Gamma-ray Burst 060604

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sun 04 Jun 06 18:19:54 UT
  NOTICE_TYPE:     Swift-BAT GRB Position
  TRIGGER_NUM:     213486,   Seg_Num: 0
  GRB_RA:          337.242d {+22h 28m 58s} (J2000),
                   337.327d {+22h 29m 18s} (current),
                   336.580d {+22h 26m 19s} (1950)
  GRB_DEC:         -10.905d {-10d 54' 17"} (J2000),
                   -10.872d {-10d 52' 18"} (current),
                   -11.161d {-11d 09' 39"} (1950)
  GRB_ERROR:       3.00 [arcmin radius, statistical only]
  GRB_INTEN:       18855 [cnts]    Image_Peak=345 [image_cnts]
  TRIGGER_DUR:     4.096 [sec] 
  TRIGGER_INDEX:   448     E_range: 15-50 keV
  BKG_INTEN:       169944 [cnts]
  BKG_TIME:        65886.76 SOD {18:18:06.76} UT
  BKG_DUR:         40 [sec]
  GRB_DATE:        13890 TJD;   155 DOY;   06/06/04
  GRB_TIME:        65940.01 SOD {18:19:00.01} UT
  GRB_PHI:         148.85 [deg]
  GRB_THETA:        25.12 [deg]
  SOLN_STATUS:     0x83
  RATE_SIGNIF:     12.48 [sigma]
  IMAGE_SIGNIF:    6.78 [sigma]
  MERIT_PARAMS:     +1  +0  +0  +2  +1  +2  +0  +0 +15  +1 
  SUN_POSTN:        72.63d {+04h 50m 32s}  +22.48d {+22d 28' 40"}
  SUN_DIST:         98.98 [deg]   Sun_angle= 6.4 [hr] (West of Sun)
  MOON_POSTN:      173.60d {+11h 34m 25s}   +3.64d {+03d 38' 31"}
  MOON_DIST:       162.32 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:       51.82,-52.82 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      334.92, -1.29 [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 = 239.29,8.97 [deg].  
  

• red DSS finding chart ps-file
  
  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sun 04 Jun 06 18:21:37 UT
  NOTICE_TYPE:     Swift-XRT Image
  TRIGGER_NUM:     213486,   Seg_Num: 0
  GRB_RA:          337.2289d {+22h 28m 54.9s} (J2000),
                   337.3139d {+22h 29m 15.3s} (current),
                   336.5671d {+22h 26m 16.0s} (1950)
  GRB_DEC:         -10.9175d {-10d 55' 03.0"} (J2000),
                   -10.8845d {-10d 53' 04.2"} (current),
                   -11.1736d {-11d 10' 24.8"} (1950)
  GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       104 [cnts]
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66048.84 SOD {18:20:48.84} UT,   108.8 [sec] since BAT Trigger Time
  CENTROID_X:      366.23,  raw= 366  [pixels]
  CENTROID_Y:      276.64,  raw= 277  [pixels]
  ROLL:            68.66 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   -52.22
  GRB_POS_XRT_Z:   153.07
  IMAGE_URL:       sw00213486000msxps_rw.img
  SUN_POSTN:        72.63d {+04h 50m 32s}  +22.48d {+22d 28' 41"}
  SUN_DIST:         98.99 [deg]   Sun_angle= 6.4 [hr] (West of Sun)
  MOON_POSTN:      173.62d {+11h 34m 28s}   +3.64d {+03d 38' 07"}
  MOON_DIST:       162.29 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:       51.79,-52.81 [deg] galactic lon,lat of the burst
  ECL_COORDS:      334.90, -1.29 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sun 04 Jun 06 18:21:51 UT
  NOTICE_TYPE:     Swift-XRT Processed Image
  TRIGGER_NUM:     213486,   Seg_Num: 0
  GRB_RA:          337.2289d {+22h 28m 54.9s} (J2000),
                   337.3139d {+22h 29m 15.3s} (current),
                   336.5671d {+22h 26m 16.0s} (1950)
  GRB_DEC:         -10.9175d {-10d 55' 03.0"} (J2000),
                   -10.8845d {-10d 53' 04.2"} (current),
                   -11.1736d {-11d 10' 24.8"} (1950)
  GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       104 [cnts]
