Gamma-ray Burst 070508

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:31:59 UT
  NOTICE_TYPE:     Swift-BAT GRB Position
  TRIGGER_NUM:     278854,   Seg_Num: 0
  GRB_RA:          312.783d {+20h 51m 08s} (J2000),
                   313.022d {+20h 52m 05s} (current),
                   311.128d {+20h 44m 31s} (1950)
  GRB_DEC:         -78.368d {-78d 22' 04"} (J2000),
                   -78.340d {-78d 20' 24"} (current),
                   -78.554d {-78d 33' 14"} (1950)
  GRB_ERROR:       3.00 [arcmin radius, statistical only]
  GRB_INTEN:       8588 [cnts]    Image_Peak=882 [image_cnts]
  TRIGGER_DUR:     1.024 [sec] 
  TRIGGER_INDEX:   146     E_range: 50-350 keV
  BKG_INTEN:       37508 [cnts]
  BKG_TIME:        15486.05 SOD {04:18:06.05} UT
  BKG_DUR:         8 [sec]
  GRB_DATE:        14228 TJD;   128 DOY;   07/05/08
  GRB_TIME:        15497.83 SOD {04:18:17.83} UT
  GRB_PHI:         -126.96 [deg]
  GRB_THETA:        28.25 [deg]
  SOLN_STATUS:     0x3
  RATE_SIGNIF:     51.03 [sigma]
  IMAGE_SIGNIF:    19.90 [sigma]
  MERIT_PARAMS:     +1  +0  +0  +0  +3 +35  +0  +0 +29  +1 
  SUN_POSTN:        44.76d {+02h 59m 02s}  +16.98d {+16d 58' 33"}
  SUN_DIST:        106.97 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.22d {+19h 40m 53s}  -25.43d {-25d 25' 38"}
  MOON_DIST:        53.54 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.42 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      284.61,-57.12 [deg] ecliptic lon,lat of the burst (or transient)
  COMMENTS:        SWIFT-BAT GRB Coordinates.  
  COMMENTS:        This Notice was delayed by more than 60 sec past the end of the trigger integration interval;  
  COMMENTS:        probably due to it occurring during a Malindi downlink session.  
  COMMENTS:        This is a rate trigger.  
  COMMENTS:        A point_source was found.  
  COMMENTS:        This does not match any source in the on-board catalog.  
  COMMENTS:        This does not match any source in the ground catalog.  
  COMMENTS:        This is a GRB.  
  COMMENTS:        This trigger occurred at longitude,latitude = 12.73,-9.64 [deg].  
  

