Gamma-ray Burst 070529

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 29 May 07 12:49:26 UT
  NOTICE_TYPE:     Swift-BAT GRB Position
  TRIGGER_NUM:     280706,   Seg_Num: 0
  GRB_RA:          283.750d {+18h 55m 00s} (J2000),
                   283.830d {+18h 55m 19s} (current),
                   283.212d {+18h 52m 51s} (1950)
  GRB_DEC:         +20.639d {+20d 38' 21"} (J2000),
                   +20.649d {+20d 38' 56"} (current),
                   +20.574d {+20d 34' 27"} (1950)
  GRB_ERROR:       3.00 [arcmin radius, statistical only]
  GRB_INTEN:       50365 [cnts]    Image_Peak=419 [image_cnts]
  TRIGGER_DUR:     12.160 [sec] 
  TRIGGER_INDEX:   478     E_range: 25-100 keV
  BKG_INTEN:       243391 [cnts]
  BKG_TIME:        46014.01 SOD {12:46:54.01} UT
  BKG_DUR:         64 [sec]
  GRB_DATE:        14249 TJD;   149 DOY;   07/05/29
  GRB_TIME:        46108.34 SOD {12:48:28.34} UT
  GRB_PHI:          44.96 [deg]
  GRB_THETA:        41.15 [deg]
  SOLN_STATUS:     0x83
  RATE_SIGNIF:     12.12 [sigma]
  IMAGE_SIGNIF:    6.76 [sigma]
  MERIT_PARAMS:     +1  +0  +0  +4  +2  +1  +0  +1 +55  +1 
  SUN_POSTN:        66.01d {+04h 24m 02s}  +21.61d {+21d 36' 25"}
  SUN_DIST:        123.87 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      215.94d {+14h 23m 46s}  -18.68d {-18d 40' 41"}
  MOON_DIST:        77.25 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.83,  8.50 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      287.78, 43.23 [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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
  COMMENTS:        This trigger occurred at longitude,latitude = 222.73,-2.86 [deg].  
  