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66048.84 SOD {18:20:48.84} UT,   108.8 [sec] since BAT Trigger Time
  CENTROID_X:      366.23,  raw= 366  [pixels]
  CENTROID_Y:      276.64,  raw= 277  [pixels]
  ROLL:            68.66 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   -52.22
  GRB_POS_XRT_Z:   153.07
  IMAGE_URL:       sw00213486000msxps_rw.img
  SUN_POSTN:        72.63d {+04h 50m 32s}  +22.48d {+22d 28' 41"}
  SUN_DIST:         98.99 [deg]   Sun_angle= 6.4 [hr] (West of Sun)
  MOON_POSTN:      173.62d {+11h 34m 28s}   +3.63d {+03d 38' 04"}
  MOON_DIST:       162.29 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:       51.79,-52.81 [deg] galactic lon,lat of the burst
  ECL_COORDS:      334.90, -1.29 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Processed Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sun 04 Jun 06 18:21:34 UT
  NOTICE_TYPE:     Swift-XRT Position
  TRIGGER_NUM:     213486,   Seg_Num: 0
  GRB_RA:          337.2289d {+22h 28m 54.9s} (J2000),
                   337.3139d {+22h 29m 15.3s} (current),
                   336.5671d {+22h 26m 16.0s} (1950)
  GRB_DEC:         -10.9175d {-10d 55' 03.0"} (J2000),
                   -10.8845d {-10d 53' 04.2"} (current),
                   -11.1736d {-11d 10' 24.8"} (1950)
  GRB_ERROR:       4.7 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       2.93e-09 [erg/cm2/sec]
  GRB_SIGNIF:      10.19 [sigma]
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66048.84 SOD {18:20:48.84} UT,   108.8 [sec] since BAT Trigger Time
  TAM[0-3]:        327.60 237.22 261.22 243.09
  AMPLIFIER:       2
  WAVEFORM:        134
  SUN_POSTN:        72.63d {+04h 50m 32s}  +22.48d {+22d 28' 41"}
  SUN_DIST:         98.99 [deg]   Sun_angle= 6.4 [hr] (West of Sun)
  MOON_POSTN:      173.62d {+11h 34m 28s}   +3.64d {+03d 38' 08"}
  MOON_DIST:       162.29 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:       51.79,-52.81 [deg] galactic lon,lat of the burst
  ECL_COORDS:      334.90, -1.29 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Coordinates.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sun 04 Jun 06 18:24:06 UT
  NOTICE_TYPE:     Swift-BAT GRB Lightcurve
  TRIGGER_NUM:     213486,   Seg_Num: 0
  GRB_RA:          337.242d {+22h 28m 58s} (J2000),
                   337.327d {+22h 29m 18s} (current),
                   336.580d {+22h 26m 19s} (1950)
  GRB_DEC:         -10.905d {-10d 54' 17"} (J2000),
                   -10.872d {-10d 52' 18"} (current),
                   -11.161d {-11d 09' 39"} (1950)
  GRB_DATE:        13890 TJD;   155 DOY;   06/06/04
  GRB_TIME:        65940.01 SOD {18:19:00.01} UT
  TRIGGER_INDEX:   448
  GRB_PHI:         148.85 [deg]
  GRB_THETA:        25.12 [deg]
  DELTA_TIME:      -44.00 [sec]
  TRIGGER_DUR:     4.096 [sec] 
  SOLN_STATUS:     0x83
  RATE_SIGNIF:     12.48 [sigma]
  IMAGE_SIGNIF:    6.78 [sigma]
  LC_URL:          sw00213486000msb.lc
  SUN_POSTN:        72.64d {+04h 50m 33s}  +22.48d {+22d 28' 42"}
  SUN_DIST:         98.98 [deg]   Sun_angle= 6.4 [hr] (West of Sun)
  MOON_POSTN:      173.63d {+11h 34m 32s}   +3.63d {+03d 37' 32"}
  MOON_DIST:       162.29 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:       51.82,-52.82 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      334.92, -1.29 [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 = 239.29,8.97 [deg].  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sun 04 Jun 06 18:27:45 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     213486,   Seg_Num: 0
