Gamma-ray Burst 081127

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Nov 08 07:06:04 UT
  NOTICE_TYPE:     Swift-BAT GRB Position
  TRIGGER_NUM:     335715,   Seg_Num: 0
  GRB_RA:          332.093d {+22h 08m 22s} (J2000),
                   332.204d {+22h 08m 49s} (current),
                   331.468d {+22h 05m 52s} (1950)
  GRB_DEC:          +6.859d {+06d 51' 33"} (J2000),
                    +6.903d {+06d 54' 11"} (current),
                    +6.614d {+06d 36' 50"} (1950)
  GRB_ERROR:       3.00 [arcmin radius, statistical only]
  GRB_INTEN:       39061 [cnts]    Image_Peak=492 [image_cnts]
  TRIGGER_DUR:     8.192 [sec] 
  TRIGGER_INDEX:   453     E_range: 15-50 keV
  BKG_INTEN:       289859 [cnts]
  BKG_TIME:        25420.71 SOD {07:03:40.71} UT
  BKG_DUR:         64 [sec]
  GRB_DATE:        14797 TJD;   332 DOY;   08/11/27
  GRB_TIME:        25508.90 SOD {07:05:08.90} UT
  GRB_PHI:         -171.43 [deg]
  GRB_THETA:        42.46 [deg]
  SOLN_STATUS:     0x3
  RATE_SIGNIF:     8.42 [sigma]
  IMAGE_SIGNIF:    7.25 [sigma]
  MERIT_PARAMS:     +1  +0  +0  +3  +1  -1  +0  +0  +2  +0 
  SUN_POSTN:       243.49d {+16h 13m 58s}  -21.20d {-21d 12' 12"}
  SUN_DIST:         91.30 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.69d {+15h 50m 46s}  -24.96d {-24d 57' 43"}
  MOON_DIST:        96.98 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.65,-37.94 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      336.65, 17.12 [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 = 112.22,14.11 [deg].  
  