• red DSS finding chart ps-file
  
  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 29 May 07 12:51:08 UT
  NOTICE_TYPE:     Swift-XRT Image
  TRIGGER_NUM:     280706,   Seg_Num: 0
  GRB_RA:          283.7413d {+18h 54m 57.9s} (J2000),
                   283.8211d {+18h 55m 17.0s} (current),
                   283.2027d {+18h 52m 48.6s} (1950)
  GRB_DEC:         +20.6594d {+20d 39' 33.8"} (J2000),
                   +20.6692d {+20d 40' 09.1"} (current),
                   +20.5945d {+20d 35' 40.3"} (1950)
  GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       34 [cnts]
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46239.30 SOD {12:50:39.30} UT,   131.0 [sec] since BAT Trigger Time
  CENTROID_X:      254.51,  raw= 255  [pixels]
  CENTROID_Y:      350.81,  raw= 351  [pixels]
  ROLL:            43.30 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   124.50
  GRB_POS_XRT_Z:   -112.64
  IMAGE_URL:       sw00280706000msxps_rw.img
  SUN_POSTN:        66.01d {+04h 24m 02s}  +21.61d {+21d 36' 25"}
  SUN_DIST:        123.87 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      215.96d {+14h 23m 50s}  -18.68d {-18d 41' 00"}
  MOON_DIST:        77.24 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.85,  8.51 [deg] galactic lon,lat of the burst
  ECL_COORDS:      287.77, 43.25 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 29 May 07 12:51:11 UT
  NOTICE_TYPE:     Swift-XRT Processed Image
  TRIGGER_NUM:     280706,   Seg_Num: 0
  GRB_RA:          283.7413d {+18h 54m 57.9s} (J2000),
                   283.8211d {+18h 55m 17.0s} (current),
                   283.2027d {+18h 52m 48.6s} (1950)
  GRB_DEC:         +20.6594d {+20d 39' 33.8"} (J2000),
                   +20.6692d {+20d 40' 09.1"} (current),
                   +20.5945d {+20d 35' 40.3"} (1950)
  GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       34 [cnts]
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46239.30 SOD {12:50:39.30} UT,   131.0 [sec] since BAT Trigger Time
  CENTROID_X:      254.51,  raw= 255  [pixels]
  CENTROID_Y:      350.81,  raw= 351  [pixels]
  ROLL:            43.30 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   124.50
  GRB_POS_XRT_Z:   -112.64
  IMAGE_URL:       sw00280706000msxps_rw.img
  SUN_POSTN:        66.01d {+04h 24m 02s}  +21.61d {+21d 36' 25"}
  SUN_DIST:        123.87 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      215.96d {+14h 23m 50s}  -18.68d {-18d 41' 00"}
  MOON_DIST:        77.24 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.85,  8.51 [deg] galactic lon,lat of the burst
  ECL_COORDS:      287.77, 43.25 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Processed Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 29 May 07 12:51:07 UT
  NOTICE_TYPE:     Swift-XRT Position
  TRIGGER_NUM:     280706,   Seg_Num: 0
  GRB_RA:          283.7413d {+18h 54m 57.9s} (J2000),
                   283.8211d {+18h 55m 17.0s} (current),
                   283.2027d {+18h 52m 48.6s} (1950)
  GRB_DEC:         +20.6594d {+20d 39' 33.8"} (J2000),
                   +20.6692d {+20d 40' 09.1"} (current),
                   +20.5945d {+20d 35' 40.3"} (1950)
  GRB_ERROR:       5.8 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       7.22e-10 [erg/cm2/sec]
  GRB_SIGNIF:      5.83 [sigma]
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46239.30 SOD {12:50:39.30} UT,   131.0 [sec] since BAT Trigger Time
  TAM[0-3]:        327.57 237.21 261.18 243.49
  AMPLIFIER:       2
  WAVEFORM:        134
  SUN_POSTN:        66.01d {+04h 24m 02s}  +21.61d {+21d 36' 25"}
  SUN_DIST:        123.87 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      215.96d {+14h 23m 50s}  -18.68d {-18d 41' 00"}
  MOON_DIST:        77.24 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.85,  8.51 [deg] galactic lon,lat of the burst
  ECL_COORDS:      287.77, 43.25 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Coordinates.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 29 May 07 12:52:25 UT
  NOTICE_TYPE:     Swift-BAT GRB Lightcurve
  TRIGGER_NUM:     280706,   Seg_Num: 0
  GRB_RA:          283.750d {+18h 55m 00s} (J2000),
                   283.830d {+18h 55m 19s} (current),
                   283.212d {+18h 52m 51s} (1950)
  GRB_DEC:         +20.639d {+20d 38' 21"} (J2000),
                   +20.649d {+20d 38' 56"} (current),
                   +20.574d {+20d 34' 27"} (1950)
  GRB_DATE:        14249 TJD;   149 DOY;   07/05/29
  GRB_TIME:        46108.34 SOD {12:48:28.34} UT
  TRIGGER_INDEX:   478
  GRB_PHI:          44.96 [deg]
  GRB_THETA:        41.15 [deg]
  DELTA_TIME:      6.00 [sec]
  TRIGGER_DUR:     12.160 [sec] 
  SOLN_STATUS:     0x83
  RATE_SIGNIF:     12.12 [sigma]
  IMAGE_SIGNIF:    6.76 [sigma]
  LC_URL:          sw00280706000msb.lc
  SUN_POSTN:        66.01d {+04h 24m 02s}  +21.61d {+21d 36' 26"}