• red DSS finding chart ps-file
  
  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:32:32 UT
  NOTICE_TYPE:     Swift-XRT Position
  TRIGGER_NUM:     278854,   Seg_Num: 0
  GRB_RA:          312.7959d {+20h 51m 11.0s} (J2000),
                   313.0356d {+20h 52m 08.5s} (current),
                   311.1401d {+20h 44m 33.6s} (1950)
  GRB_DEC:         -78.3850d {-78d 23' 06.0"} (J2000),
                   -78.3571d {-78d 21' 25.7"} (current),
                   -78.5712d {-78d 34' 16.3"} (1950)
  GRB_ERROR:       5.0 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       1.59e-09 [erg/cm2/sec]
  GRB_SIGNIF:      7.93 [sigma]
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  15573.75 SOD {04:19:33.75} UT,   75.9 [sec] since BAT Trigger Time
  TAM[0-3]:        327.62 237.20 261.35 243.44
  AMPLIFIER:       2
  WAVEFORM:        134
  SUN_POSTN:        44.76d {+02h 59m 03s}  +16.98d {+16d 58' 34"}
  SUN_DIST:        106.96 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.23d {+19h 40m 54s}  -25.43d {-25d 25' 34"}
  MOON_DIST:        53.56 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.86,-32.42 [deg] galactic lon,lat of the burst
  ECL_COORDS:      284.60,-57.13 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Coordinates.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:32:33 UT
  NOTICE_TYPE:     Swift-XRT Image
  TRIGGER_NUM:     278854,   Seg_Num: 0
  GRB_RA:          312.7959d {+20h 51m 11.0s} (J2000),
                   313.0356d {+20h 52m 08.5s} (current),
                   311.1401d {+20h 44m 33.6s} (1950)
  GRB_DEC:         -78.3850d {-78d 23' 06.0"} (J2000),
                   -78.3571d {-78d 21' 25.7"} (current),
                   -78.5712d {-78d 34' 16.3"} (1950)
  GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       63 [cnts]
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  15573.75 SOD {04:19:33.75} UT,   75.9 [sec] since BAT Trigger Time
  CENTROID_X:      318.80,  raw= 319  [pixels]
  CENTROID_Y:      264.49,  raw= 264  [pixels]
  ROLL:            88.35 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   -78.98
  GRB_POS_XRT_Z:   38.89
  IMAGE_URL:       sw00278854000msxps_rw.img
  SUN_POSTN:        44.76d {+02h 59m 03s}  +16.98d {+16d 58' 34"}
  SUN_DIST:        106.96 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.23d {+19h 40m 54s}  -25.43d {-25d 25' 34"}
  MOON_DIST:        53.56 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.86,-32.42 [deg] galactic lon,lat of the burst
  ECL_COORDS:      284.60,-57.13 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:33:33 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.849d {+20h 51m 24s} (J2000)
  POINT_DEC:       -78.362d {-78d 21' 44"} (J2000)
  POINT_ROLL:      88.343d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  15582.43 SOD {04:19:42.43} UT,   84.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        1.305
  N_STARS:         72
  X_OFFSET:        424 [pixels]
  Y_OFFSET:        624 [pixels]
  X_MAX:           1383 [pixels]
  Y_MAX:           1583 [pixels]
  DET_THRESH:      10
  PHOTO_THRESH:    5
  SL_URL:          sw00278854000msufc0084.fits
  SUN_POSTN:        44.76d {+02h 59m 03s}  +16.98d {+16d 58' 34"}
  SUN_DIST:        106.95 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.24d {+19h 40m 57s}  -25.42d {-25d 25' 27"}
  MOON_DIST:        53.54 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.44 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.64,-57.12 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:32:39 UT
  NOTICE_TYPE:     Swift-XRT Processed Image
  TRIGGER_NUM:     278854,   Seg_Num: 0
  GRB_RA:          312.7959d {+20h 51m 11.0s} (J2000),
                   313.0356d {+20h 52m 08.5s} (current),
                   311.1401d {+20h 44m 33.6s} (1950)
  GRB_DEC:         -78.3850d {-78d 23' 06.0"} (J2000),
                   -78.3571d {-78d 21' 25.7"} (current),
                   -78.5712d {-78d 34' 16.3"} (1950)
  GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       63 [cnts]
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  15573.75 SOD {04:19:33.75} UT,   75.9 [sec] since BAT Trigger Time
  CENTROID_X:      318.80,  raw= 319  [pixels]
  CENTROID_Y:      264.49,  raw= 264  [pixels]
  ROLL:            88.35 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   -78.98
  GRB_POS_XRT_Z:   38.89
  IMAGE_URL:       sw00278854000msxps_rw.img
  SUN_POSTN:        44.76d {+02h 59m 03s}  +16.98d {+16d 58' 34"}
  SUN_DIST:        106.96 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.23d {+19h 40m 55s}  -25.43d {-25d 25' 33"}
  MOON_DIST:        53.56 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.86,-32.42 [deg] galactic lon,lat of the burst
  ECL_COORDS:      284.60,-57.13 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Processed Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:34:04 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.849d {+20h 51m 24s} (J2000)
  POINT_DEC:       -78.362d {-78d 21' 44"} (J2000)
  POINT_ROLL:      88.343d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  15582.43 SOD {04:19:42.43} UT,   84.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        1.305
  N_STARS:         72
  X_OFFSET:        424 [pixels]
  Y_OFFSET:        624 [pixels]
  X_MAX:           1383 [pixels]
  Y_MAX:           1583 [pixels]
  DET_THRESH:      10
  PHOTO_THRESH:    5
  SL_URL:          sw00278854000msufc0084.fits
  SUN_POSTN:        44.76d {+02h 59m 03s}  +16.98d {+16d 58' 35"}
  SUN_DIST:        106.95 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.24d {+19h 40m 58s}  -25.42d {-25d 25' 23"}
  MOON_DIST:        53.54 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.44 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.64,-57.12 [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:     Tue 08 May 07 04:34:44 UT
  NOTICE_TYPE:     Swift-BAT GRB Lightcurve
  TRIGGER_NUM:     278854,   Seg_Num: 0
  GRB_RA:          312.783d {+20h 51m 08s} (J2000),
                   313.022d {+20h 52m 05s} (current),
                   311.128d {+20h 44m 31s} (1950)
  GRB_DEC:         -78.368d {-78d 22' 04"} (J2000),
                   -78.340d {-78d 20' 24"} (current),
