Gamma-ray Burst 080123

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Wed 23 Jan 08 04:22:14 UT
  NOTICE_TYPE:     Swift-BAT GRB Position
  TRIGGER_NUM:     301578,   Seg_Num: 0
  GRB_RA:          338.929d {+22h 35m 43s} (J2000),
                   339.066d {+22h 36m 16s} (current),
                   338.069d {+22h 32m 17s} (1950)
  GRB_DEC:         -64.890d {-64d 53' 23"} (J2000),
                   -64.848d {-64d 50' 52"} (current),
                   -65.149d {-65d 08' 55"} (1950)
  GRB_ERROR:       3.00 [arcmin radius, statistical only]
  GRB_INTEN:       700 [cnts]    Image_Peak=52 [image_cnts]
  TRIGGER_DUR:     0.064 [sec] 
  TRIGGER_INDEX:   10427     E_range: 50-350 keV
  BKG_INTEN:       22957 [cnts]
  BKG_TIME:        15701.47 SOD {04:21:41.47} UT
  BKG_DUR:         8 [sec]
  GRB_DATE:        14488 TJD;    23 DOY;   08/01/23
  GRB_TIME:        15717.15 SOD {04:21:57.15} UT
  GRB_PHI:         -26.29 [deg]
  GRB_THETA:        50.09 [deg]
  SOLN_STATUS:     0x3
  RATE_SIGNIF:     36.98 [sigma]
  IMAGE_SIGNIF:    7.04 [sigma]
  MERIT_PARAMS:     +1  +0  +0  -4  +3 +13  +0  +0 -63  +1 
  SUN_POSTN:       304.80d {+20h 19m 12s}  -19.60d {-19d 35' 43"}
  SUN_DIST:         50.62 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.41d {+08h 53m 38s}  +19.02d {+19d 01' 25"}
  MOON_DIST:       131.09 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      323.09,-46.57 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      308.37,-50.36 [deg] ecliptic lon,lat of the burst (or transient)
  COMMENTS:        SWIFT-BAT GRB Coordinates.  
  COMMENTS:        This is a rate trigger.  
  COMMENTS:        A point_source was found.  
  COMMENTS:        This does not match any source in the on-board catalog.  
  COMMENTS:        This does not match any source in the ground catalog.  
  COMMENTS:        This is a GRB.  
  COMMENTS:        This trigger occurred at longitude,latitude = 97.77,2.01 [deg].  
  

• red DSS finding chart ps-file
  
  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Wed 23 Jan 08 04:24:08 UT
  NOTICE_TYPE:     Swift-XRT Position
  TRIGGER_NUM:     301578,   Seg_Num: 0
  GRB_RA:          339.2813d {+22h 37m 07.5s} (J2000),
                   339.4184d {+22h 37m 40.4s} (current),
                   338.4246d {+22h 33m 41.9s} (1950)
  GRB_DEC:         -64.9496d {-64d 56' 58.5"} (J2000),
                   -64.9076d {-64d 54' 27.4"} (current),
                   -65.2093d {-65d 12' 33.3"} (1950)
  GRB_ERROR:       5.0 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       2.45e-09 [erg/cm2/sec]
  GRB_SIGNIF:      11.83 [sigma]
  IMG_START_DATE:  14488 TJD;    23 DOY;   08/01/23
  IMG_START_TIME:  15818.96 SOD {04:23:38.96} UT,   101.8 [sec] since BAT Trigger Time
  TAM[0-3]:        327.68 237.18 261.42 243.60
  AMPLIFIER:       2
  WAVEFORM:        134
  SUN_POSTN:       304.80d {+20h 19m 12s}  -19.60d {-19d 35' 41"}
  SUN_DIST:         50.76 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.43d {+08h 53m 43s}  +19.02d {+19d 01' 02"}
  MOON_DIST:       130.96 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      322.87,-46.64 [deg] galactic lon,lat of the burst
  ECL_COORDS:      308.50,-50.50 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Coordinates.  
  COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
  COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact; see examples at:  
  COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Wed 23 Jan 08 04:24:18 UT
  NOTICE_TYPE:     Swift-XRT Image
  TRIGGER_NUM:     301578,   Seg_Num: 0
  GRB_RA:          339.2813d {+22h 37m 07.5s} (J2000),
                   339.4184d {+22h 37m 40.4s} (current),
                   338.4246d {+22h 33m 41.9s} (1950)
  GRB_DEC:         -64.9496d {-64d 56' 58.5"} (J2000),
                   -64.9076d {-64d 54' 27.4"} (current),
                   -65.2093d {-65d 12' 33.3"} (1950)
  GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       140 [cnts]
  IMG_START_DATE:  14488 TJD;    23 DOY;   08/01/23
  IMG_START_TIME:  15818.96 SOD {04:23:38.96} UT,   101.8 [sec] since BAT Trigger Time
  CENTROID_X:      564.80,  raw= 565  [pixels]
  CENTROID_Y:      236.01,  raw= 236  [pixels]
  ROLL:            316.86 [deg]
  GAIN:            4
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   -146.12
  GRB_POS_XRT_Z:   618.80
  IMAGE_URL:       sw00301578000msxps_rw.img
  SUN_POSTN:       304.80d {+20h 19m 12s}  -19.60d {-19d 35' 41"}
  SUN_DIST:         50.76 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.43d {+08h 53m 43s}  +19.02d {+19d 00' 60"}
  MOON_DIST:       130.96 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      322.87,-46.64 [deg] galactic lon,lat of the burst
  ECL_COORDS:      308.50,-50.50 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Wed 23 Jan 08 04:24:25 UT
  NOTICE_TYPE:     Swift-XRT Processed Image
  TRIGGER_NUM:     301578,   Seg_Num: 0
  GRB_RA:          339.2813d {+22h 37m 07.5s} (J2000),
                   339.4184d {+22h 37m 40.4s} (current),
                   338.4246d {+22h 33m 41.9s} (1950)
  GRB_DEC:         -64.9496d {-64d 56' 58.5"} (J2000),
                   -64.9076d {-64d 54' 27.4"} (current),
                   -65.2093d {-65d 12' 33.3"} (1950)
  GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       140 [cnts]
  IMG_START_DATE:  14488 TJD;    23 DOY;   08/01/23
  IMG_START_TIME:  15818.96 SOD {04:23:38.96} UT,   101.8 [sec] since BAT Trigger Time
  CENTROID_X:      564.80,  raw= 565  [pixels]
  CENTROID_Y:      236.01,  raw= 236  [pixels]
  ROLL:            316.86 [deg]
  GAIN:            4
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   -146.12
  GRB_POS_XRT_Z:   618.80
  IMAGE_URL:       sw00301578000msxps_rw.img
  SUN_POSTN:       304.80d {+20h 19m 12s}  -19.60d {-19d 35' 41"}
  SUN_DIST:         50.76 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.43d {+08h 53m 43s}  +19.02d {+19d 00' 59"}
  MOON_DIST:       130.96 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      322.87,-46.64 [deg] galactic lon,lat of the burst
  ECL_COORDS:      308.50,-50.50 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Processed Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Wed 23 Jan 08 04:25:26 UT
  NOTICE_TYPE:     Swift-BAT GRB Lightcurve
  TRIGGER_NUM:     301578,   Seg_Num: 0
  GRB_RA:          338.929d {+22h 35m 43s} (J2000),
                   339.066d {+22h 36m 16s} (current),
                   338.069d {+22h 32m 17s} (1950)
  GRB_DEC:         -64.890d {-64d 53' 23"} (J2000),
                   -64.848d {-64d 50' 52"} (current),
                   -65.149d {-65d 08' 55"} (1950)
  GRB_DATE:        14488 TJD;    23 DOY;   08/01/23
  GRB_TIME:        15717.40 SOD {04:21:57.40} UT
  TRIGGER_INDEX:   10427
  GRB_PHI:         -26.29 [deg]
  GRB_THETA:        50.09 [deg]
  DELTA_TIME:      8.00 [sec]
  TRIGGER_DUR:     0.064 [sec] 
