Gamma-ray Burst 121102A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Fri 02 Nov 12 02:27:20 UT
  NOTICE_TYPE:     Swift-BAT GRB Position
  TRIGGER_NUM:     537266,   Seg_Num: 0
  GRB_RA:          270.903d {+18h 03m 37s} (J2000),
                   271.089d {+18h 04m 21s} (current),
                   270.177d {+18h 00m 43s} (1950)
  GRB_DEC:         -16.966d {-16d 57' 56"} (J2000),
                   -16.965d {-16d 57' 51"} (current),
                   -16.968d {-16d 58' 05"} (1950)
  GRB_ERROR:       3.00 [arcmin radius, statistical only]
  GRB_INTEN:       4184 [cnts]    Image_Peak=187 [image_cnts]
  TRIGGER_DUR:     1.024 [sec] 
  TRIGGER_INDEX:   146     E_range: 25-100 keV
  BKG_INTEN:       25586 [cnts]
  BKG_TIME:        8806.17 SOD {02:26:46.17} UT
  BKG_DUR:         8 [sec]
  GRB_DATE:        16233 TJD;   307 DOY;   12/11/02
  GRB_TIME:        8822.68 SOD {02:27:02.68} UT
  GRB_PHI:         -132.29 [deg]
  GRB_THETA:         5.99 [deg]
  SOLN_STATUS:     0x3
  RATE_SIGNIF:     14.89 [sigma]
  IMAGE_SIGNIF:    7.37 [sigma]
  MERIT_PARAMS:     +1  +0  +0  +0  +2  -3  +0  +1 -62  +0 
  SUN_POSTN:       217.66d {+14h 30m 38s}  -14.84d {-14d 50' 06"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.64d {+04h 58m 34s}  +20.86d {+20d 51' 34"}
  MOON_DIST:       163.97 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.42,  2.48 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      270.87,  6.47 [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 = 180.06,-20.49 [deg].  
  