• red DSS finding chart ps-file
  
  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Nov 08 07:07:41 UT
  NOTICE_TYPE:     Swift-XRT Position
  TRIGGER_NUM:     335715,   Seg_Num: 0
  GRB_RA:          332.0650d {+22h 08m 15.59s} (J2000),
                   332.1763d {+22h 08m 42.31s} (current),
                   331.4400d {+22h 05m 45.60s} (1950)
  GRB_DEC:          +6.8514d {+06d 51' 05.0"} (J2000),
                    +6.8952d {+06d 53' 42.8"} (current),
                    +6.6061d {+06d 36' 22.1"} (1950)
  GRB_ERROR:       5.6 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       9.56e-10 [erg/cm2/sec]
  GRB_SIGNIF:      7.14 [sigma]
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  25630.80 SOD {07:07:10.80} UT,   121.9 [sec] since BAT Trigger Time
  TAM[0-3]:        327.64 237.26 261.38 243.41
  AMPLIFIER:       2
  WAVEFORM:        134
  SUN_POSTN:       243.49d {+16h 13m 59s}  -21.20d {-21d 12' 13"}
  SUN_DIST:         91.27 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.71d {+15h 50m 49s}  -24.96d {-24d 57' 52"}
  MOON_DIST:        96.94 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.62,-37.92 [deg] galactic lon,lat of the burst
  ECL_COORDS:      336.62, 17.13 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Coordinates.  
  COMMENTS:        The XRT position is 1.70 arcmin from the BAT position.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Nov 08 07:07:51 UT
  NOTICE_TYPE:     Swift-XRT Image
  TRIGGER_NUM:     335715,   Seg_Num: 0
  GRB_RA:          332.0650d {+22h 08m 15.5s} (J2000),
                   332.1763d {+22h 08m 42.3s} (current),
                   331.4400d {+22h 05m 45.6s} (1950)
  GRB_DEC:          +6.8514d {+06d 51' 05.0"} (J2000),
                    +6.8952d {+06d 53' 42.8"} (current),
                    +6.6061d {+06d 36' 22.1"} (1950)
  GRB_ERROR:       5.4 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       51 [cnts]
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  25630.80 SOD {07:07:10.80} UT,   121.9 [sec] since BAT Trigger Time
  CENTROID_X:      259.26,  raw= 259  [pixels]
  CENTROID_Y:      297.34,  raw= 297  [pixels]
  ROLL:            248.79 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   -1.53
  GRB_POS_XRT_Z:   -101.45
  IMAGE_URL:       sw00335715000msxps_rw.img
  SUN_POSTN:       243.49d {+16h 13m 59s}  -21.20d {-21d 12' 13"}
  SUN_DIST:         91.27 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.71d {+15h 50m 50s}  -24.96d {-24d 57' 53"}
  MOON_DIST:        96.94 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.62,-37.92 [deg] galactic lon,lat of the burst
  ECL_COORDS:      336.62, 17.13 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Nov 08 07:07:59 UT
  NOTICE_TYPE:     Swift-XRT Processed Image
  TRIGGER_NUM:     335715,   Seg_Num: 0
  GRB_RA:          332.0650d {+22h 08m 15.5s} (J2000),
                   332.1763d {+22h 08m 42.3s} (current),
                   331.4400d {+22h 05m 45.6s} (1950)
  GRB_DEC:          +6.8514d {+06d 51' 05.0"} (J2000),
                    +6.8952d {+06d 53' 42.8"} (current),
                    +6.6061d {+06d 36' 22.1"} (1950)
  GRB_ERROR:       5.4 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       51 [cnts]
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  25630.80 SOD {07:07:10.80} UT,   121.9 [sec] since BAT Trigger Time
  CENTROID_X:      259.26,  raw= 259  [pixels]
  CENTROID_Y:      297.34,  raw= 297  [pixels]
  ROLL:            248.79 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   -1.53
  GRB_POS_XRT_Z:   -101.45
  IMAGE_URL:       sw00335715000msxps_rw.img
  SUN_POSTN:       243.49d {+16h 13m 59s}  -21.20d {-21d 12' 13"}
  SUN_DIST:         91.27 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.71d {+15h 50m 50s}  -24.97d {-24d 57' 54"}
  MOON_DIST:        96.94 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.62,-37.92 [deg] galactic lon,lat of the burst
  ECL_COORDS:      336.62, 17.13 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Processed Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Nov 08 07:08:51 UT
  NOTICE_TYPE:     Swift-BAT GRB Lightcurve
  TRIGGER_NUM:     335715,   Seg_Num: 0
  GRB_RA:          332.093d {+22h 08m 22s} (J2000),
                   332.204d {+22h 08m 49s} (current),
                   331.468d {+22h 05m 52s} (1950)
  GRB_DEC:          +6.859d {+06d 51' 33"} (J2000),
                    +6.903d {+06d 54' 11"} (current),
                    +6.614d {+06d 36' 50"} (1950)
  GRB_DATE:        14797 TJD;   332 DOY;   08/11/27
  GRB_TIME:        25508.90 SOD {07:05:08.90} UT
  TRIGGER_INDEX:   453
  GRB_PHI:         -171.43 [deg]
  GRB_THETA:        42.46 [deg]
  DELTA_TIME:      -18.00 [sec]
  TRIGGER_DUR:     8.192 [sec] 
  SOLN_STATUS:     0x3
  RATE_SIGNIF:     8.42 [sigma]
  IMAGE_SIGNIF:    7.25 [sigma]
  LC_URL:          sw00335715000msb.lc
  SUN_POSTN:       243.50d {+16h 13m 59s}  -21.20d {-21d 12' 13"}
  SUN_DIST:         91.30 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.72d {+15h 50m 52s}  -24.97d {-24d 57' 58"}