                   -78.554d {-78d 33' 14"} (1950)
  GRB_DATE:        14228 TJD;   128 DOY;   07/05/08
  GRB_TIME:        15497.83 SOD {04:18:17.83} UT
  TRIGGER_INDEX:   146
  GRB_PHI:         -126.96 [deg]
  GRB_THETA:        28.25 [deg]
  DELTA_TIME:      -56.00 [sec]
  TRIGGER_DUR:     1.024 [sec] 
  SOLN_STATUS:     0x3
  RATE_SIGNIF:     51.03 [sigma]
  IMAGE_SIGNIF:    19.90 [sigma]
  LC_URL:          sw00278854000msb.lc
  SUN_POSTN:        44.76d {+02h 59m 03s}  +16.98d {+16d 58' 35"}
  SUN_DIST:        106.97 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.25d {+19h 40m 59s}  -25.42d {-25d 25' 18"}
  MOON_DIST:        53.54 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.42 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      284.61,-57.12 [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 = 12.73,-9.64 [deg].  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:34:37 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.849d {+20h 51m 24s} (J2000)
  POINT_DEC:       -78.362d {-78d 21' 44"} (J2000)
  ROLL:            88.343d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  15582.43 SOD {04:19:42.43} UT,   84.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     200290784
  X_OFFSET:        813 [pixels]
  Y_OFFSET:        1037 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       973
  Y_GRB_POS:       1197
  BINNING_INDEX:   1
  IM_URL:          sw00278854000msuni0084.fits
  SUN_POSTN:        44.76d {+02h 59m 03s}  +16.98d {+16d 58' 35"}
  SUN_DIST:        106.95 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.25d {+19h 40m 59s}  -25.42d {-25d 25' 19"}
  MOON_DIST:        53.54 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.44 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.64,-57.12 [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:     Tue 08 May 07 04:34:59 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.849d {+20h 51m 24s} (J2000)
  POINT_DEC:       -78.362d {-78d 21' 44"} (J2000)
  ROLL:            88.343d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  15582.43 SOD {04:19:42.43} UT,   84.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     200290784
  X_OFFSET:        813 [pixels]
  Y_OFFSET:        1037 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       973
  Y_GRB_POS:       1197
  BINNING_INDEX:   1
  IM_URL:          sw00278854000msuni0084.fits
  SUN_POSTN:        44.76d {+02h 59m 03s}  +16.98d {+16d 58' 35"}
  SUN_DIST:        106.95 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.25d {+19h 41m 00s}  -25.42d {-25d 25' 16"}
  MOON_DIST:        53.54 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.44 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.64,-57.12 [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:        All 4 attachments are included.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:40:06 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.836d {+20h 51m 21s} (J2000)
  POINT_DEC:       -78.364d {-78d 21' 49"} (J2000)
  POINT_ROLL:      88.357d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  16372.39 SOD {04:32:52.39} UT,   874.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        2.718
  N_STARS:         57
  X_OFFSET:        493 [pixels]
  Y_OFFSET:        717 [pixels]
  X_MAX:           1452 [pixels]
  Y_MAX:           1676 [pixels]
  DET_THRESH:      14
  PHOTO_THRESH:    7
  SL_URL:          sw00278854000msufc0874.fits
  SUN_POSTN:        44.77d {+02h 59m 04s}  +16.98d {+16d 58' 39"}
  SUN_DIST:        106.96 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.30d {+19h 41m 12s}  -25.41d {-25d 24' 39"}
  MOON_DIST:        53.55 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.43 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.63,-57.12 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:40:32 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.836d {+20h 51m 21s} (J2000)
  POINT_DEC:       -78.364d {-78d 21' 49"} (J2000)
  POINT_ROLL:      88.357d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  16372.39 SOD {04:32:52.39} UT,   874.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        2.718
  N_STARS:         57
  X_OFFSET:        493 [pixels]
  Y_OFFSET:        717 [pixels]
  X_MAX:           1452 [pixels]
  Y_MAX:           1676 [pixels]
  DET_THRESH:      14
  PHOTO_THRESH:    7
  SL_URL:          sw00278854000msufc0874.fits
  SUN_POSTN:        44.77d {+02h 59m 04s}  +16.98d {+16d 58' 39"}
  SUN_DIST:        106.96 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.30d {+19h 41m 13s}  -25.41d {-25d 24' 36"}
  MOON_DIST:        53.55 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.43 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.63,-57.12 [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:     Tue 08 May 07 04:41:37 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.836d {+20h 51m 21s} (J2000)
  POINT_DEC:       -78.364d {-78d 21' 49"} (J2000)
  ROLL:            88.357d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  16372.39 SOD {04:32:52.39} UT,   874.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     200291574
  X_OFFSET:        812 [pixels]
  Y_OFFSET:        1036 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       972
  Y_GRB_POS:       1196
  BINNING_INDEX:   1
  IM_URL:          sw00278854000msuni0874.fits
  SUN_POSTN:        44.77d {+02h 59m 04s}  +16.98d {+16d 58' 40"}
  SUN_DIST:        106.96 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.31d {+19h 41m 15s}  -25.41d {-25d 24' 28"}
  MOON_DIST:        53.55 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.43 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.63,-57.12 [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:     Tue 08 May 07 04:41:58 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.836d {+20h 51m 21s} (J2000)
  POINT_DEC:       -78.364d {-78d 21' 49"} (J2000)
  ROLL:            88.357d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  16372.39 SOD {04:32:52.39} UT,   874.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     200291574
  X_OFFSET:        812 [pixels]