  POINT_RA:        337.264d {+22h 29m 03s} (J2000)
  POINT_DEC:       -10.888d {-10d 53' 16"} (J2000)
  POINT_ROLL:      68.660d
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66057.45 SOD {18:20:57.45} UT,   117.4 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        5.599
  N_STARS:         35
  X_OFFSET:        320 [pixels]
  Y_OFFSET:        688 [pixels]
  X_MAX:           1279 [pixels]
  Y_MAX:           1647 [pixels]
  DET_THRESH:      20
  PHOTO_THRESH:    12
  SL_URL:          sw00213486000msufc0117.fits
  SUN_POSTN:        72.64d {+04h 50m 33s}  +22.48d {+22d 28' 43"}
  SUN_DIST:         98.96 [deg]   Sun_angle= 6.4 [hr] (West of Sun)
  MOON_POSTN:      173.66d {+11h 34m 38s}   +3.61d {+03d 36' 41"}
  MOON_DIST:       162.28 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:       51.86,-52.83 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      334.95, -1.28 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sun 04 Jun 06 18:28:45 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     213486,   Seg_Num: 0
  POINT_RA:        337.264d {+22h 29m 03s} (J2000)
  POINT_DEC:       -10.888d {-10d 53' 16"} (J2000)
  POINT_ROLL:      68.660d
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66057.45 SOD {18:20:57.45} UT,   117.4 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        5.599
  N_STARS:         35
  X_OFFSET:        320 [pixels]
  Y_OFFSET:        688 [pixels]
  X_MAX:           1279 [pixels]
  Y_MAX:           1647 [pixels]
  DET_THRESH:      20
  PHOTO_THRESH:    12
  SL_URL:          sw00213486000msufc0117.fits
  SUN_POSTN:        72.64d {+04h 50m 34s}  +22.48d {+22d 28' 43"}
  SUN_DIST:         98.96 [deg]   Sun_angle= 6.4 [hr] (West of Sun)
  MOON_POSTN:      173.67d {+11h 34m 40s}   +3.61d {+03d 36' 27"}
  MOON_DIST:       162.27 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:       51.86,-52.83 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      334.95, -1.28 [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:     Sun 04 Jun 06 18:29:18 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     213486,   Seg_Num: 0
  POINT_RA:        337.264d {+22h 29m 03s} (J2000)
  POINT_DEC:       -10.888d {-10d 53' 16"} (J2000)
  ROLL:            68.660d
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66057.45 SOD {18:20:57.45} UT,   117.4 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     171138058
  X_OFFSET:        646 [pixels]
  Y_OFFSET:        1003 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       806
  Y_GRB_POS:       1163
  BINNING_INDEX:   1
  IM_URL:          sw00213486000msuni0117.fits
  SUN_POSTN:        72.64d {+04h 50m 34s}  +22.48d {+22d 28' 43"}
  SUN_DIST:         98.96 [deg]   Sun_angle= 6.4 [hr] (West of Sun)
  MOON_POSTN:      173.67d {+11h 34m 41s}   +3.61d {+03d 36' 20"}
  MOON_DIST:       162.27 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:       51.86,-52.83 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      334.95, -1.28 [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:     Sun 04 Jun 06 18:30:07 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     213486,   Seg_Num: 0
  POINT_RA:         17.668d {+01h 10m 40s} (J2000)
  POINT_DEC:       -50.655d {-50d 39' 18"} (J2000)
  POINT_ROLL:      44.803d
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66162.70 SOD {18:22:42.70} UT,   222.7 [sec] since BAT Trigger Time