  SUN_DIST:        123.88 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      215.97d {+14h 23m 52s}  -18.69d {-18d 41' 14"}
  MOON_DIST:        77.23 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.83,  8.50 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      287.78, 43.23 [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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
  COMMENTS:        This trigger occurred at longitude,latitude = 222.73,-2.86 [deg].  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 29 May 07 13:01:18 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     280706,   Seg_Num: 0
  POINT_RA:        283.746d {+18h 54m 59s} (J2000)
  POINT_DEC:       +20.612d {+20d 36' 44"} (J2000)
  POINT_ROLL:      43.304d
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46241.80 SOD {12:50:41.80} UT,   133.5 [sec] since BAT Trigger Time
  FILTER:          3, V
  BKG_MEAN:        1.856
  N_STARS:         190
  X_OFFSET:        558 [pixels]
  Y_OFFSET:        242 [pixels]
  X_MAX:           1517 [pixels]
  Y_MAX:           1201 [pixels]
  DET_THRESH:      11
  PHOTO_THRESH:    6
  SL_URL:          sw00280706000msufc0133.fits
  SUN_POSTN:        66.02d {+04h 24m 04s}  +21.61d {+21d 36' 29"}
  SUN_DIST:        123.90 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      216.04d {+14h 24m 10s}  -18.71d {-18d 42' 51"}
  MOON_DIST:        77.17 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.80,  8.49 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      287.77, 43.21 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 29 May 07 13:01:44 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     280706,   Seg_Num: 0
  POINT_RA:        283.746d {+18h 54m 59s} (J2000)
  POINT_DEC:       +20.612d {+20d 36' 44"} (J2000)
  POINT_ROLL:      43.304d
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46241.80 SOD {12:50:41.80} UT,   133.5 [sec] since BAT Trigger Time
  FILTER:          3, V
  BKG_MEAN:        1.856
  N_STARS:         190
  X_OFFSET:        558 [pixels]
  Y_OFFSET:        242 [pixels]
  X_MAX:           1517 [pixels]
  Y_MAX:           1201 [pixels]
  DET_THRESH:      11
  PHOTO_THRESH:    6
  SL_URL:          sw00280706000msufc0133.fits
  SUN_POSTN:        66.02d {+04h 24m 04s}  +21.61d {+21d 36' 29"}
  SUN_DIST:        123.90 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      216.04d {+14h 24m 10s}  -18.72d {-18d 42' 56"}
  MOON_DIST:        77.16 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.80,  8.49 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      287.77, 43.21 [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 29 May 07 13:02:39 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     280706,   Seg_Num: 0
  POINT_RA:        283.746d {+18h 54m 59s} (J2000)
  POINT_DEC:       +20.612d {+20d 36' 44"} (J2000)
  ROLL:            43.304d
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46241.80 SOD {12:50:41.80} UT,   133.5 [sec] since BAT Trigger Time
  FILTER:          3, V
  EXPOSURE_ID:     202135843
  X_OFFSET:        878 [pixels]
  Y_OFFSET:        562 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1038
  Y_GRB_POS:       722
  BINNING_INDEX:   1
  IM_URL:          sw00280706000msuni0133.fits
  SUN_POSTN:        66.02d {+04h 24m 04s}  +21.61d {+21d 36' 30"}
  SUN_DIST:        123.90 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      216.05d {+14h 24m 12s}  -18.72d {-18d 43' 06"}
  MOON_DIST:        77.16 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.80,  8.49 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      287.77, 43.21 [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 29 May 07 13:02:58 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     280706,   Seg_Num: 0
  POINT_RA:        283.746d {+18h 54m 59s} (J2000)
  POINT_DEC:       +20.612d {+20d 36' 44"} (J2000)
  ROLL:            43.304d
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46241.80 SOD {12:50:41.80} UT,   133.5 [sec] since BAT Trigger Time
  FILTER:          3, V
  EXPOSURE_ID:     202135843
  X_OFFSET:        878 [pixels]
  Y_OFFSET:        562 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1038
  Y_GRB_POS:       722
  BINNING_INDEX:   1
  IM_URL:          sw00280706000msuni0133.fits
  SUN_POSTN:        66.02d {+04h 24m 04s}  +21.61d {+21d 36' 30"}
  SUN_DIST:        123.90 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      216.05d {+14h 24m 13s}  -18.72d {-18d 43' 10"}
  MOON_DIST:        77.16 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.80,  8.49 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      287.77, 43.21 [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 29 May 07 13:09:41 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     280706,   Seg_Num: 0
  POINT_RA:        283.744d {+18h 54m 59s} (J2000)
  POINT_DEC:       +20.615d {+20d 36' 53"} (J2000)
  POINT_ROLL:      43.302d