• red DSS finding chart ps-file
  
  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Fri 02 Nov 12 02:28:28 UT
  NOTICE_TYPE:     Swift-XRT Position
  TRIGGER_NUM:     537266,   Seg_Num: 0
  GRB_RA:          270.9014d {+18h 03m 36.33s} (J2000),
                   271.0877d {+18h 04m 21.03s} (current),
                   270.1760d {+18h 00m 42.23s} (1950)
  GRB_DEC:         -16.9568d {-16d 57' 24.4"} (J2000),
                   -16.9556d {-16d 57' 20.0"} (current),
                   -16.9594d {-16d 57' 33.9"} (1950)
  GRB_ERROR:       4.9 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       3.45e-09 [erg/cm2/sec]
  GRB_SIGNIF:      10.14 [sigma]
  IMG_START_DATE:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  8870.41 SOD {02:27:50.41} UT,   47.7 [sec] since BAT Trigger Time
  TAM[0-3]:        327.66 237.21 261.42 243.62
  AMPLIFIER:       2
  WAVEFORM:        134
  SUN_POSTN:       217.66d {+14h 30m 39s}  -14.84d {-14d 50' 07"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.65d {+04h 58m 36s}  +20.86d {+20d 51' 35"}
  MOON_DIST:       163.98 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.43,  2.49 [deg] galactic lon,lat of the burst
  ECL_COORDS:      270.87,  6.48 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Coordinates.  
  COMMENTS:        The XRT position is 0.54 arcmin from the BAT position.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Fri 02 Nov 12 02:28:36 UT
  NOTICE_TYPE:     Swift-XRT Image
  TRIGGER_NUM:     537266,   Seg_Num: 0
  GRB_RA:          270.9014d {+18h 03m 36.3s} (J2000),
                   271.0877d {+18h 04m 21.0s} (current),
                   270.1760d {+18h 00m 42.2s} (1950)
  GRB_DEC:         -16.9568d {-16d 57' 24.4"} (J2000),
                   -16.9556d {-16d 57' 20.0"} (current),
                   -16.9594d {-16d 57' 33.9"} (1950)
  GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       103 [cnts]
  IMG_START_DATE:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  8870.41 SOD {02:27:50.41} UT,   47.7 [sec] since BAT Trigger Time
  CENTROID_X:      298.74,  raw= 299  [pixels]
  CENTROID_Y:      285.57,  raw= 286  [pixels]
  ROLL:            264.39 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   -29.28
  GRB_POS_XRT_Z:   -11.68
  IMAGE_URL:       sw00537266000msxps_rw.img
  SUN_POSTN:       217.66d {+14h 30m 39s}  -14.84d {-14d 50' 07"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.65d {+04h 58m 36s}  +20.86d {+20d 51' 35"}
  MOON_DIST:       163.98 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.43,  2.49 [deg] galactic lon,lat of the burst
  ECL_COORDS:      270.87,  6.48 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Fri 02 Nov 12 02:28:59 UT
  NOTICE_TYPE:     Swift-XRT Processed Image
  TRIGGER_NUM:     537266,   Seg_Num: 0
  GRB_RA:          270.9014d {+18h 03m 36.3s} (J2000),
                   271.0877d {+18h 04m 21.0s} (current),
                   270.1760d {+18h 00m 42.2s} (1950)
  GRB_DEC:         -16.9568d {-16d 57' 24.4"} (J2000),
                   -16.9556d {-16d 57' 20.0"} (current),
                   -16.9594d {-16d 57' 33.9"} (1950)
  GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       103 [cnts]
  IMG_START_DATE:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  8870.41 SOD {02:27:50.41} UT,   47.7 [sec] since BAT Trigger Time
  CENTROID_X:      298.74,  raw= 299  [pixels]
  CENTROID_Y:      285.57,  raw= 286  [pixels]
  ROLL:            264.39 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   -29.28
  GRB_POS_XRT_Z:   -11.68
  IMAGE_URL:       sw00537266000msxps_rw.img
  SUN_POSTN:       217.66d {+14h 30m 39s}  -14.84d {-14d 50' 07"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.65d {+04h 58m 37s}  +20.86d {+20d 51' 35"}
  MOON_DIST:       163.98 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.43,  2.49 [deg] galactic lon,lat of the burst
  ECL_COORDS:      270.87,  6.48 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Processed Image.  
  