  FILTER:          3, V
  BKG_MEAN:        0.783
  N_STARS:         16
  X_OFFSET:        245 [pixels]
  Y_OFFSET:        785 [pixels]
  X_MAX:           1204 [pixels]
  Y_MAX:           1744 [pixels]
  DET_THRESH:      8
  PHOTO_THRESH:    3
  SL_URL:          sw00213486000msufc0222.fits
  SUN_POSTN:        72.64d {+04h 50m 34s}  +22.48d {+22d 28' 43"}
  SUN_DIST:         87.62 [deg]   Sun_angle= 3.7 [hr] (West of Sun)
  MOON_POSTN:      173.68d {+11h 34m 43s}   +3.60d {+03d 36' 08"}
  MOON_DIST:       128.81 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:      295.37,-66.19 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      347.76,-51.82 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sun 04 Jun 06 18:31:27 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     213486,   Seg_Num: 0
  POINT_RA:         17.668d {+01h 10m 40s} (J2000)
  POINT_DEC:       -50.655d {-50d 39' 18"} (J2000)
  ROLL:            44.803d
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66162.70 SOD {18:22:42.70} UT,   222.7 [sec] since BAT Trigger Time
  FILTER:          3, V
  EXPOSURE_ID:     171138163
  X_OFFSET:        565 [pixels]
  Y_OFFSET:        1105 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       725
  Y_GRB_POS:       1265
  BINNING_INDEX:   1
  IM_URL:          sw00213486000msuni0222.fits
  SUN_POSTN:        72.64d {+04h 50m 34s}  +22.48d {+22d 28' 44"}
  SUN_DIST:         87.62 [deg]   Sun_angle= 3.7 [hr] (West of Sun)
  MOON_POSTN:      173.69d {+11h 34m 45s}   +3.60d {+03d 35' 49"}
  MOON_DIST:       128.81 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:      295.37,-66.19 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      347.76,-51.82 [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:     Sun 04 Jun 06 18:32:32 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     213486,   Seg_Num: 0
  POINT_RA:         17.668d {+01h 10m 40s} (J2000)
  POINT_DEC:       -50.655d {-50d 39' 18"} (J2000)
  ROLL:            44.803d
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66162.70 SOD {18:22:42.70} UT,   222.7 [sec] since BAT Trigger Time
  FILTER:          3, V
  EXPOSURE_ID:     171138163
  X_OFFSET:        565 [pixels]
  Y_OFFSET:        1105 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       725
  Y_GRB_POS:       1265
  BINNING_INDEX:   1
  IM_URL:          sw00213486000msuni0222.fits
  SUN_POSTN:        72.64d {+04h 50m 34s}  +22.48d {+22d 28' 44"}
  SUN_DIST:         87.62 [deg]   Sun_angle= 3.7 [hr] (West of Sun)
  MOON_POSTN:      173.69d {+11h 34m 47s}   +3.59d {+03d 35' 34"}
  MOON_DIST:       128.81 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:      295.37,-66.19 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      347.76,-51.82 [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_catalog_image.fits.gz file does not exist; skipping the attachment.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sun 04 Jun 06 18:30:33 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     213486,   Seg_Num: 0
  POINT_RA:        337.264d {+22h 29m 03s} (J2000)
  POINT_DEC:       -10.888d {-10d 53' 16"} (J2000)
  ROLL:            68.660d
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66057.45 SOD {18:20:57.45} UT,   117.4 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     171138058
  X_OFFSET:        646 [pixels]
  Y_OFFSET:        1003 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       806