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46972.57 SOD {13:02:52.57} UT,   864.2 [sec] since BAT Trigger Time
  FILTER:          3, V
  BKG_MEAN:        3.726
  N_STARS:         190
  X_OFFSET:        558 [pixels]
  Y_OFFSET:        242 [pixels]
  X_MAX:           1517 [pixels]
  Y_MAX:           1201 [pixels]
  DET_THRESH:      16
  PHOTO_THRESH:    9
  SL_URL:          sw00280706000msufc0864.fits
  SUN_POSTN:        66.02d {+04h 24m 05s}  +21.61d {+21d 36' 32"}
  SUN_DIST:        123.90 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      216.11d {+14h 24m 26s}  -18.74d {-18d 44' 23"}
  MOON_DIST:        77.12 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.81,  8.49 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      287.76, 43.21 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 29 May 07 13:10:10 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     280706,   Seg_Num: 0
  POINT_RA:        283.744d {+18h 54m 59s} (J2000)
  POINT_DEC:       +20.615d {+20d 36' 53"} (J2000)
  POINT_ROLL:      43.302d
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46972.57 SOD {13:02:52.57} UT,   864.2 [sec] since BAT Trigger Time
  FILTER:          3, V
  BKG_MEAN:        3.726
  N_STARS:         190
  X_OFFSET:        558 [pixels]
  Y_OFFSET:        242 [pixels]
  X_MAX:           1517 [pixels]
  Y_MAX:           1201 [pixels]
  DET_THRESH:      16
  PHOTO_THRESH:    9
  SL_URL:          sw00280706000msufc0864.fits
  SUN_POSTN:        66.02d {+04h 24m 05s}  +21.61d {+21d 36' 33"}
  SUN_DIST:        123.90 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      216.11d {+14h 24m 27s}  -18.74d {-18d 44' 29"}
  MOON_DIST:        77.12 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.81,  8.49 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      287.76, 43.21 [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 29 May 07 13:11:35 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     280706,   Seg_Num: 0
  POINT_RA:        283.744d {+18h 54m 59s} (J2000)
  POINT_DEC:       +20.615d {+20d 36' 53"} (J2000)
  ROLL:            43.302d
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46972.57 SOD {13:02:52.57} UT,   864.2 [sec] since BAT Trigger Time
  FILTER:          3, V
  EXPOSURE_ID:     202136574
  X_OFFSET:        877 [pixels]
  Y_OFFSET:        561 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1037
  Y_GRB_POS:       721
  BINNING_INDEX:   1
  IM_URL:          sw00280706000msuni0864.fits
  SUN_POSTN:        66.02d {+04h 24m 06s}  +21.61d {+21d 36' 33"}
  SUN_DIST:        123.90 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      216.12d {+14h 24m 30s}  -18.75d {-18d 44' 44"}
  MOON_DIST:        77.11 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.81,  8.49 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      287.76, 43.21 [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 29 May 07 13:11:49 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     280706,   Seg_Num: 0
  POINT_RA:        283.744d {+18h 54m 59s} (J2000)
  POINT_DEC:       +20.615d {+20d 36' 53"} (J2000)
  ROLL:            43.302d
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46972.57 SOD {13:02:52.57} UT,   864.2 [sec] since BAT Trigger Time
  FILTER:          3, V
  EXPOSURE_ID:     202136574
  X_OFFSET:        877 [pixels]
  Y_OFFSET:        561 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1037
  Y_GRB_POS:       721
  BINNING_INDEX:   1
  IM_URL:          sw00280706000msuni0864.fits
  SUN_POSTN:        66.02d {+04h 24m 06s}  +21.61d {+21d 36' 33"}
  SUN_DIST:        123.91 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      216.13d {+14h 24m 30s}  -18.75d {-18d 44' 47"}
  MOON_DIST:        77.11 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.81,  8.49 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      287.76, 43.21 [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 Circular #6466
  S. T. Holland (CRESST/GSFC/USRA), L. M. Barbier (NASA/GSFC), S. D. Barthelmy (GSFC), P. J. Brown (PSU), S. Campana (INAF-OAB), G. Cusumano (INAF-IASFPA), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), O. Godet (U Leicester), C. Gronwall (PSU), C. Guidorzi (Univ Bicocca&INAF-OAB), H. A. Krimm (GSFC/USRA), V. La Parola (INAF-IASFPA), V. Mangano (INAF-IASFPA), F. E. Marshall (NASA/GSFC), J. P. Osborne (U Leicester), K. L. Page (U Leicester), D. M. Palmer (LANL), P. Romano (Univ. Bicocca & INAF-OAB), G. Sato (GSFC/ISAS), B. Sbarufatti (INAF-IASFPA), R. L. C. Starling (U Leicester), G. Tagliaferri (INAF-OAB), E. Troja (INAF-IASFPA), D. E. Vanden Berk (PSU), S. D. Vergani (DIAS-DCU), L. Vetere (PSU) and H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
  At 12:48:28 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 070529 (trigger=280706). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 283.750, +20.639 which is