  Y_OFFSET:        1036 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       972
  Y_GRB_POS:       1196
  BINNING_INDEX:   1
  IM_URL:          sw00278854000msuni0874.fits
  SUN_POSTN:        44.77d {+02h 59m 04s}  +16.98d {+16d 58' 40"}
  SUN_DIST:        106.96 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.32d {+19h 41m 16s}  -25.41d {-25d 24' 25"}
  MOON_DIST:        53.55 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.43 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.63,-57.12 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Image.  
  COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
  COMMENTS:        The image has 2x2 binning (compression).  
  COMMENTS:        All 4 attachments are included.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:44:07 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.836d {+20h 51m 21s} (J2000)
  POINT_DEC:       -78.364d {-78d 21' 49"} (J2000)
  POINT_ROLL:      88.357d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  16478.08 SOD {04:34:38.08} UT,   980.3 [sec] since BAT Trigger Time
  FILTER:          3, V
  BKG_MEAN:        2.947
  N_STARS:         108
  X_OFFSET:        493 [pixels]
  Y_OFFSET:        717 [pixels]
  X_MAX:           1452 [pixels]
  Y_MAX:           1676 [pixels]
  DET_THRESH:      14
  PHOTO_THRESH:    8
  SL_URL:          sw00278854000msufc0980.fits
  SUN_POSTN:        44.77d {+02h 59m 04s}  +16.98d {+16d 58' 42"}
  SUN_DIST:        106.96 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.34d {+19h 41m 21s}  -25.40d {-25d 24' 09"}
  MOON_DIST:        53.55 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.43 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.63,-57.12 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:44:34 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.836d {+20h 51m 21s} (J2000)
  POINT_DEC:       -78.364d {-78d 21' 49"} (J2000)
  POINT_ROLL:      88.357d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  16478.08 SOD {04:34:38.08} UT,   980.3 [sec] since BAT Trigger Time
  FILTER:          3, V
  BKG_MEAN:        2.947
  N_STARS:         108
  X_OFFSET:        493 [pixels]
  Y_OFFSET:        717 [pixels]
  X_MAX:           1452 [pixels]
  Y_MAX:           1676 [pixels]
  DET_THRESH:      14
  PHOTO_THRESH:    8
  SL_URL:          sw00278854000msufc0980.fits
  SUN_POSTN:        44.77d {+02h 59m 04s}  +16.98d {+16d 58' 42"}
  SUN_DIST:        106.96 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.34d {+19h 41m 22s}  -25.40d {-25d 24' 06"}
  MOON_DIST:        53.55 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.43 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.63,-57.12 [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:     Tue 08 May 07 04:45:31 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.836d {+20h 51m 21s} (J2000)
  POINT_DEC:       -78.364d {-78d 21' 49"} (J2000)
  ROLL:            88.357d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  16478.08 SOD {04:34:38.08} UT,   980.3 [sec] since BAT Trigger Time
  FILTER:          3, V
  EXPOSURE_ID:     200291680
  X_OFFSET:        812 [pixels]
  Y_OFFSET:        1036 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       972
  Y_GRB_POS:       1196
  BINNING_INDEX:   1
  IM_URL:          sw00278854000msuni0980.fits
  SUN_POSTN:        44.77d {+02h 59m 05s}  +16.98d {+16d 58' 43"}
  SUN_DIST:        106.96 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.35d {+19h 41m 24s}  -25.40d {-25d 23' 59"}
  MOON_DIST:        53.56 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.43 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.63,-57.12 [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:     Tue 08 May 07 04:45:50 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     278854,   Seg_Num: 0
  POINT_RA:        312.836d {+20h 51m 21s} (J2000)
  POINT_DEC:       -78.364d {-78d 21' 49"} (J2000)
  ROLL:            88.357d
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  16478.08 SOD {04:34:38.08} UT,   980.3 [sec] since BAT Trigger Time
  FILTER:          3, V
  EXPOSURE_ID:     200291680
  X_OFFSET:        812 [pixels]
  Y_OFFSET:        1036 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       972
  Y_GRB_POS:       1196
  BINNING_INDEX:   1
  IM_URL:          sw00278854000msuni0980.fits
  SUN_POSTN:        44.77d {+02h 59m 05s}  +16.98d {+16d 58' 43"}
  SUN_DIST:        106.96 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.35d {+19h 41m 25s}  -25.40d {-25d 23' 57"}
  MOON_DIST:        53.56 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.88,-32.43 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      284.63,-57.12 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Image.  
  COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
  COMMENTS:        The image has 2x2 binning (compression).  
  COMMENTS:        All 4 attachments are included.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 08 May 07 04:45:50 UT
  NOTICE_TYPE:     Swift-UVOT Position
  TRIGGER_NUM:     278854,   Seg_Num: 0
  GRB_RA:          312.7991d {+20h 51m 11.78s} (J2000),
                   313.0388d {+20h 52m 09.31s} (current),
                   311.1434d {+20h 44m 34.41s} (1950)
  GRB_DEC:         -78.3846d {-78d 23' 04.5"} (J2000),
                   -78.3567d {-78d 21' 24.2"} (current),
                   -78.5708d {-78d 34' 14.9"} (1950)
  GRB_ERROR:       0.4 [arcsec radius, statistical only]
  GRB_MAG:         19.39 +/- 0.50 [mag]
  FILTER:          10, White
  IMG_START_DATE:  14228 TJD;   128 DOY;   07/05/08
  IMG_START_TIME:  15583.00 SOD {04:19:43.00} UT,   85.2 [sec] since BAT Trigger Time
  SUN_POSTN:        44.77d {+02h 59m 05s}  +16.98d {+16d 58' 43"}
  SUN_DIST:        106.97 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
  MOON_POSTN:      295.35d {+19h 41m 25s}  -25.40d {-25d 23' 57"}
  MOON_DIST:        53.57 [deg]
  MOON_ILLUM:      71 [%]
  GAL_COORDS:      314.86,-32.42 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      284.60,-57.13 [deg] ecliptic lon,lat of the burst (or transient)
  COMMENTS:        SWIFT UVOT Position Notice.  
  COMMENTS:        This Notice was ground-generated -- not flight-generated.  
  