  Y_GRB_POS:       1163
  BINNING_INDEX:   1
  IM_URL:          sw00213486000msuni0117.fits
  SUN_POSTN:        72.64d {+04h 50m 34s}  +22.48d {+22d 28' 43"}
  SUN_DIST:         98.96 [deg]   Sun_angle= 6.4 [hr] (West of Sun)
  MOON_POSTN:      173.68d {+11h 34m 43s}   +3.60d {+03d 36' 02"}
  MOON_DIST:       162.26 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:       51.86,-52.83 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      334.95, -1.28 [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:     Sun 04 Jun 06 18:32:12 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     213486,   Seg_Num: 0
  POINT_RA:         17.668d {+01h 10m 40s} (J2000)
  POINT_DEC:       -50.655d {-50d 39' 18"} (J2000)
  POINT_ROLL:      44.803d
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66162.70 SOD {18:22:42.70} UT,   222.7 [sec] since BAT Trigger Time
  FILTER:          3, V
  BKG_MEAN:        0.783
  N_STARS:         16
  X_OFFSET:        245 [pixels]
  Y_OFFSET:        785 [pixels]
  X_MAX:           1204 [pixels]
  Y_MAX:           1744 [pixels]
  DET_THRESH:      8
  PHOTO_THRESH:    3
  SL_URL:          sw00213486000msufc0222.fits
  SUN_POSTN:        72.64d {+04h 50m 34s}  +22.48d {+22d 28' 44"}
  SUN_DIST:         87.62 [deg]   Sun_angle= 3.7 [hr] (West of Sun)
  MOON_POSTN:      173.69d {+11h 34m 46s}   +3.59d {+03d 35' 39"}
  MOON_DIST:       128.81 [deg]
  MOON_ILLUM:      58 [%]
  GAL_COORDS:      295.37,-66.19 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      347.76,-51.82 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Source List.  
  COMMENTS:        If you have elected to receive attachments:  
  COMMENTS:        The uvot_catalog_srclist.fits.gz file does not exist; skipping the attachment.  
  

  
• GCN Circular #5212
  M. J. Page (UCL-MSSL), A. J. Blustin (UCL-MSSL), J. R. Cummings (NASA/ORAU), N. Gehrels (NASA/GSFC), O. Godet (U Leicester), J. A. Kennea (PSU), K. M. McLean (LANL/UTD), K. L. Page (U Leicester), G. Sato (GSFC/JSPS/USRA) and M. Stamatikos (NASA/ORAU) report on behalf of the Swift Team:
  At 18:19:00 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 060604 (trigger=213486). Swift slewed immediately to the burst. The BAT on-board calculated location is RA,Dec 337.242, -10.905 {22h 28m 58s, -10d 54' 17"} (J2000) with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single FRED peak with a duration of about 8 sec. The peak count rate was ~1000 counts/sec (15-350 keV), at ~3 sec after the trigger.
  The XRT began observing the field at 18:20:48 UT, 109 seconds after the BAT trigger. XRT found a variable, uncatalogued X-ray source located at RA(J2000) = 22h 28m 54.9s, Dec(J2000) = -10d 55' 03.0", with an estimated uncertainty of 4.7 arcseconds (90% confidence radius). During the first 100s of data, the source shows bright flaring activity. This location is 65 arcseconds from the BAT on-board position, within the BAT error circle. The initial flux in the 2.5s image was 2.9e-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 117 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at (RA,DEC) (J2000) of (337.2292,-10.9155) or (22h28m55.01s,-10o54'55.8") with a 1-sigma error radius of about 0.6 arc sec. This position is 7.2 arc sec. from the center of the XRT error circle. The estimated magnitude is 18.0 with a 1-sigma error of about 0.5 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.04.