     RA(J2000) = 18h 55m 00s
     Dec(J2000) = +20d 38' 21"
  

  with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a multi-peaked structure at least 40 seconds long. The peak count rate was ~1500 counts/sec (15-350 keV), at ~2 sec after the trigger.
  The XRT began observing the field at 12:50:39 UT, 131 seconds after the BAT trigger. XRT found a moderately bright, uncatalogued X-ray source. From downlinked data, we determined the position RA, Dec 283.7427, +20.6586 which is

     RA(J2000)  =  18h 54m 58.26s
     Dec(J2000) =  +20d 39' 31.04"
  

  with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 76 arcseconds from the BAT on-board position, within the BAT error circle. The initial flux in the 2.5s image was 7.2e-10 erg/cm2/s (0.2-10 keV).
  UVOT took a finding chart exposure of 400 seconds with the V filter starting 134 seconds after the BAT trigger. There is an afterglow candidate with V=17.4 mag located at RA, Dec 283.7425, +20.6594 which is

     RA(J2000) = 18h 54m 58.19s     
     Dec(J2000) = 20d 39' 34.0"  with
  

  an uncertainty of 0.5 arcsec (radius, 90% containment). The 2.7'x2.7' sub-image covers 100% of the XRT error circle. No correction has been made for the expected extinction of about 1.0 magnitudes.
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 29 May 07 13:15:15 UT
  NOTICE_TYPE:     Swift-UVOT Position
  TRIGGER_NUM:     280706,   Seg_Num: 0
  GRB_RA:          283.7427d {+18h 54m 58.24s} (J2000),
                   283.8225d {+18h 55m 17.39s} (current),
                   283.2041d {+18h 52m 48.98s} (1950)
  GRB_DEC:         +20.6594d {+20d 39' 33.8"} (J2000),
                   +20.6692d {+20d 40' 09.2"} (current),
                   +20.5945d {+20d 35' 40.3"} (1950)
  GRB_ERROR:       0.4 [arcsec radius, statistical only]
  GRB_MAG:         17.39 +/- 0.50 [mag]
  FILTER:          3, V
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46242.00 SOD {12:50:42.00} UT,   133.7 [sec] since BAT Trigger Time
  SUN_POSTN:        66.03d {+04h 24m 06s}  +21.61d {+21d 36' 35"}
  SUN_DIST:        123.87 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      216.15d {+14h 24m 37s}  -18.76d {-18d 45' 24"}
  MOON_DIST:        77.11 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.85,  8.51 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      287.77, 43.25 [deg] ecliptic lon,lat of the burst (or transient)
  COMMENTS:        SWIFT UVOT Position Notice.  
  COMMENTS:        This Notice was ground-generated -- not flight-generated.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Tue 29 May 07 13:14:53 UT
  NOTICE_TYPE:     Swift-XRT Position
  TRIGGER_NUM:     280706,   Seg_Num: 0
  GRB_RA:          283.7427d {+18h 54m 58.2s} (J2000),
                   283.8225d {+18h 55m 17.3s} (current),
                   283.2041d {+18h 52m 48.9s} (1950)
  GRB_DEC:         +20.6585d {+20d 39' 30.6"} (J2000),
                   +20.6683d {+20d 40' 05.9"} (current),
                   +20.5936d {+20d 35' 37.0"} (1950)
  GRB_ERROR:       3.6 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       4.00e-11 [erg/cm2/sec]
  GRB_SIGNIF:      22.00 [sigma]
  IMG_START_DATE:  14249 TJD;   149 DOY;   07/05/29
  IMG_START_TIME:  46239.30 SOD {12:50:39.30} UT,   131.0 [sec] since BAT Trigger Time
  TAM[0-3]:        327.61 237.19 261.35 242.66
  AMPLIFIER:       2
  WAVEFORM:        134
  SUN_POSTN:        66.03d {+04h 24m 06s}  +21.61d {+21d 36' 34"}
  SUN_DIST:        123.88 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
  MOON_POSTN:      216.15d {+14h 24m 36s}  -18.76d {-18d 45' 20"}
  MOON_DIST:        77.11 [deg]
  MOON_ILLUM:      94 [%]
  GAL_COORDS:       51.85,  8.51 [deg] galactic lon,lat of the burst
  ECL_COORDS:      287.77, 43.25 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Coordinates.  
  COMMENTS:        This Notice was ground-generated -- not flight-generated.  
  COMMENTS:        TAM values are not valid.   
  