• GCN Circular #6383
  D. Grupe (PSU), S. D. Barthelmy (GSFC), M. M. Chester (PSU), G. Cusumano (INAF-IASFPA), C. B. Markwardt (GSFC/UMD), F. E. Marshall (NASA/GSFC), C. Pagani (PSU), D. M. Palmer (LANL), J. L. Racusin (PSU), M. Stamatikos (NASA/ORAU) and L. Vetere (PSU) report on behalf of the Swift Team:
  At 04:18:17 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 070508 (trigger=278854). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 312.783, -78.368 which is

     RA(J2000)  =  20h 51m 08s
     Dec(J2000) = -78d 22' 04"
  

  with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a complex multi-peaked structure with a duration of at least 40 sec. The peak count rate was ~45000 counts/sec (15-350 keV), at ~15 sec after the trigger.
  The XRT began observing the field at 04:19:33 UT, 76 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 312.7959, -78.3850 which is

  RA(J2000)  =  20h 51m 11.0s
  Dec(J2000) = -78d 23' 06.0"
  

  with an uncertainty of 5.0 arcseconds (radius, 90% containment). This location is 62 arcseconds from the BAT on-board position, within the BAT error circle. The initial flux in the 2.5s image was 1.6e-09 erg/cm2/s (0.2-10 keV).
  UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 85 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at

    RA(J2000)  =	20:51:11.81 = 312.7992
    DEC(J2000) = -78:23:04.9  = -78.3847
  

  with a 1-sigma error radius of about 0.5 arc sec. This position is 2.6 arc sec. from the center of the XRT error circle. The estimated magnitude is 19.4 with a 1-sigma error of about 0.5 mag. No correction has been made for the expected reddening of E(B-V) of 0.14.
• GCN Circular #6384
  Klotz, A. (CESR-OMP), Boer M. (OHP), Atteia J.L. (LATT-OMP) report:
  We imaged the field of GRB 070508 detected by SWIFT (trigger 278854) with the TAROT robotic telescope (D=25cm) located at the European Southern Observatory, La Silla observatory, Chile.
  The observations started 829s after the GRB trigger (6s after the notice). The elevation of the field increased from from 28 degrees above horizon and weather conditions were good.
  The date of trigger : t0 = 2007-05-08T04:18:17.6
  The first image is 90.0s exposure in tracking mode with no filter. We do not detect the UVOT candidate couterpart mentioned by Grupe et al. (GCNC 6383) with a limiting magnitude of: t0+829s to t0+919s : R > 17.8
  We co-added a series of exposures with no filter: t0+829s to t0+1704s : R > 19.7
  Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction.
  N.B. Galactic coordinates are lon=314.8792 lat=-32.4208 and the galactic extinction in R band is 0.1 magnitudes estimated from D. Schlegel et al. 1998ApJ...500..525S.
  This message may be cited.
• GCN Circular #6385
  S. Piranomonte, S. Covino, L.A. Antonelli, A. Burzi, L. Calzoletti, S. Campana, G. Chincarini, M.L. Conciatore, S. Cutini, P. D'Avanzo, V. D'Elia, F. Dalessio, F. Fiore, D. Fugazza, P. Goldoni, D. Guetta, C. Guidorzi, G.L. Israel, D. Malesani, N. Masetti, A. Melandri, E. Meurs, L. Nicastro, E. Palazzi, E. Pian, D. Rizzuto, L. Stella, G. Stratta, G. Tagliaferri, G. Tosti, V. Testa, S.D. Vergani, F. Vitali report on behalf of the REM team:
  We observed the field of the GRB 070508 (Grupe et al. GCN 6383) with the robotic 60-cm REM telescope located at La Silla (Chile). A set of observations was performed automatically in the optical and near infrared filters (V, R, I and J, H, K, z).
  Preliminary analysis of the first frames at 4:34:11 UT (~16 min after the burst, ~2 min after the BAT trigger) shows a marginal detection of the UVOT afterglow at H~15.2.
  Further observations are in progress.
  This message may be cited.
• GCN Circular #6386
  E. Berger (Carnegie) and A. Burgasser (MIT) report:
  "We observed the position of GRB 070508 (GCN 6383) with MAGIC on the Magellan/Clay 6.5 m telescope starting 28 min after the burst. In a 180 sec I-band image we detect a bright object not visible in DSS within the XRT error circle at:

   	RA  = 20:51:12.07
   	DEC = -78:23:07.0
  

  with an uncertainty of about 0.5". This is about 2.5" away from the UVOT position."
• GCN Circular #6387
  A. C. Gilmore and P. M. Kilmartin (Mt John Observatory of the University of Canterbury) report:
  We stacked 20 x 120 second clear exposures of the GRB 070508 taken with a SBIG ST9e CCD on a 0.6 m f/6.4 reflector at Mt John Observatory. The exposure set was centred on May 8 07:49 UT (3.5 hours after the burst). Our images do not show any object at the coordinates given by Berger (GCN 6386) to a limiting R magnitude of approximately 20.5 based on USNO B1.0 stars.
  These observations were made as part of the AAVSO GRB Network, and supported by a grant from the Curry Foundation.
• GCN Circular #6388
  D. Grupe, J. Racusin, & C. Pagani (PSU) report on behalf of the Swift/XRT team
  We have analyzed the first three orbits of GRB 070508 (Grupe et al., GCN 6383) with total observing times of 1.3 ks in Windowed Timing mode and 1.3 ks in Photon Counting mode in the Swift XRT. The Photon Counting mode image of the third orbit provides a refined XRT position at RA, DEC= 312.7993, -78.3848, which is

  RA(J2000) = 20h 51m 11.84s
  Dec(J2000) = -78d 23' 05.4"
  

  with an error of 5.6" (90% confidence). This position is 2.6" away from the preliminary XRT position reported in GCN 6383 and 1.9" from the optical position given in GCN 6386 (Berger & Burgasser).
  The XRT observations in Windowed Timing more started at the end of a flare and both Windowed timing and Photon Counting mode display the rapid decay of the afterglow with a decay slope of 1.15+/-0.11 measured from the PC data. The prediction 24h after the burst is a 0.3-10.0 keV flux of 3.2e-12 ergs/s/cm2 or about 0.04 XRT counts/s.
  The Windowed Timing mode data can be fitted by a single power law with a photon index Gamma=2.05+-0.04 and an absorption column density of NH=(3.8+/-0.2)e21cm-2. The Galactic absorption density in the direction of the burst is 8.60e20cm-2 (Dickey & Lockman, 1990). The PC data are consistent with this result. According to the relation given in Grupe et al. (2007, AJ, 133, 2216) the excess absorption suggests that the burst has a redshift of less than 2.6.
  This circular is an official product of the Swift XRT team.
• GCN Circular #6389
  Christina C. Thoene, Johan P. U. Fynbo (DARK) and Andrew Williams (Perth Observatory) report:
  We observed the OT of GRB 070508 (GCN 6383, Grupe et al.) with DFOSC at the Danish 1.54m on La Silla in V, R and I band, starting at May 8, 08:15 UT (3.8h after the burst) until sunrise. The burst is clearly detected in 300s exposures in R and I band, but undetected in 600s V band images. At a mean time of 4.1h after the burst, we measure the following magnitudes (based on preliminary photometric zeropoints):

  I = 20.5 +- 0.2
  R = 21.5 +- 0.2
  V > 22.9
  

  which indicates a red color. The nondetection in V together with the red color might suggest a redshift of z > 3.5. The afterglow is clearly fading between 3.8h and 5.8h after the burst, showing a rather steep temporal slope in the I band of alpha = 3.1 +-0.6.
• GCN Circular #6390
  S. D. Barthelmy (GSFC), L. Barbier (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), D. Grupe (PSU), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC) on behalf of the Swift-BAT team:
  Using the data set from T-240 to T+962 sec from recent telemetry downlinks, we report further analysis of BAT GRB 070508 (trigger #278854) (Grupe, et al., GCN Circ. 6383). The BAT ground-calculated position is RA, Dec = 312.832, -78.382 deg, which is

     RA(J2000)  =  20h 51m 19.8s 
     Dec(J2000) = -78d 22' 54.8" 
  