  
• GCN NOTICE
  

  TITLE:          GCN/INTEGRAL NOTICE
  NOTICE_DATE:    Fri 02 Nov 12 02:30:16 UT
  NOTICE_TYPE:    INTEGRAL Refined
  TRIGGER_NUM:    6691,   Sub_Num: 2
  GRB_RA:         270.8858d {+18h 03m 33s} (J2000),
                  271.0721d {+18h 04m 17s} (current),
                  270.1603d {+18h 00m 38s} (1950)
  GRB_DEC:        -16.9710d {-16d 58' 15"} (J2000),
                  -16.9698d {-16d 58' 10"} (current),
                  -16.9736d {-16d 58' 24"} (1950)
  GRB_ERROR:      2.88 [arcmin, radius, statistical only]
  GRB_INTEN:      11.85 [sigma]
  GRB_TIME:       8846.78 SOD {02:27:26.78} UT
  GRB_DATE:       16233 TJD;   307 DOY;   12/11/02
  SC_RA:          279.19 [deg] (J2000)
  SC_DEC:          -7.22 [deg] (J2000)
  SUN_POSTN:      217.66d {+14h 30m 39s}  -14.84d {-14d 50' 08"}
  SUN_DIST:        51.25 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:      74.67d {+04h 58m 40s}  +20.86d {+20d 51' 36"}
  MOON_DIST:      164.01 [deg]
  GAL_COORDS:      12.41,  2.49 [deg] galactic lon,lat of the burst
  ECL_COORDS:     270.85,  6.47 [deg] ecliptic lon,lat of the burst
  COMMENTS:       INTEGRAL GRB Coordinates.  
  COMMENTS:       Time_Scale=40.0000 and Time_Error=40.0000.  
  COMMENTS:           
  COMMENTS:        NOTE: This INTEGRAL event is spatially(0.00<0.1deg) and temporally(24.0<100sec) coincident with the SWIFT_BAT event (trignum=537266).  
  COMMENTS:       Possibly real GRB event  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Fri 02 Nov 12 02:30:46 UT
  NOTICE_TYPE:     Swift-BAT GRB Lightcurve
  TRIGGER_NUM:     537266,   Seg_Num: 0
  GRB_RA:          270.903d {+18h 03m 37s} (J2000),
                   271.089d {+18h 04m 21s} (current),
                   270.177d {+18h 00m 43s} (1950)
  GRB_DEC:         -16.966d {-16d 57' 56"} (J2000),
                   -16.965d {-16d 57' 51"} (current),
                   -16.968d {-16d 58' 05"} (1950)
  GRB_DATE:        16233 TJD;   307 DOY;   12/11/02
  GRB_TIME:        8822.68 SOD {02:27:02.68} UT
  TRIGGER_INDEX:   146
  GRB_PHI:         -132.29 [deg]
  GRB_THETA:         5.99 [deg]
  DELTA_TIME:      -50.00 [sec]
  TRIGGER_DUR:     1.024 [sec] 
  SOLN_STATUS:     0x3
  RATE_SIGNIF:     14.89 [sigma]
  IMAGE_SIGNIF:    7.37 [sigma]
  LC_URL:          sw00537266000msb.lc
  SUN_POSTN:       217.66d {+14h 30m 39s}  -14.84d {-14d 50' 09"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.67d {+04h 58m 41s}  +20.86d {+20d 51' 36"}
  MOON_DIST:       164.00 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.42,  2.48 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      270.87,  6.47 [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 = 180.06,-20.49 [deg].  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Fri 02 Nov 12 02:36:41 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     537266,   Seg_Num: 0
  POINT_RA:        270.906d {+18h 03m 37s} (J2000)
  POINT_DEC:       -16.964d {-16d 57' 49"} (J2000)
  POINT_ROLL:      264.389d
  IMG_START_DATE:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  8880.33 SOD {02:28:00.33} UT,   57.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        7.612
  N_STARS:         190
  X_OFFSET:        531 [pixels]
  Y_OFFSET:        577 [pixels]
  X_MAX:           1490 [pixels]
  Y_MAX:           1536 [pixels]
  DET_THRESH:      24
  PHOTO_THRESH:    15
  SL_URL:          sw00537266000msufc0057.fits
  SUN_POSTN:       217.67d {+14h 30m 40s}  -14.84d {-14d 50' 13"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.72d {+04h 58m 53s}  +20.86d {+20d 51' 39"}
  MOON_DIST:       164.04 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.42,  2.48 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      270.87,  6.47 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Fri 02 Nov 12 02:37:12 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     537266,   Seg_Num: 0
  POINT_RA:        270.906d {+18h 03m 37s} (J2000)
  POINT_DEC:       -16.964d {-16d 57' 49"} (J2000)
  POINT_ROLL:      264.389d
  IMG_START_DATE:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  8880.33 SOD {02:28:00.33} UT,   57.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        7.612
  N_STARS:         190