• GCN Circular #6467
  Y.Q. Lou, X.F. Wang, L.P. Xin, M.Zhai, Y.L. Qiu, J.Y. Wei, J.Y. Hu, J.S. Deng, Y. Urata, and W.K. Zheng on behalf of EAFON report:
  We have imaged the field of GRB 070529 (Holland et al., GCN 6466) with the Xinglong TNT 80cm telescope. Observation was performed with V and R band. We noticed this was a crowded field and we didn't detect the OT (Holland et al., GCN 6466) in our combined images, the R band 3 sigma upper limit is ~20.1 derived from USNO-B1.0 with mean time 2.03 hours after the burst.
  This message may be cited.
• GCN Circular #6468
  A. Parsons (GSFC), L. Barbier (GSFC), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), S. T. Holland (CRESST/GSFC/USRA), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), T. Sakamoto (GSFC/ORAU), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU) on behalf of the Swift-BAT team:
  Using the data set from T-119 to T+283 sec from the recent telemetry downlink, we report further analysis of BAT GRB 070529 (trigger #280706) (Holland, et al., GCN Circ. 6466). The BAT ground-calculated position is RA, Dec = 283.725, 20.648 deg which is

     RA(J2000)  = 18h 54m 54.0s 
     Dec(J2000) = 20d 38' 54" 
  

  with an uncertainty of 1.9 arcmin, (radius, sys+stat, 90% containment). The partial coding was 16%.
  The mask-weighted lightcurve shows multiple overlapping peaks starting at T_0 and lasting out T+120 sec. There is a possible (~4 sigma) 10-sec peak at ~T-55 sec. T90 (15-350 keV) is 109 +- 3 sec (estimated error including systematics).
  The time-averaged spectrum from T-1.2 to T+120.9 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.38 +- 0.16. The fluence in the 15-150 keV band is 2.6 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+2.02 sec in the 15-150 keV band is 1.4 +- 0.4 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
• GCN Circular #6469
  V. Mangano, B. Sbarufatti, V. La Parola (INAF-IASFPA), S. T. Holland (CRESST/USRA/GSFC) report on behalf of the Swift XRT team:
  We have analysed the first two orbits of XRT data of GRB 070529 (Holland et al., GCN Circ. 6466) with total exposure time of 3.6 ks in Photon Counting mode. The XRT position calculated on the second orbit data only, in order to avoid pile-up effects is:

  RA(J2000)  =3D 18h 54m 58.2s
  Dec(J2000) =3D 20d 39' 31.5"
  