  MOON_DIST:        96.96 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.65,-37.94 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      336.65, 17.12 [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 = 112.22,14.11 [deg].  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Nov 08 07:10:20 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     335715,   Seg_Num: 0
  POINT_RA:        332.091d {+22h 08m 22s} (J2000)
  POINT_DEC:        +6.861d {+06d 51' 39"} (J2000)
  POINT_ROLL:      248.787d
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  25639.44 SOD {07:07:19.44} UT,   130.5 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        3.337
  N_STARS:         76
  X_OFFSET:        472 [pixels]
  Y_OFFSET:        520 [pixels]
  X_MAX:           1431 [pixels]
  Y_MAX:           1479 [pixels]
  DET_THRESH:      15
  PHOTO_THRESH:    8
  SL_URL:          sw00335715000msufc0130.fits
  SUN_POSTN:       243.50d {+16h 13m 59s}  -21.20d {-21d 12' 14"}
  SUN_DIST:         91.29 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.73d {+15h 50m 55s}  -24.97d {-24d 58' 07"}
  MOON_DIST:        96.95 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.65,-37.93 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      336.65, 17.12 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Nov 08 07:11:01 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     335715,   Seg_Num: 0
  POINT_RA:        332.091d {+22h 08m 22s} (J2000)
  POINT_DEC:        +6.861d {+06d 51' 39"} (J2000)
  POINT_ROLL:      248.787d
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  25639.44 SOD {07:07:19.44} UT,   130.5 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        3.337
  N_STARS:         76
  X_OFFSET:        472 [pixels]
  Y_OFFSET:        520 [pixels]
  X_MAX:           1431 [pixels]
  Y_MAX:           1479 [pixels]
  DET_THRESH:      15
  PHOTO_THRESH:    8
  SL_URL:          sw00335715000msufc0130.fits
  SUN_POSTN:       243.50d {+16h 13m 59s}  -21.20d {-21d 12' 14"}
  SUN_DIST:         91.29 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.74d {+15h 50m 57s}  -24.97d {-24d 58' 10"}
  MOON_DIST:        96.94 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.65,-37.93 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      336.65, 17.12 [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:     Thu 27 Nov 08 07:12:03 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     335715,   Seg_Num: 0
  POINT_RA:        332.091d {+22h 08m 22s} (J2000)
  POINT_DEC:        +6.861d {+06d 51' 39"} (J2000)
  ROLL:            248.787d
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  25639.44 SOD {07:07:19.44} UT,   130.5 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     249462442
  X_OFFSET:        972 [pixels]
  Y_OFFSET:        764 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1132
  Y_GRB_POS:       924
  BINNING_INDEX:   1
  IM_URL:          sw00335715000msuni0130.fits
  SUN_POSTN:       243.50d {+16h 13m 59s}  -21.20d {-21d 12' 15"}
  SUN_DIST:         91.29 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.75d {+15h 50m 59s}  -24.97d {-24d 58' 16"}
  MOON_DIST:        96.93 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.65,-37.93 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      336.65, 17.12 [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:     Thu 27 Nov 08 07:12:22 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     335715,   Seg_Num: 0
  POINT_RA:        332.091d {+22h 08m 22s} (J2000)
  POINT_DEC:        +6.861d {+06d 51' 39"} (J2000)
  ROLL:            248.787d
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  25639.44 SOD {07:07:19.44} UT,   130.5 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     249462442
  X_OFFSET:        972 [pixels]
  Y_OFFSET:        764 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1132
  Y_GRB_POS:       924
  BINNING_INDEX:   1
  IM_URL:          sw00335715000msuni0130.fits
  SUN_POSTN:       243.50d {+16h 14m 00s}  -21.20d {-21d 12' 15"}
  SUN_DIST:         91.29 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.75d {+15h 51m 00s}  -24.97d {-24d 58' 18"}
  MOON_DIST:        96.93 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.65,-37.93 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      336.65, 17.12 [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:     Thu 27 Nov 08 07:22:27 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     335715,   Seg_Num: 0
  POINT_RA:        332.092d {+22h 08m 22s} (J2000)
  POINT_DEC:        +6.863d {+06d 51' 48"} (J2000)
  POINT_ROLL:      248.788d
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  26368.69 SOD {07:19:28.69} UT,   859.8 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        2.893
  N_STARS:         182
  X_OFFSET:        412 [pixels]
  Y_OFFSET:        204 [pixels]
  X_MAX:           1851 [pixels]
  Y_MAX:           1643 [pixels]
  DET_THRESH:      14
  PHOTO_THRESH:    7
  SL_URL:          sw00335715000msufc0859.fits
  SUN_POSTN:       243.51d {+16h 14m 01s}  -21.21d {-21d 12' 19"}