  X_OFFSET:        531 [pixels]
  Y_OFFSET:        577 [pixels]
  X_MAX:           1490 [pixels]
  Y_MAX:           1536 [pixels]
  DET_THRESH:      24
  PHOTO_THRESH:    15
  SL_URL:          sw00537266000msufc0057.fits
  SUN_POSTN:       217.67d {+14h 30m 40s}  -14.84d {-14d 50' 14"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.73d {+04h 58m 54s}  +20.86d {+20d 51' 40"}
  MOON_DIST:       164.04 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.42,  2.48 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      270.87,  6.47 [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:     Fri 02 Nov 12 02:38:20 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     537266,   Seg_Num: 0
  POINT_RA:        270.906d {+18h 03m 37s} (J2000)
  POINT_DEC:       -16.964d {-16d 57' 49"} (J2000)
  ROLL:            264.389d
  IMG_START_DATE:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  8880.33 SOD {02:28:00.33} UT,   57.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     373516090
  X_OFFSET:        851 [pixels]
  Y_OFFSET:        897 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1011
  Y_GRB_POS:       1057
  BINNING_INDEX:   1
  IM_URL:          sw00537266000msuni0067.fits
  SUN_POSTN:       217.67d {+14h 30m 40s}  -14.84d {-14d 50' 15"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.74d {+04h 58m 57s}  +20.86d {+20d 51' 40"}
  MOON_DIST:       164.05 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.42,  2.48 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      270.87,  6.47 [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:     Fri 02 Nov 12 02:38:42 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     537266,   Seg_Num: 0
  POINT_RA:        270.906d {+18h 03m 37s} (J2000)
  POINT_DEC:       -16.964d {-16d 57' 49"} (J2000)
  ROLL:            264.389d
  IMG_START_DATE:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  8880.33 SOD {02:28:00.33} UT,   57.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     373516090
  X_OFFSET:        851 [pixels]
  Y_OFFSET:        897 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1011
  Y_GRB_POS:       1057
  BINNING_INDEX:   1
  IM_URL:          sw00537266000msuni0067.fits
  SUN_POSTN:       217.67d {+14h 30m 40s}  -14.84d {-14d 50' 15"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.74d {+04h 58m 58s}  +20.86d {+20d 51' 40"}
  MOON_DIST:       164.06 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.42,  2.48 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      270.87,  6.47 [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 NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Fri 02 Nov 12 02:42:18 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     537266,   Seg_Num: 0
  POINT_RA:        270.908d {+18h 03m 38s} (J2000)
  POINT_DEC:       -16.963d {-16d 57' 44"} (J2000)
  POINT_ROLL:      264.390d
  IMG_START_DATE:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  9092.35 SOD {02:31:32.35} UT,   269.7 [sec] since BAT Trigger Time
  FILTER:          7, U
  BKG_MEAN:        2.582
  N_STARS:         57
  X_OFFSET:        531 [pixels]
  Y_OFFSET:        577 [pixels]
  X_MAX:           1490 [pixels]
  Y_MAX:           1536 [pixels]
  DET_THRESH:      13
  PHOTO_THRESH:    7
  SL_URL:          sw00537266000msufc0269.fits
  SUN_POSTN:       217.67d {+14h 30m 41s}  -14.84d {-14d 50' 18"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.77d {+04h 59m 05s}  +20.86d {+20d 51' 42"}
  MOON_DIST:       164.08 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.43,  2.48 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      270.87,  6.47 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Fri 02 Nov 12 02:42:37 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     537266,   Seg_Num: 0
  POINT_RA:        270.908d {+18h 03m 38s} (J2000)
  POINT_DEC:       -16.963d {-16d 57' 44"} (J2000)
  POINT_ROLL:      264.390d
  IMG_START_DATE:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  9092.35 SOD {02:31:32.35} UT,   269.7 [sec] since BAT Trigger Time
  FILTER:          7, U
  BKG_MEAN:        2.582
  N_STARS:         57
  X_OFFSET:        531 [pixels]
  Y_OFFSET:        577 [pixels]