  with an uncertainty of 3.8 arcsec (radius, 90% containment). This is 0.9 arcsec from the initial X-ray position, 69 arcsec from the BAT refined position (Parsons et al., GCN Circ. 6468), and 2.3 arcsec from the UVOT position (Holland et al., GCN Circ. 6466).
  The XRT light curve follows a power-law decay with index 0.91 =B1 0.05 up to T+7 ks.
  We extracted a spectrum of the PC data which can be fitted with an absorbed power law with photon index of 2.2 =B1 0.2 and column density of (3.5+/-0.8) E21 cm-2, slightly in excess with respect to the Galactic absorption column (1.9E21 cm-2; Dickey & Lockman, 1990).
  The absorbed (unabsorbed) 0.3-10.0 keV average flux in the T+150 s - T+7 ks time interval is 1.6E-11 (2.8E-11) ergs cm-2 s-1.
  Assuming that the source continues its decay at the present rate, we predict an XRT count rate of 8.6E-3 counts/s at T+24 h, which corresponds to an observed flux of 7E-13 ergs cm-2 s-1.
  This circular is an official product of the Swift XRT team.
• GCN Circular #6470
  E. Berger (Carnegie), D. B. Fox and A. Cucchiara (Penn State) report:
  "Starting on 2007 May 29.59 UT we used GMOS on the Gemini North telescope to obtain a 900 sec spectrum of the afterglow of GRB 050729 (GCN 6466). The spectrum covers the wavelength range 5000-7900A. We find several strong absorption features corresponding to CIV, SiII, FeII, AlII, AlIII, etc. at a redshift of z=2.4996, which we identify as the redshift of the burst. At this redshift the observed fluence of 2.6e-6 erg/cm^2 (GCN 6468) translates to an isotropic equivalent energy of 3.8e52 erg."
• GCN Circular #6471
  K.S. Baliyan, S. Ganesh and Priyanksha (MIRO-PRL, Ahmedabad, India) report:
  We observed the field around the location of GRB070529 (18h 54m 58.19s, 20d 39' 34.0"), BAT trigger no. 280706, at 14:48:28 UT as reported by S. T. Holland on behalf of the Swift Team (GCN 6466).
  We started observations at 18:10:08 UT with 1296*1152 CCD mounted on the 1.2 M telescope of the Mt. Abu IR Observatory, Gurushikhar, Mount Abu, Rajasthan, operated by Physical Research Laboratory, Ahmedabad- India, in VR bands. A total of 12 images of 180 seconds exposure in R and 5 images in V band were taken. The visual inspection shows a very faint source near the above location in a very crowded field. Details will be reported after proper analysis of all the images.
  The message may be cited.
• GCN Circular #6472
  H. Swan (U Mich), I. Smith (Rice), C. Akerlof (U Mich), and M. Skinner (Boeing) report on behalf of the MARGE collaboration:
  The AEOS Burst Camera (ABC) on the AEOS telescope, located at the Maui Space Surveillance System on Haleakala, observed the fading counterpart to GRB070529 (Swift trigger 280706 (GCN 6466)). The images are unfiltered 10s exposures which started less than 30 minutes after the trigger and ended ~ 2 hours later.
  We detect the OT first identified by S. T. Holland et al (GCN 6466). A preliminary analysis gives a magnitude of approximately 19.41 +/-0.04 at 13:20:35 UT. We calibrated the OT to the USNO-B1.0 R2 band magnitude of the nearby 17.35 mag star located at (J2000) RA = 283.73991, DEC = 20.657206. We find that the ABC data fades as a power law decay with index ~-1.1.
  Further analysis is in progress.
• GCN Circular #6473
  M. De Pasquale (MSSL/UCL) and S. T. Holland (CRESST/USRA/GSFC) report, on the behalf of Swift UVOT team:
  The Swift Ultraviolet/Optical telescope (UVOT) began its initial V-band finding chart exposure of GRB070529 (Holland et al., GCN circ. 6466) 134 seconds after the trigger and the optical afterglow is clearly detected inside the refined XRT error circle (Mangano et al., GCN circ. 6469). Successively, the optical source appears to fade with a decay slope, based on the V band datapoints, of about -1.8.
  In the following table, we report the magnitudes and 3 sigma upper limits for this source. Errors are at 1 sigma level.

    Filter      Time (s)    Exp(s)        Mag
  
     V          134-534      393      17.1 +/- 0.1
  
     V          652-1253     420      19.3 +/- 0.4
  
     V        40339-47072   2039         > 20.4
  
     B          613-758      20          > 18.8
  
     U          588-6277    439          > 20.1
  
    UW1         564-7038    459          > 20.5
  
    UM2         540-7038    592          > 20.8
  
    UW2         628-6687    432          > 21.0
  

  No observation was performed in the white filter, due to the crowded field.
  No correction has been made for the considerable Galactic reddening toward the burst, E(B-V)=0.3 (Schlegel et al. 1998).
• GCN Circular #6474
  A. C. Updike and D. H. Hartmann (Clemson University) report on behalf of the Clemson GRB Follow-Up Team:
  We observed the field of GRB 070529 (GCN 6466, Holland et al.) with the 0.9m SARA telescope at KPNO. Under decent weather conditions, we imaged the field from 06:14:58 UT, 17 hours and 26 minutes after the burst, until 07:52:12 UT. We obtained a total of 50 min of R-band exposures. In the stacked image at the location of the afterglow identified in UVOT observations (GCN 6466), we detect no new object to a limiting magnitude of R = 19.0 +/- 0.2.
  The SARA Homepage can be found at: http://saraobservatory.org
  This message may be cited.
• GCN Report 61.1
  GCN_Report 61.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_61_1.pdf by S.T. Holland at CRESST/USRA/GSFC titled: "Swift observations of GRB 070529"
• GCN Report 61.2
  GCN_Report 61.2 has been posted: http://gcn.gsfc.nasa.gov/reports/report_61_2.pdf by S.T. Holland at CREEST/USRA/GSFC titled: "Final Swift observations of GRB 070529"