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sun 04 Jun 06 18:51:27 UT
  NOTICE_TYPE:     Swift-UVOT Position
  TRIGGER_NUM:     213486,   Seg_Num: 0
  GRB_RA:          337.2293d {+22h 28m 55.0s} (J2000),
                   337.3143d {+22h 29m 15.4s} (current),
                   336.5675d {+22h 26m 16.1s} (1950)
  GRB_DEC:         -10.9155d {-10d 54' 55.7"} (J2000),
                   -10.8825d {-10d 52' 57.0"} (current),
                   -11.1716d {-11d 10' 17.6"} (1950)
  GRB_ERROR:       0.4 [arcsec radius, statistical only]
  GRB_MAG:         18.00 +/- 0.50 [mag] 
  FILTER:          10, White     
  IMG_START_DATE:  13890 TJD;   155 DOY;   06/06/04
  IMG_START_TIME:  66057.00 SOD {18:20:57.00} UT,   117.0 [sec] since BAT Trigger Time
  SUN_POSTN:        72.66d {+04h 50m 37s}  +22.48d {+22d 28' 49"}
  SUN_DIST:         99.01 [deg]   Sun_angle= 6.4 [hr] (West of Sun)
  MOON_POSTN:      173.83d {+11h 35m 20s}   +3.52d {+03d 31' 10"}
  MOON_DIST:       162.05 [deg]  
  MOON_ILLUM:      58 [%]
  GAL_COORDS:       51.79,-52.81 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      334.91, -1.29 [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 #5213
  B. E. Schaefer (Louisiana State) reports on behalf of the ROTSE collaboration:
  ROTSE-IIIa, located at Siding Spring Observatory, Australia, responded to GRB 060604A (Swift trigger 213486), producing images beginning 5.0 s after the GCN notice time. An automated response took the first image at 18:19:59.1 UT, 59.0 s after the burst, under excellent conditions. We took 10 5-sec, 10 20-sec and 20 60-sec eposures, with more ongoing. These unfiltered images are calibrated relative to USNO A2.0 (R).
  Comparison to the DSS (second epoch) reveals no new sources within the 3-sigma error circle, for both single images and coadding into sets of 10; the field is not crowded. The XRT position and the UVOT position (M. J. Page et al. 2006, GCN 5212) has two faint stars nearby which might mask the fast fading optical transient. Individual images have limiting magnitudes ranging from 15.2-16.9; we set the following specific limits.

  start UT       end UT      t_exp(s)   mlim   t_start-tGRB(s)  Coadd?
  --------------------------------------------------------------------
  18:19:59.1   18:20:19.1        20     15.8           59.0       N
  18:29:37.6   18:41:55.8       738     17.9          637.5       Y
  

• GCN Circular #5214
  A. Parsons (GSFC), L. Barbier (GSFC), S. Barthelmy (GSFC), J. Cummings (GSFC/ORAU), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (BYU-Idaho), H. Krimm (GSFC/USRA), M. Koss (GSFC/UMD), C. Markwardt (GSFC/UMD), D. Palmer (LANL), T. Sakamoto (GSFC/ORAU), G. Sato (GSFC/JSPS/USRA), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), on behalf of the Swift-BAT team:
  Using the data set from T-119.2 to T+182.9 sec from the recent telemetry downlink, we report further analysis of BAT GRB 060604 (trigger #213486) (Page, et al., GCN 5212). The BAT ground-calculated position is (RA,Dec) 337.233, -10.937 deg {22h 28m 55.8s, -10d 56' 14.8"} (J2000) +- 2.9 arcmin, (radius, sys+stat, 90% containment). The partial coding was 72%.
  The burst was very weak in BAT. There was some low-level soft emission over ~25 seconds starting at T-50, followed by the main peak at T+0. T90 (15-350 keV) is 10 +- 3 sec (estimated error including systematics).