  X_MAX:           1490 [pixels]
  Y_MAX:           1536 [pixels]
  DET_THRESH:      13
  PHOTO_THRESH:    7
  SL_URL:          sw00537266000msufc0269.fits
  SUN_POSTN:       217.67d {+14h 30m 41s}  -14.84d {-14d 50' 18"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.77d {+04h 59m 06s}  +20.86d {+20d 51' 43"}
  MOON_DIST:       164.09 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.43,  2.48 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      270.87,  6.47 [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:     Fri 02 Nov 12 02:42:55 UT
  NOTICE_TYPE:     Swift-XRT Position UPDATE
  TRIGGER_NUM:     537266,   Seg_Num: 0
  GRB_RA:          270.9008d {+18h 03m 36.19s} (J2000),
                   271.0871d {+18h 04m 20.89s} (current),
                   270.1754d {+18h 00m 42.09s} (1950)
  GRB_DEC:         -16.9577d {-16d 57' 27.7"} (J2000),
                   -16.9565d {-16d 57' 23.2"} (current),
                   -16.9603d {-16d 57' 37.1"} (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:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  9074.00 SOD {02:31:14.00} UT,   251.3 [sec] since BAT Trigger Time
  TAM[0-3]:        100.00 100.00 100.00 100.00
  AMPLIFIER:       1
  WAVEFORM:        31
  SUN_POSTN:       217.67d {+14h 30m 41s}  -14.84d {-14d 50' 18"}
  SUN_DIST:         51.26 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.78d {+04h 59m 06s}  +20.86d {+20d 51' 43"}
  MOON_DIST:       164.09 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.43,  2.49 [deg] galactic lon,lat of the burst
  ECL_COORDS:      270.87,  6.48 [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 0.58% < P(seren) < 1.1%.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Fri 02 Nov 12 02:43:47 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     537266,   Seg_Num: 0
  POINT_RA:        270.908d {+18h 03m 38s} (J2000)
  POINT_DEC:       -16.963d {-16d 57' 44"} (J2000)
  ROLL:            264.390d
  IMG_START_DATE:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  9092.35 SOD {02:31:32.35} UT,   269.7 [sec] since BAT Trigger Time
  FILTER:          7, U
  EXPOSURE_ID:     373516302
  X_OFFSET:        851 [pixels]
  Y_OFFSET:        897 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1011
  Y_GRB_POS:       1057
  BINNING_INDEX:   1
  IM_URL:          sw00537266000msuni0279.fits
  SUN_POSTN:       217.67d {+14h 30m 41s}  -14.84d {-14d 50' 19"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.78d {+04h 59m 08s}  +20.86d {+20d 51' 43"}
  MOON_DIST:       164.09 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.43,  2.48 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      270.87,  6.47 [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:     Fri 02 Nov 12 02:44:02 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     537266,   Seg_Num: 0
  POINT_RA:        270.908d {+18h 03m 38s} (J2000)
  POINT_DEC:       -16.963d {-16d 57' 44"} (J2000)
  ROLL:            264.390d
  IMG_START_DATE:  16233 TJD;   307 DOY;   12/11/02
  IMG_START_TIME:  9092.35 SOD {02:31:32.35} UT,   269.7 [sec] since BAT Trigger Time
  FILTER:          7, U
  EXPOSURE_ID:     373516302
  X_OFFSET:        851 [pixels]
  Y_OFFSET:        897 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1011
  Y_GRB_POS:       1057
  BINNING_INDEX:   1
  IM_URL:          sw00537266000msuni0279.fits
  SUN_POSTN:       217.67d {+14h 30m 41s}  -14.84d {-14d 50' 19"}
  SUN_DIST:         51.27 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:       74.79d {+04h 59m 09s}  +20.86d {+20d 51' 43"}
  MOON_DIST:       164.10 [deg]
  MOON_ILLUM:      91 [%]
  GAL_COORDS:       12.43,  2.48 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      270.87,  6.47 [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 #13938
  V. D'Elia (ASDC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC), J. A. Kennea (PSU), F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL), B. Sbarufatti (INAF-OAB/PSU) and M. H. Siegel (PSU) report on behalf of the Swift Team:
  At 02:27:02 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 121102A (trigger=537266). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 270.903, -16.966 which is

