (J2000): 16h 46m 42.14s
Dec (J2000): +00d 04' 38.2"
```
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 #8797
R. Margutti (Univ. Bicocca & INAF-OAB), J. Mao (INAF-OAB), T. Sakamoto (NASA/UMBC) report on behalf of the Swift XRT team:
We have analysed the first 2 orbits of Swift-XRT data obtained for GRB 090111 (Sakamoto et al., GCN Circ. 8795), covering 70 s of Windowed Timing (WT) and 4 ks of Photon Counting (PC) mode data, respectively, between 77 s and 8 ks after the trigger. The UVOT-enhanced XRT position was given by Evans et al. in GCN Circ. 8796.
In the time interval 77-150 s, the light curve can be modelled by a simple power law with a decay index alpha_1= 5.1 +/- 0.3 (90% confidence) followed by a rebrightening around 0.5 ks. After the rebrightnening the light curve decays with a powerlaw index alpha_2= 3.6 +/- 0.4 and then flattens to alpha_3= 0.4 +/- 0.1 with a t_break of 1200 s.
The spectrum extracted from WT data can be modelled with an absorbed simple power-law, with Gamma = 5.4 +/- 0.5 and NH = (5.4 +/- 0.8)x10^21 cm^-2 in excess of the Galactic column in this direction which is 6.5x10^20 cm^-2 (Kalberla et al. 2005). The observed (unabsorbed) 0.3 -10 keV flux over this time interval (77-150 s post-trigger) is 3.8x10^-10 (2.7x10^-8) erg cm^-2 s^-1.
The spectrum extracted from PC data in the time interval 150-8000 s can be modelled with an absorbed power-law, with Gamma= 3.3 +/- 0.5 and an intrinsic column density of NH = (2.0 +/- 0.8)x10^21 cm^-2. The observed (unabsorbed) 0.3 -10 keV flux over this time interval is 3.0x10^-12 (1.2x10^-11) erg cm^-2 s^-1. Uncertainties are given at 90% confidence.
If the light-curve continues to decay with alpha ~0.4, the count rate 24 hours after the burst is estimated to be 1.3x10^-2 count s^-1, which corresponds to an observed flux of 4x10^-13 erg cm^-2 s^-1.
The results of the xrt automatic analysis are available at http://www.swift.ac.uk/xrt_products/00339696.
This is an official product of the Swift-XRT team.
GCN Circular #8799
E. A. Hoversten (PSU) and T. Sakamoto (NASA/UMBC) report on behalf of the Swift UVOT team:
The Swift/UVOT began settled observations of the field of GRB 090111 86s after the BAT trigger (Godet et al., GCN 8795). We do not detect any source at the enhanced Swift XRT position (Evans et al. GCN 8796). UVOT magnitude 3-sigma upper limits are reported in the following table:
```
Filter   T_start   T_stop   Exp(s)  Mag (3-sigma upper limit)
-------------------------------------------------------------
WHITE       86       235     146       > 20.25
WHITE       86      1545     391       > 20.78
v          627      1768     136       > 18.47
b          553      1866     136       > 19.37
u          298       547     245       > 19.56
u          298      1841     608       > 20.03
uvw1       676      1817     136       > 19.22
uvw2       603      1743     136       > 19.52
```
The quoted upper limits have not been corrected for the expected Galactic extinction along the line of sight of E_(B-V) = 0.16 mag. All photometry is on the UVOT photometric system described in Poole et al. (2008, MNRAS, 383, 627).
GCN Circular #8800
M. Stamatikos (GSFC/ORAU), 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), K. McLean (GSFC/UMD), D. M. Palmer (LANL), A. M. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), J. Tueller (GSFC), T. N. Ukwatta (GWU) (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 090111 (trigger #339696) (Sakamoto et al., GCN Circ. 8795). The BAT ground-calculated position is RA, Dec = 251.656, 0.067 deg which is
```
   RA(J2000)  =  16h 46m 37.4s
   Dec(J2000) = +00d 04' 01.5"
```
with an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 82%.
The mask-weighted light curve shows two peaks of roughly equal intensity. The first lasts from T-3 sec to T+9 sec and the second from T+10 to T+26 seconds. T90 (15-350 keV) is 24.8 +- 2.7 sec (estimated error including systematics).
The time-averaged spectrum from T-2.9 to T+25.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.37 +- 0.17. The fluence in the 15-150 keV band is 6.2 +- 0.6 x 10-7 erg/cm2. The 1-sec peak photon flux measured from T+10.70 sec in the 15-150 keV band is 0.9 +- 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/339696/BA/
GCN Circular #11385
GRB 090111, the review of the sky area in plate archives (1976-1996)
V.V. Golovnya, L.N. Kizyun (Main Astronomical Observatory, Kyiv) report:
We have undertaken the review of the sky area of GRB 090111 (Evans et al., GCN 8796) on astronegatives, collected in Ukrainian NAS Main astronomical observatory plate archive (1976-1996)[1,2,3]. 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       GUA_ID          Exp. LimMag  Star
   19790419 22:37:48 GUA040C001160B   5   14.4    USNO A2 0900-08951386
   19790503 23:54:51 GUA040C001168B   6   14.4    USNO A2 0900-08951386
   19790503 23:54:51 GUA040D001169    6   14.65   USNO A2 0900-08945162
   19800515 23:06:42 GUA040D001747   20   14.4    USNO A2 0900-08951386
   19800515 23:06:34 GUA040C001746B  20   14.65   USNO A2 0900-08945162
   19810521 22:48:36 GUA040D001952    3   11.63   TYC 384-480-1
   19820515 22:46:59 GUA040C000082A  27   16.35   USNO A2 0900-08949620
   19910613 21:25:17 GUA040C001800A  22.5 17.3    USNO A2 0900-08949717
```
GUA ID - Double Wide-angle Astrograph (D/F=40/2000, M=103"/mm) of the Ukrainian NAS Main astronomical observatory in Kyiv (Marsden's number - 83) the plate number[4]. Exp. - Duration of the maximum exposures (minutes). LimMag - Limited mag, derived in the 15 minutes area around the location given in Evans et al., GCN 8796 Star - Comparison star.
The preview images can be found http://gua.db.ukr-vo.org/img/grb/090111/index.html. The images with full resolution are available via e-mail on demand.
References:
1. L.Pakulyak , N.Kharchenko, E.Izhakevich, V.Golovnya, V.Kisljuk, V.Andruk. Data base of photographic observations of celestial bodies of Golosiiv observatory. Baltic Astron. 6, 1997.
2. L.Pakulyak, N.Kharchenko, E.Izhakevich, V.Golovnya, V.Andruk, V.Kisljuk. Data base of photographic observations of celestial bodies of Golosiiv observatory in Kiev. Newsletters of IAU WG "Wide-field imaging" No 9, 1997
3. V.Kislyuk, A.Yatsenko, G.Ivanov, L.Pakuliak, T.Sergeeva. The FON Astrographic catalogue (FONAC): version1.0. Proc. of Journees 1999 and IX Lohrmann-Kolloquium "Motion of celestial bodies, astromerty and astronomical reference frames", Drezden, September 13-15,1999
4.L.Pakulyak DATABASE of GOLOSIIV PLATE ARCHIVE (DBGPA V2.0), http://gua.db.ukr-vo.org/

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Jochen Greiner, last update: 28-Oct-2010 [Disclaimer]