  The time-averaged spectrum from T-1.4 to T+8.3 is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.90 +- 0.41. The fluence in the 15-150 keV band is 1.3 +- 0.3 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+2.28 sec in the 15-150 keV band is 0.6 +- 0.1 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
• GCN Circular #5215
  K.L. Page, E. Rol (U. Leicester) and M.J. Page (UCL-MSSL) report on behalf of the Swift-XRT team:
  We have analysed the first 3 orbits of X-ray data obtained for GRB 060604 (BAT trigger 213486). Using 5.1 ks of Photon Counting (PC) mode data, we find a refined position of:

  RA(J2000)  =  22 28 54.97
  Dec(J2000) = -10 54 59.9
  

  with an uncertainty of 3.7 arcsec (90% containment). This is 3.3 and 4.1 arcsec from the on-board XRT and UVOT positions respectively (GCN 5212; Page et al.) and 74.6 arcsec from the ground-calculated BAT position given in GCN 5214 by Parsons et al.
  The source was at a high enough count-rate to remain in Windowed Timing (WT) mode for the whole of the (short) first orbit (117-255 seconds after the trigger). During this time, the light-curve shows two strong flares, peaking at ~137 and ~172 seconds after the burst. Underlying these flares is a steep decay of alpha_1 = 3.07 +/- 0.20. Between the end of the WT data and the start of the second orbit of (PC) data, there is a break to a much shallower slope of alpha_2 = 0.48 +/- 0.20.
  The WT flares show clear spectral evolution. The later PC data are well fitted by a single power-law with Gamma = 1.89 +/- 0.14, with no evidence for excess NH above the Galactic value of 4.57e20 cm^-2. (The 90% upper limit for any excess is 7e20 cm^-2.)
  Assuming the shallow decay contines, at 24 hours the count rate is predicted to be 0.030 count s^-1, corresponding to an observed (unabsorbed) flux of 1.40e-12 (1.57e-12) erg cm^-2 s^-1.
  This circular is an official product of the Swift-XRT team.
• GCN Circular #5216
  N. Tanvir (U. of Hertfordshire), E. Rol (U. of Leicester) and P. Hewett (IoA, Cambridge) report:
  We imaged the Swift detected burst GRB 060604 (Page et al. GCN 5212) with the AUX-port camera on the WHT at June 5.169 UT. A 300s R-band exposure shows a source at the position of the UVOT counterpart which has apparently faded, thus confirming the afterglow ID.
  By comparison with the two nearby USNO stars, we estimate a magnitude of R=21.4 with an uncertainty (given the rough calibration) of 0.3 mag.
• GCN Circular #5218
  A. J. Castro-Tirado, P. Amado (IAA-CSIC Granada), I. Negueruela (U. de Alicante), J. Gorosabel, M. Jel=EDnek and A. de Ugarte Postigo (IAA-CSIC),
  report:
  "We have observed the optical afterglow of GRB 060604 (Page et al. GCN Circ. 5212) with the 2.5m Nordic Optical telescope (+ALFOSC) at Observatorio del Roque de los Muchachos (La Palma). Observations consisted of a 150 s V-band exposure with showed a faint object at the location of the proposed Swift/UVOT candidate, in agreement with Tanvir et al. (GCN Circ. 5216), plus a 1200 s exposure spectrum covering the range 3200-9100 A with the grism#4. Based on the presence of a strong continuum break around 4475 A which we identify as due to Ly-alpha, we estimate a redshift of z = 2.68. Further analysis is in progress"
  This message is citeable.
• GCN Circular #5219
  A. J. Blustin (UCL-MSSL) and M. J. Page (UCL-MSSL) report on behalf of the Swift/UVOT team:
  The Swift/UVOT began observing the field of GRB060604 at 18:20:39 on 2006-06-04, 100 s after the BAT trigger (Page et al., GCN 5212). The afterglow candidate at the position reported by Page et al. (GCN 5212) was detected at greater than 2 sigma significance in the V, B, U, UVW1 and White filters. Magnitudes and 3-sigma upper limits from co-added images in the colour filters, and from two single images in the White filter, are given below. The weak detection in the UVW1 band is consistent with the tentative redshift of 2.68 reported by Castro-Tirado et al. (GCN 5218).