  SOLN_STATUS:     0x3
  RATE_SIGNIF:     36.98 [sigma]
  IMAGE_SIGNIF:    7.04 [sigma]
  LC_URL:          sw00301578000msb.lc
  SUN_POSTN:       304.80d {+20h 19m 12s}  -19.59d {-19d 35' 41"}
  SUN_DIST:         50.62 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.44d {+08h 53m 46s}  +19.01d {+19d 00' 46"}
  MOON_DIST:       131.09 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      323.09,-46.57 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      308.37,-50.36 [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 = 97.77,2.01 [deg].  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Wed 23 Jan 08 04:27:14 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     301578,   Seg_Num: 0
  POINT_RA:        338.934d {+22h 35m 44s} (J2000)
  POINT_DEC:       -64.852d {-64d 51' 06"} (J2000)
  POINT_ROLL:      316.859d
  IMG_START_DATE:  14488 TJD;    23 DOY;   08/01/23
  IMG_START_TIME:  15828.33 SOD {04:23:48.33} UT,   111.2 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        4.817
  N_STARS:         31
  X_OFFSET:        216 [pixels]
  Y_OFFSET:        488 [pixels]
  X_MAX:           1175 [pixels]
  Y_MAX:           1447 [pixels]
  DET_THRESH:      18
  PHOTO_THRESH:    11
  SL_URL:          sw00301578000msufc0111.fits
  SUN_POSTN:       304.80d {+20h 19m 13s}  -19.59d {-19d 35' 40"}
  SUN_DIST:         50.59 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.46d {+08h 53m 50s}  +19.01d {+19d 00' 24"}
  MOON_DIST:       131.12 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      323.13,-46.60 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      308.41,-50.33 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Wed 23 Jan 08 04:27:42 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     301578,   Seg_Num: 0
  POINT_RA:        338.934d {+22h 35m 44s} (J2000)
  POINT_DEC:       -64.852d {-64d 51' 06"} (J2000)
  POINT_ROLL:      316.859d
  IMG_START_DATE:  14488 TJD;    23 DOY;   08/01/23
  IMG_START_TIME:  15828.33 SOD {04:23:48.33} UT,   111.2 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        4.817
  N_STARS:         31
  X_OFFSET:        216 [pixels]
  Y_OFFSET:        488 [pixels]
  X_MAX:           1175 [pixels]
  Y_MAX:           1447 [pixels]
  DET_THRESH:      18
  PHOTO_THRESH:    11
  SL_URL:          sw00301578000msufc0111.fits
  SUN_POSTN:       304.80d {+20h 19m 13s}  -19.59d {-19d 35' 39"}
  SUN_DIST:         50.59 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.46d {+08h 53m 51s}  +19.01d {+19d 00' 18"}
  MOON_DIST:       131.11 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      323.13,-46.60 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      308.41,-50.33 [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:     Wed 23 Jan 08 04:28:20 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     301578,   Seg_Num: 0
  POINT_RA:        338.934d {+22h 35m 44s} (J2000)
  POINT_DEC:       -64.852d {-64d 51' 06"} (J2000)
  ROLL:            316.859d
  IMG_START_DATE:  14488 TJD;    23 DOY;   08/01/23
  IMG_START_TIME:  15828.33 SOD {04:23:48.33} UT,   111.2 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     222755030
  X_OFFSET:        0 [pixels]
  Y_OFFSET:        1728 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       12
  Y_GRB_POS:       1901
  BINNING_INDEX:   1
  IM_URL:          sw00301578000msuni0111.fits
  SUN_POSTN:       304.80d {+20h 19m 13s}  -19.59d {-19d 35' 39"}
  SUN_DIST:         50.59 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.47d {+08h 53m 52s}  +19.00d {+19d 00' 10"}