     RA(J2000)  = 18h 03m 37s
     Dec(J2000) = -16d 57' 56"
  

  with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a single FRED-like peak with a duration of about 25 sec. The peak count rate was ~3500 counts/sec (15-350 keV), at ~6 sec after the trigger.
  The XRT began observing the field at 02:27:50.4 UT, 47.7 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source with an enhanced position: RA, Dec 270.9009, -16.9578 which is equivalent to:

     RA(J2000)  = 18h 03m 36.22s
     Dec(J2000) = -16d 57' 28.2"
  

  with an uncertainty of 2.1 arcseconds (radius, 90% containment). This location is 30 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 in excess of the Galactic value (5.33 x 10^21 cm^-2, Kalberla et al. 2005), with an excess column of 3.1 (+3.61/-1.55) x 10^21 cm^-2 (90% confidence).
  The initial flux in the 2.5 s image was 3.45e-09 erg cm^-2 s^-1 (0.2-10 keV).
  UVOT took a finding chart exposure of 150 seconds with the White filter starting 57 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 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. Because of the density of catalogued stars, further analysis is required to report an upper limit for any afterglow in the region. No correction has been made for the large, but uncertain extinction expected.
  This event has all appearances of a GRB: hard BAT spectrum, bright XRT initial detection and fading. Still, we note that the galactic coordinates are l=12 deg, b=2.5 deg, consistent with a galactic origin. We believe it is a GRB, but can not rule out a new galactic transient.
  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/INTEGRAL NOTICE
  NOTICE_DATE:    Fri 02 Nov 12 03:32:29 UT
  NOTICE_TYPE:    INTEGRAL Offline
  TRIGGER_NUM:    6691,   Sub_Num: 3
  GRB_RA:         270.9033d {+18h 03m 37s} (J2000),
                  271.0895d {+18h 04m 21s} (current),
                  270.1779d {+18h 00m 43s} (1950)
  GRB_DEC:        -16.9508d {-16d 57' 02"} (J2000),
                  -16.9496d {-16d 56' 58"} (current),
                  -16.9535d {-16d 57' 11"} (1950)
  GRB_ERROR:      2.00 [arcmin, radius, statistical only]
  GRB_INTEN:      11.85 [sigma]
  GRB_TIME:       8846.78 SOD {02:27:26.78} UT
  GRB_DATE:       16233 TJD;   307 DOY;   12/11/02
  SC_RA:          279.19 [deg] (J2000)
  SC_DEC:          -7.22 [deg] (J2000)
  SUN_POSTN:      217.70d {+14h 30m 49s}  -14.85d {-14d 50' 57"}
  SUN_DIST:        51.23 [deg]   Sun_angle= -3.6 [hr] (East of Sun)
  MOON_POSTN:      75.21d {+05h 00m 51s}  +20.87d {+20d 52' 07"}
  MOON_DIST:      164.49 [deg]
  GAL_COORDS:      12.43,  2.49 [deg] galactic lon,lat of the burst
  ECL_COORDS:     270.87,  6.49 [deg] ecliptic lon,lat of the burst
  COMMENTS:       INTEGRAL GRB Coordinates.  
  COMMENTS:       Time_Scale=40.0000 and Time_Error=40.0000.  
  COMMENTS:           
  COMMENTS:        NOTE: This INTEGRAL event is spatially(0.00<0.1deg) and temporally(24.0<100sec) coincident with the SWIFT_BAT event (trignum=537266).  
  COMMENTS:       refined_coordinates_after_offline_analysis  
  

• GCN Circular #13939
  S.Mereghetti (IASF-Milano), D.Gotz (CEA, Saclay), E.Bozzo, C.Ferrigno, R.Boissay (ISDC, Versoix), and J.Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report:
  a gamma ray burst lasting about 20 s has been detected by IBAS in the IBIS/ISGRI data at 02:27:00 UT of November 2
  The refined coordinates are

    RA  = 270.9034  deg 
   DEC = -16.9509  deg
  

  with an uncertainty of 2 arcmin (90% c.l.).
  A preliminary analysis gives a burst peak flux of about 1 counts/cm2/s (20-200 keV, 1-s integration time) and a fluence in the same energy range of about 1e-6 erg/cm2.
  A plot of the light curve will posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html
• GCN Circular #13942
  W. H. Baumgartner (GSFC/UMBC), S. D. Barthelmy (GSFC), 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 (AGU), 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-61 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 121102A (trigger #537266) (D'Elia, et al., GCN Circ. 13938). The BAT ground-calculated position is RA, Dec = 270.896, -16.951 deg, which is