  with an uncertainty of 0.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 62%.
  The mask-weighted lightcurve consists of ~20 main peaks (between T+0 and T+20 sec). The emission starts at ~T-20 sec and clearly extends out to T+30 sec and at a lesser level extends out past T+800 sec. T90 (15-350 keV) is 21 +- 1 sec (estimated error including systematics).
  The time-averaged spectrum from T-13.8 to T+33.1 is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.14 +- 0.12, and Epeak of 258 +- 134 keV (chi squared 27.7 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 2.0 +- 0.0 x 10^-5 erg/cm2 and the 1-sec peak flux measured from T+10.84 sec in the 15-150 keV band is 24.7 +- 0.6 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.36 +- 0.03 (chi squared 38.4 for 57 d.o.f.). All the quoted errors are at the 90% confidence level.
  We note that the TDRSS messages for this burst were delayed in transmission to the ground because the burst occurred at the beginning of an 11-minute Malindi downlink session.
• GCN Circular #6391
  B. E. Cobb (Yale), part of the larger SMARTS consortium, reports:
  Using the ANDICAM instrument on the 1.3m telescope at CTIO, we obtained optical imaging of the error region of GRB 070508 (GCN 6383, Grupe et al.) with a mid-exposure time of 2007-05-08 06:25 UT (~2.1 hrs post-burst). The total summed exposure time amounted to 36 minutes in I.
  A source is detected at the UVOT afterglow coordinates (GRB 6383, Grupe et al.) with a magnitude of I=20.7+/-0.3, calibrated using USNO-B1.0 values.
• GCN Circular #6392
  F.E. Marshall (NASA/GSFC) and D. Grupe (PSU) report on behalf of the Swift/UVOT team:
  UVOT began observing GRB 070508 68s after the BAT trigger (Grupe et al., GCN Circ. 6383). A fading afterglow is detected in the White and V filters, while no afterglow is seen in the B, U, or UV filters. We use the first white exposure to obtain an improved position of
  RA(J2000) = 20h 51m 11.68s Dec(J2000) = -78d 23' 05.0"
  with a 90% confidence statistical uncertainty in each axis of 0.5". There is also a 1-sigma systematic uncertainty in the UVOT aspect solution of about 0.3". This revised position is 0.6" from the initial UVOT position reported by Grupe et al. and 2.3" from the position for the I-band object reported by Berger and Burgasser (GCN Circ. 6386).
  Thoene et al. (GCN Circ. 6389) have suggested a redshift of greater than 3.5 based on their detections in the I and R bands and lack of detection in V band. The UVOT detection in the V filter indicates a redshift of less than 5.
  Photometry results with statistical errors are given below for the 7 UVOT filters. The start and stop times (in seconds) are referenced to the trigger time, and the total exposure time (Exp.) is given in seconds.

             T_start  T_stop    Exp.          Mag
  
  White         86      185      98         19.8+/-0.12 (1-sigma)
  V            192      571     393         19.7+/-0.22 (1-sigma)
  B            669     1946      86        >19.6 (90% confidence)
  U            644     1933     117        >18.4 (90% confidence)
  UVW1         620     7389     283        >18.2 (90% confidence)
  UWM2        1705     7215     236        >17.8 (90% confidence)
  UVW2         698     6806     294        >18.6 (90% confidence)
  

  No correction has been made for the expected Galactic reddening of E(B-V)=0.14
• GCN Circular #6396
  T. Uehara, M. Ohno, T. Takahashi, Y. Fukazawa, C. Kira (Hiroshima U.), T. Enoto, R. Miyawaki, K. Nakawaza, K. Makishima (Univ. of Tokyo), K. Yamaoka, Y. E. Nakagawa, S. Sugita (Aoyama Gakuin U.), Y. Urata, K. Onda, M. Suzuki, K. Morigami, N. Kodaka, M. Tashiro (Saitama U.), M. Suzuki, T. Tamagawa, Y. Terada (RIKEN), S. Hong (Nihon U.), M. Kokubun, T. Takahashi (ISAS/JAXA), E. Sonoda, M.Yamauchi (Univ. of Miyazaki), and Suzaku WAM team report
  The bright, long burst, GRB 070508 (Swift/BAT trigger #278854 ; D. Grupe et al., GCN Circ. 6383 ), was detected at 04:18:21 UT (=T0) by the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV. The observed light curve shows multiple peaked structures with a duration (T90) of nearly 12 seconds. The fluence in 100-1000 keV was (3.0+/-0.1) * 10^-5 erg/cm^2. The 1-s peak flux was 11.6+/-0.5 photons/cm^2/s in the same energy range.
  Preliminary result shows that the time-averaged spectrum from T0-4 to T0+26 s can be described by a power law with an exponential cutoff model, in the 100 keV - 1000 keV range as follows:

  dN/dE =  E^{-alpha} * exp(-(2-alpha)*E/Epeak) with
  alpha = 0.96 +/- 0.21 and
  Epeak = 233 +/- 12 keV (chi^2/d.o.f. = 29/20).
  

  All the quoted errors are at statistical 90% confidence level, in which the systematic uncertainties are not included.
  The WAM light curve of this event is available at http://www.astro.isas.ac.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html
• GCN Circular #6398
  Pall Jakobsson (U. Hertfordshire), Johan P. U. Fynbo (DARK, NBI), Michael I. Andersen (Potsdam), Andreas O. Jaunsen (U. Oslo), Christina C. Thoene, Darach Watson, Jens Hjorth, Bo Milvang-Jensen (DARK, NBI), Nial R. Tanvir (U. Leicester) and P. Moller (ESO) report on behalf of a larger collaboration:
  Using FORS1 on the Very Large Telescope, we have obtained 3*30 min spectra (grism 300V) of GRB 070508 (Grupe et al., GCN 6383). The UVOT optical afterglow candidate (Marshall & Grupe, GCN 6392) has clearly faded in our acquisition image. Using photometric zeropoints from the ESO webpages we estimate the afterglow magnitude to be R ~ 22.0 on May 8.337 (3.79 hours post-burst).
  The combined spectrum does not display any obvious absorption features. However, a firm upper limit of z < 2.3 can be placed on the redshift of GRB 070508 from the lack of Ly-alpha forest lines in the spectrum of the afterglow. This is consistent with the UVOT observations (Marshall & Grupe, GCN 6392).
  We do detect a tentative emission line at 6781 A. If it corresponds to H-alpha at z = 0.033, we would expect to detect H-beta and the [O III] doublet in our spectrum. However, no features are visible at their predicted locations. The most probable association is with [O II] 3728, corresponding to a redshift of z = 0.82. We caution that the magnitude reported above is then most likely affected by host galaxy emission.
  We thank the Paranal staff for excellent support.
• GCN Circular #6399
  E. Bellm, C. Wigger, M. Bandstra, S. Boggs, W. Hajdas, D. M. Smith, and K. Hurley on behalf of the RHESSI team report:
  As observed by RHESSI, GRB070508 (Grupe et al., GCN 6383) had a duration of ~18 s starting at about T0=04:18:20 UT. RHESSI detected significant emission up to ~300 keV. The preliminary fit to the time-integrated RHESSI spectrum from T0 - T0+16 s between 30 keV and 10 MeV is a cutoff power law with