  MOON_DIST:       131.11 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      323.13,-46.60 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      308.41,-50.33 [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:     Wed 23 Jan 08 04:28:35 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     301578,   Seg_Num: 0
  POINT_RA:        338.934d {+22h 35m 44s} (J2000)
  POINT_DEC:       -64.852d {-64d 51' 06"} (J2000)
  ROLL:            316.859d
  IMG_START_DATE:  14488 TJD;    23 DOY;   08/01/23
  IMG_START_TIME:  15828.33 SOD {04:23:48.33} UT,   111.2 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     222755030
  X_OFFSET:        0 [pixels]
  Y_OFFSET:        1728 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       12
  Y_GRB_POS:       1901
  BINNING_INDEX:   1
  IM_URL:          sw00301578000msuni0111.fits
  SUN_POSTN:       304.80d {+20h 19m 13s}  -19.59d {-19d 35' 39"}
  SUN_DIST:         50.59 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.47d {+08h 53m 53s}  +19.00d {+19d 00' 07"}
  MOON_DIST:       131.11 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      323.13,-46.60 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      308.41,-50.33 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Image.  
  COMMENTS:        The GRB Position came from the XRT Position Command.  
  COMMENTS:        The image has 2x2 binning (compression).  
  COMMENTS:        If you have elected to receive attachments:  
  COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.  
  COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Wed 23 Jan 08 04:33:59 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     301578,   Seg_Num: 0
  POINT_RA:        338.931d {+22h 35m 43s} (J2000)
  POINT_DEC:       -64.853d {-64d 51' 10"} (J2000)
  POINT_ROLL:      316.863d
  IMG_START_DATE:  14488 TJD;    23 DOY;   08/01/23
  IMG_START_TIME:  15936.12 SOD {04:25:36.12} UT,   219.0 [sec] since BAT Trigger Time
  FILTER:          3, V
  BKG_MEAN:        3.093
  N_STARS:         47
  X_OFFSET:        0 [pixels]
  Y_OFFSET:        1088 [pixels]
  X_MAX:           959 [pixels]
  Y_MAX:           2047 [pixels]
  DET_THRESH:      15
  PHOTO_THRESH:    8
  SL_URL:          sw00301578000msufc0218.fits
  SUN_POSTN:       304.81d {+20h 19m 14s}  -19.59d {-19d 35' 36"}
  SUN_DIST:         50.59 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.52d {+08h 54m 05s}  +18.98d {+18d 59' 01"}
  MOON_DIST:       131.11 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      323.13,-46.60 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      308.40,-50.33 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Wed 23 Jan 08 04:34:32 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     301578,   Seg_Num: 0
  POINT_RA:        338.931d {+22h 35m 43s} (J2000)
  POINT_DEC:       -64.853d {-64d 51' 10"} (J2000)
  POINT_ROLL:      316.863d
  IMG_START_DATE:  14488 TJD;    23 DOY;   08/01/23
  IMG_START_TIME:  15936.12 SOD {04:25:36.12} UT,   219.0 [sec] since BAT Trigger Time
  FILTER:          3, V
  BKG_MEAN:        3.093
  N_STARS:         47
  X_OFFSET:        0 [pixels]
  Y_OFFSET:        1088 [pixels]
  X_MAX:           959 [pixels]
  Y_MAX:           2047 [pixels]
  DET_THRESH:      15
  PHOTO_THRESH:    8
  SL_URL:          sw00301578000msufc0218.fits
  SUN_POSTN:       304.81d {+20h 19m 14s}  -19.59d {-19d 35' 35"}
  SUN_DIST:         50.59 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.53d {+08h 54m 06s}  +18.98d {+18d 58' 54"}
  MOON_DIST:       131.11 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      323.13,-46.60 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      308.40,-50.33 [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:     Wed 23 Jan 08 04:38:08 UT