     RA(J2000)  =  18h 03m 35.1s 
     Dec(J2000) = -16d 57' 03.4" 
  

  with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
  The mask-weighted light curve shows a FED peak starting at ~T-0.2 sec, peaking at ~T+6 sec, and ending at ~T+95 sec. T90 (15-350 keV) is 24.7 +- 3.4 sec (estimated error including systematics).
  The time-averaged spectrum from T-0.30 to T+35.25 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.88 +- 0.07. The fluence in the 15-150 keV band is 1.9 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+5.68 sec in the 15-150 keV band is 2.3 +- 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/537266/BA/
• GCN Circular #13943
  C. Pagani (U. Leicester), V. Mangano (INAF-IASFPA), A. Melandri (INAF-OAB), B. Sbarufatti (INAF-OAB/PSU), D.N. Burrows (PSU), J.A. Kennea (PSU), M.C. Stroh (PSU), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester) and V. D'Elia report on behalf of the Swift-XRT team:
  We have analysed 9.0 ks of XRT data for GRB 121102A (D'Elia et al. GCN Circ. 13938), from 53 s to 18.8 ks after the BAT trigger. The data comprise 203 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The best available XRT position (using the promptly downlinked event data, the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue) is RA, Dec = 270.9009, -16.9576 which is equivalent to:

  RA (J2000): 18 03 36.22
  Dec(J2000): -16 57 27.5
  

  with an uncertainty of 2.0 arcsec (radius, 90% confidence).
  The light curve can be modelled with a series of power-law decays. The initial decay index is alpha=3.33 (+0.22, -0.24). At T+111 s the decay flattens to an alpha of 1.59 (+0.18, -0.11) before breaking again at T+696 s to a final decay with index alpha=1.04 (+0.08, -0.07).
  A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.95 (+/-0.13). The best-fitting absorption column is 8.9 (+/-1.0) x 10^21 cm^-2, in excess of the Galactic value of 5.3 x 10^21 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 1.74 (+0.23, -0.22) and a best-fitting absorption column of 7.7 (+1.9, -1.6) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 5.9 x 10^-11 (9.6 x 10^-11) erg cm^-2 count^-1.
  A summary of the PC-mode spectrum is thus:

  Total column:	     7.7 (+1.9, -1.6) x 10^21 cm^-2
  Galactic foreground: 5.3 x 10^21 cm^-2
  Excess significance: 2.4 sigma
  Photon index:	     1.74 (+0.23, -0.22)
  

  If the light curve continues to decay with a power-law decay index of 1.04, the count rate at T+24 hours will be 2.8 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.7 x 10^-13 (2.7 x 10^-13) erg cm^-2 s^-1.
  The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00537266.
  This circular is an official product of the Swift-XRT team.
• GCN Circular #13945
  J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
  Using 6668 s of XRT Photon Counting mode data and 8 UVOT images for GRB 121102A, 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 = 270.90101, -16.95788 which is equivalent to:

  RA (J2000): 18h 03m 36.24s
  Dec (J2000): -16d 57' 28.4"
  

  with an uncertainty of 1.4 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 #13948
  S. R. Oates (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 121102A 58 s after the BAT trigger (D'Elia et al., GCN Circ. 13938). No optical afterglow consistent with the XRT position (Osborne et al. GCN Circ. 13945) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are:

  Filter         T_start(s)   T_stop(s)      Exp(s)         Mag
  
  white_FC            58          207          147         >20.1
  u_FC               270          519          246         >19.6
  white               58        24618         2113         >21.4
  v                 4994        17253         1278         >20.0
  b                 5814        23858         2022         >21.4
  u                  270        22945         1524         >20.9
  w1                5404        18848         1066         >20.8
  m2                5200        18158         1279         >21.1
  w2                4789        13077         1073         >21.2
  

  The magnitudes in the table are not corrected for the high Galactic extinction due to the reddening of E(B-V) = 1.48 in the direction of the burst (Schlegel et al. 1998).
• GCN Report 401.1
  GCN_Report 401.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_401_1.pdf by V. DElia at ASDC titled: "Swift Observations of GRB 121102A"