  SUN_DIST:         91.29 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.84d {+15h 51m 21s}  -24.99d {-24d 59' 13"}
  MOON_DIST:        96.85 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.65,-37.93 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      336.65, 17.13 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Nov 08 07:23:05 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     335715,   Seg_Num: 0
  POINT_RA:        332.092d {+22h 08m 22s} (J2000)
  POINT_DEC:        +6.863d {+06d 51' 48"} (J2000)
  POINT_ROLL:      248.788d
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  26368.69 SOD {07:19:28.69} UT,   859.8 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        2.893
  N_STARS:         182
  X_OFFSET:        412 [pixels]
  Y_OFFSET:        204 [pixels]
  X_MAX:           1851 [pixels]
  Y_MAX:           1643 [pixels]
  DET_THRESH:      14
  PHOTO_THRESH:    7
  SL_URL:          sw00335715000msufc0859.fits
  SUN_POSTN:       243.51d {+16h 14m 01s}  -21.21d {-21d 12' 20"}
  SUN_DIST:         91.29 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.85d {+15h 51m 23s}  -24.99d {-24d 59' 16"}
  MOON_DIST:        96.84 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.65,-37.93 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      336.65, 17.13 [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:     Thu 27 Nov 08 07:23:31 UT
  NOTICE_TYPE:     Swift-XRT Position UPDATE
  TRIGGER_NUM:     335715,   Seg_Num: 0
  GRB_RA:          332.0645d {+22h 08m 15.48s} (J2000),
                   332.1758d {+22h 08m 42.19s} (current),
                   331.4395d {+22h 05m 45.48s} (1950)
  GRB_DEC:          +6.8503d {+06d 51' 01.0"} (J2000),
                    +6.8941d {+06d 53' 38.8"} (current),
                    +6.6051d {+06d 36' 18.1"} (1950)
  GRB_ERROR:       2.4 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       1.00e-10 [erg/cm2/sec]
  GRB_SIGNIF:      10.00 [sigma]
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  25731.00 SOD {07:08:51.00} UT,   222.1 [sec] since BAT Trigger Time
  TAM[0-3]:        100.00 100.00 100.00 100.00
  AMPLIFIER:       1
  WAVEFORM:        31
  SUN_POSTN:       243.51d {+16h 14m 02s}  -21.21d {-21d 12' 20"}
  SUN_DIST:         91.26 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.85d {+15h 51m 24s}  -24.99d {-24d 59' 19"}
  MOON_DIST:        96.81 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.62,-37.92 [deg] galactic lon,lat of the burst
  ECL_COORDS:      336.62, 17.12 [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:     Thu 27 Nov 08 07:24:25 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     335715,   Seg_Num: 0
  POINT_RA:        332.092d {+22h 08m 22s} (J2000)
  POINT_DEC:        +6.863d {+06d 51' 48"} (J2000)
  ROLL:            248.788d
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  26368.69 SOD {07:19:28.69} UT,   859.8 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     249463171
  X_OFFSET:        971 [pixels]
  Y_OFFSET:        763 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1131
  Y_GRB_POS:       923
  BINNING_INDEX:   1
  IM_URL:          sw00335715000msuni0859.fits
  SUN_POSTN:       243.51d {+16h 14m 02s}  -21.21d {-21d 12' 20"}
  SUN_DIST:         91.29 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.86d {+15h 51m 26s}  -24.99d {-24d 59' 24"}
  MOON_DIST:        96.83 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.65,-37.93 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      336.65, 17.13 [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:     Thu 27 Nov 08 07:24:10 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     335715,   Seg_Num: 0
  POINT_RA:        332.092d {+22h 08m 22s} (J2000)
  POINT_DEC:        +6.863d {+06d 51' 48"} (J2000)
  ROLL:            248.788d
  IMG_START_DATE:  14797 TJD;   332 DOY;   08/11/27
  IMG_START_TIME:  26368.69 SOD {07:19:28.69} UT,   859.8 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     249463171
  X_OFFSET:        971 [pixels]
  Y_OFFSET:        763 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1131
  Y_GRB_POS:       923
  BINNING_INDEX:   1
  IM_URL:          sw00335715000msuni0859.fits
  SUN_POSTN:       243.51d {+16h 14m 02s}  -21.21d {-21d 12' 20"}
  SUN_DIST:         91.29 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      237.85d {+15h 51m 25s}  -24.99d {-24d 59' 22"}
  MOON_DIST:        96.84 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:       67.65,-37.93 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      336.65, 17.13 [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 Circular #8560
  J. Mao (INAF-OAB), W. H. Baumgartner (GSFC/UMBC), P. A. Evans (U Leicester), C. Guidorzi (INAF-OAB), S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU), R. Margutti (Univ Bicocca&OAB), C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL), T. Sakamoto (NASA/UMBC) and L. Vetere (PSU) report on behalf of the Swift Team:
  At 07:05:08 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 081127 (trigger=335715). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 332.093, +6.859 which is