  Filter  T_range(s)  Exposure(s)  Mag/3sig_UL     Significance (sigma)
  V       100-10165   1127         21.2 +/- 0.6    2.4
  B       4086-23420  1956         21.2 +/- 0.2    5.8
  U       3881-29206  2705         21.1 +/- 0.2    4.4
  UVW1    3677-28601  2900         22.1 +/- 0.4    2.8
  UVM2    3472-27694  2139         21.1 (3sig_UL)
  UVW2    4496-6061   321          19.8 (3sig_UL)
  
  White   117-217     98           18.3 +/- 0.1    13.4
  White   4290-4490   190          20.5 +/- 0.3    3.9
  

  These magnitudes are uncorrected for Galactic extinction (E(B-V) = 0.043).
• GCN Circular #5253
  Peter Garnavich and Agata Karska (Notre Dame)
  We observed the position of GRB 060604 (Page et al., GCN 5212) with the Vatican Advanced Technology Telescope and 2KCCD camera on 2006 June 5.45 UT (16.5 hours after the burst). Six R-band images, each with an exposure time of 120s, were combined and a source detected at the Swift/UVOT position.
  Using an average of five USNO-B1.0 stars (magR2) to set the zero-point we estimate the brightness of the afterglow at R=21.6 +/- 0.2 mag. This is only slightly fainter than the observation by Tanvir et al. (GCN 5216) six hours earlier and suggests a slow decay or contamination from the host galaxy.
  This message may be cited.
• GCN Circular #5488
  P. Chandra (UVA/NRAO) and D. A. Frail (NRAO) report on behalf of the Caltech-NRAO-Carnegie GRB Collaboration:
  "We observed the field centered on the BAT position of the Swift burst GRB 060604 (GCN#5215) using the VLA at a frequency of 8.46 GHz and starting at 9.27 UT on Aug 21, about 76 days after the burst. There is no detection of the GRB with 2-sigma upper limit of 130 microJy.
  The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."
• Redshift of z < 3
  0907.3449 from 20 Jul 2009
  Fynbo et al: Low-Resolution Spectroscopy of Gamma-ray Burst Optical Afterglows: Biases in the Swift Sample and Characterization of the Absorbers
  Abstract: (Abridged). We present a sample of 77 optical afterglows (OAs) of Swift detected GRBs for which spectroscopic follow-up observations have been secured. We provide linelists and equivalent widths for all detected lines redward of Ly-alpha. We discuss to what extent the current sample of Swift bursts with OA spectroscopy is a biased subsample of all Swift detected GRBs. For that purpose we define an X-ray selected sample of Swift bursts with optimal conditions for ground-based follow up from the period March 2005 to September 2008; 146 bursts fulfill our sample criteria. We derive the redshift distribution for this sample and conclude that less than 19% of Swift bursts are at z>7. We compare the high energy properties for three sub-samples of bursts in the sample: i) bursts with redshifts measured from OA spectroscopy, ii) bursts with detected OA, but no OA-based redshift, and iii) bursts with no detection of the OA. The bursts in group i) have significantly less excess X-ray absorption than bursts in the other two groups. In addition, the fraction of dark bursts is 14% in group i), 38% in group ii) and > 39% in group iii). From this we conclude that the sample of GRBs with OA spectroscopy is not representative for all Swift bursts, most likely due to a bias against the most dusty sight-lines. Finally, we characterize GRB absorption systems as a class and compare them to QSO absorption systems, in particular DLAs. On average GRB absorbers are characterized by significantly stronger EWs for HI as well as for both low and high ionization metal lines than what is seen in intervening QSO absorbers. Based on the z>2 bursts in the sample we place a 95% confidence upper limit of 7.5% on the mean escape fraction of ionizing photons from star-forming galaxies.
• New/revised redshift from the TOUGH project, in particular: 1205.3162 1205.3490 1205.3779 1205.4036