  alpha = -0.76 +0.52/-0.41
  Epeak = 254 +71/-45 keV
  (90% confidence levels).
  

  The 30 keV-10 MeV fluence is 1.95 +0.28/-0.23 E-5 erg/cm^2.
• GCN Report 54.1
  GCN_Report 54.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_54_1.pdf by D. Grupe at PSU titled: "Swift observations of GRB 070508"
• GCN Circular #6403
  S. Golenetskii, R.Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, P. Oleynik, M. Ulanov and T. Cline on behalf of the Konus-Wind and Konus-A teams report:
  The long bright GRB 070508 (Swift-BAT trigger #278854: Grupe et al., GCN 6383; Barthelmy et al., GCN 6390), triggered Konus-Wind at T0=15502.779 s UT (04:18:22.779). This burst also triggered Konus-A at T0=15503.790 s UT (04:18:23.790)
  The burst started at T-T0 ~-13 s and had a duration of ~40 s. As observed by Konus-Wind the burst had a fluence of 3.97(-0.23, +0.07)x10^-5 erg/cm2, and a 64-ms peak flux measured from T0+8.832 s 8.30(-1.11, +1.03)x10^-6 erg/cm2/s (both in the 20 keV - 1 MeV energy range). The burst shows strong spectral evolution.
  The time-integrated spectrum of the burst (from T0 to T0+27.904 s) can be fitted (in the 25 keV - 1 MeV range) by a power law with exponential cutoff model: dN/dE ~ E^(-alpha)*exp(-E*(2-alpha)/Ep) with alpha = 0.81 +/- 0.07 and Ep = 188 +/- 8 keV (chi2 = 65/52 dof).
  Assuming z = 0.82 (Jakobsson et al., GCN 6398) and a standard cosmology model with H_0 = 70 km/s/Mpc, Omega_M = 0.3, Omega_\Lambda = 0.7, the isotropic bolometric energy release is E_iso ~7.0x10^52 erg, and the maximum bolometric luminosity is (L_iso)_max ~1.1x10^53 erg/s.
  All the quoted errors are at the 90% confidence level.
  The Konus-Wind light curve of this GRB is available at http://www.ioffe.rssi.ru/LEA/GRBs/GRB070508_T15502/
• GCN Circular #6405
  A. Pelangeon & J-L. Atteia (LATT-OMP) report:
  The intense burst GRB 070508 detected by SWIFT-BAT (Grupe et al., GCNC 6383) was also observed by other spacecrafts. Thanks to the published spectral parameters obtained from the different spectral analyses performed, we have computed 4 pseudo-redshift(**) for this burst.
  Here are the results (the errors on the pseudo-z are at the 90% c.l.):
  - From the spectral parameters obtained with the Konus-WIND data (Golenetskii et al., GCNC 6403) we obtain: pz = 1.15 +/- 0.15
  - From the spectral parameters obtained with the Swift-BAT data (Barthelmy et al., GCNC 6390; Grupe et al., GCNR 54.1) we obtain: pz = 1.06 +/- 0.30
  - From the spectral parameters obtained with the Suzaku-WAM data (Uehara et al., GCNC 6396) we obtain: pz = 1.25 +/- 0.30
  - From the spectral parameters obtained with the RHESSI data (Bellm et al., GCNC 6399) we obtain: pz = 2.53 +/- 1.40
  These values are compatible with the spectroscopic redshift z=0.82 derived by Jakobsson et al. (GCNC 6398).
  (**) cf. http://www.ast.obs-mip.fr/grb/pz
• GCN Report 54.2
  GCN_Report 54.2 has been posted: http://gcn.gsfc.nasa.gov/reports/report_54_2.pdf by D. Grupe at PSU titled: "Final Swift observations of GRB 070508"
• In Fynbo et al. ApJS 185 (2009) 526 the redshift of 0.82 (GCN 6398) is withdrawn, and replaced with an upper limit of z<3.0