     RA(J2000) = 22h 08m 22s
     Dec(J2000) = +06d 51' 33"
  

  with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single-peak of 2 seconds on a broader plateau with a total duration of about 30 sec. The peak count rate was ~900 counts/sec (15-350 keV), at ~7 sec after the trigger.
  The XRT began observing the field at 07:07:10.8 UT, 121.9 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source with an enhanced position: RA, Dec 332.0646, 6.8504 which is equivalent to:

     RA(J2000)  = 22h 08m 15.49s
     Dec(J2000) = +06d 51' 01.6"
  

  with an uncertainty of 2.4 arcseconds (radius, 90% containment). This location is 106 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 6.86e+20 cm^-2 (Kalberla et al. 2005).
  The initial flux in the 2.5 s image was 9.56e-10 erg cm^-2 s^-1 (0.2-10 keV).
  UVOT took a finding chart exposure of 150 seconds with the White filter starting 130 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 typical 3-sigma upper limit has been about 19.6 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 0.09. The XRT position is 9.8 arcseconds from the B = 13 USNO-B1.0 star 0968-0627697.
  Burst Advocate for this burst is J. Mao (jirong.mao AT brera.inaf.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 Circular #8563
  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), J. Mao (INAF-OAB), C. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), 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-119 to T+183 sec from recent telemetry downlinks, we report further analysis of BAT GRB 081127 (trigger #335715) (Mao, et al., GCN Circ. 8560). The BAT ground-calculated position is RA, Dec = 332.075, 6.858 deg, which is

     RA(J2000)  =  22h 08m 18.0s 
     Dec(J2000) = +06d 51' 30.2" 
  

  with an uncertainty of 2.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 51%.
  The mask-weighted light curve shows a single peak starting at ~T-30 sec, peaking around T+0 sec, and ending at ~T+55 sec. T90 (15-350 keV) is 37 +- 10 sec (estimated error including systematics).
  The time-averaged spectrum from T-31.2 to T+8.8 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.10 +- 0.35. The fluence in the 15-150 keV band is 4.9 +- 1.0 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T-1.19 sec in the 15-150 keV band is 0.6 +- 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/335715/BA/
• GCN Circular #8565
  A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
  Using 3559 s of XRT Photon Counting mode data and 3 UVOT images for GRB 081127, 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 = 332.0642, +6.8505 which is equivalent to:

  RA (J2000): 22h 08m 15.40s
  Dec (J2000): +06d 51' 01.7"
  

  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 #8566
  J. Mao, C. Guidorzi (INAF-OAB) and R. Margutti (Univ. Bicocca & INAF-OAB) report on behalf of the Swift XRT team:
  We have analysed the first 4 orbits of Swift-XRT data obtained for GRB 081127 (Mao et al., GCN Circ. 8560), covering from 128 to 219 s in Windowed Timing (WT) and from 220 s to 19.5 ks in Photon Counting (PC) mode data, respectively. The net exposures are 90 s and 9.4 ks for the WT and PC modes data, respectively. The UVOT-enhanced XRT position was given by Beardmore et al. in GCN Circ. 8565.
  The light curve shows an inital steep decay of index 5.6 until 420 s, then it shows a shallow decay with index of 0.6. After 13.3 ks the lightcurve shows a decay with an index of about 2.0. The WT spectrum can be fit with an absorbed power-law model with a photon index of 4.2 +- 0.2 and an absorbing equivalent hydrogen column density is (2.8 +- 0.3)e21 cm^-2, which is larger than the Galactic one, 6.7e20 cm^-2 (Kalberla et al. 2005). The observed (unabsorbed) 0.3-10 keV flux is 3.7(4.5)e-10 erg cm^-2 s^-1. The PC spectrum can be fit with an absorbed power-law model with a photon index of 2.3 +- 0.3 with an absorbing equivalent hydrogen column density compatible with the Galactic value.
  If the light curve continues to decay with an index of 2.0, the count rate 24 hours after the burst will be 2.9e-4 c/s, corresponding to an absorbed flux of 9.9e-15 erg cm^-2 s^-1.
  This is an official product of the Swift-XRT team.
• GCN Circular #8567
  S. T. Holland (CRESST/GSFC/USRA) and J. Mao (INAF-OAB) report on the behalf of the Swift UVOT team:
  The Swift/UVOT observed the field of GRB 081127 starting 113 s after the BAT trigger (Mao, et al. 2008, GCN Circ. 8560). Settled exposures started at T+131 s. We do not find any new source, relative to the DSS or 2MASS, or any variable source inside the UVOT-enhanced XRT error circle (Beardmore, et al. 2008, GCN Circ. 8565). Preliminary 3-sigma upper limits for detecting a source in the white finding chart, and the co-added images, using a 2.5 arcsecond radius circular aperture, are

  Filter   T_start   T_stop   Exp(s)     Mag
  ------------------------------------------
    white       130      380      147   >21.3
  
       v        365   18,799     1473   >21.0
       b        466     7263      568   >21.4
       u        440   13,713     1246   >21.4
     uvw1       415   13,011     1276   >21.6
     uvm2       389   19,496     2004   >21.8
     uvw2       341   17,885     1473   >21.8
    white       490     7468      714   >22.2
  ------------------------------------------
  

  The quoted upper limits have not been corrected for the expected Galactic extinction along the line of sight corresponding to a reddening of E_{B-V} = 0.09 mag (Schlegel, et al., 1998, ApJS, 500, 525). All photometry is on the UVOT photometry system described in Poole et al. (2008, MNRAS, 383, 627).
  The B = 13.15 mag USNO-B1.0 star 0968-0627697 is located approximately 4 arcsec north of the XRT position. UVOT photometry at the location of the X-ray source is contaminated by this star.
• GCN Report 180.1
  GCN_Report 180.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_180_1.pdf by J. Mao at INAF-OAB titled: "Final Swift report on GRB 081127"