  NOTICE_TYPE:     Swift-XRT Position
  TRIGGER_NUM:     301578,   Seg_Num: 0
  GRB_RA:          339.2812d {+22h 37m 07.4s} (J2000),
                   339.4183d {+22h 37m 40.3s} (current),
                   338.4245d {+22h 33m 41.8s} (1950)
  GRB_DEC:         -64.9496d {-64d 56' 58.5"} (J2000),
                   -64.9076d {-64d 54' 27.4"} (current),
                   -65.2093d {-65d 12' 33.3"} (1950)
  GRB_ERROR:       4.7 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       2.45e-09 [erg/cm2/sec]
  GRB_SIGNIF:      11.80 [sigma]
  IMG_START_DATE:  14488 TJD;    23 DOY;   08/01/23
  IMG_START_TIME:  15818.95 SOD {04:23:38.95} UT,   101.8 [sec] since BAT Trigger Time
  TAM[0-3]:        327.61 237.19 261.35 242.66
  AMPLIFIER:       2
  WAVEFORM:        134
  SUN_POSTN:       304.81d {+20h 19m 14s}  -19.59d {-19d 35' 33"}
  SUN_DIST:         50.76 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.56d {+08h 54m 15s}  +18.97d {+18d 58' 09"}
  MOON_DIST:       130.94 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      322.87,-46.64 [deg] galactic lon,lat of the burst
  ECL_COORDS:      308.50,-50.50 [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 NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Wed 23 Jan 08 04:39:12 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     301578,   Seg_Num: 0
  POINT_RA:        338.931d {+22h 35m 43s} (J2000)
  POINT_DEC:       -64.853d {-64d 51' 10"} (J2000)
  POINT_ROLL:      316.863d
  IMG_START_DATE:  14488 TJD;    23 DOY;   08/01/23
  IMG_START_TIME:  16584.26 SOD {04:36:24.26} UT,   867.1 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        2.738
  N_STARS:         39
  X_OFFSET:        0 [pixels]
  Y_OFFSET:        1088 [pixels]
  X_MAX:           959 [pixels]
  Y_MAX:           2047 [pixels]
  DET_THRESH:      14
  PHOTO_THRESH:    7
  SL_URL:          sw00301578000msufc0867.fits
  SUN_POSTN:       304.81d {+20h 19m 15s}  -19.59d {-19d 35' 33"}
  SUN_DIST:         50.59 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
  MOON_POSTN:      133.57d {+08h 54m 17s}  +18.97d {+18d 57' 56"}
  MOON_DIST:       131.10 [deg]
  MOON_ILLUM:      100 [%]
  GAL_COORDS:      323.13,-46.60 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      308.40,-50.33 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN Circular #7203
  T. N. Ukwatta (GSFC/GWU), W. H. Baumgartner (GSFC/UMBC), M. M. Chester (PSU), N. Gehrels (NASA/GSFC), S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU), S. Immler (CRESST/GSFC/UMD), J. A. Kennea (PSU), V. Mangano (INAF-IASFPA), F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL), T. Sakamoto (NASA/UMBC), B. Sbarufatti (INAF-IASFPA) and D. E. Vanden Berk (PSU) report on behalf of the Swift Team:
  At 04:21:57 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080123 (trigger=301578). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 338.929, -64.890 which is

     RA(J2000) = 22h 35m 43s
     Dec(J2000) = -64d 53' 23"
  

  with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a double-peaked structure with a duration of about 0.5 sec. The peak count rate was ~6000 counts/sec (15-350 keV), at ~0.1 sec after the trigger.
  The XRT began observing the field at 04:23:38 UT, 102 seconds after the BAT trigger. Using prompt downlinked data, we find a bright, fading X-ray source located at RA, Dec 338.9446, -64.9011 which is

    RA(J2000)  = 22h 35m 46.71s
    Dec(J2000) = -64d 54' 04.0"
  

  with an uncertainty of 1.6 arcsec (radius, 90% containment). This location is 46 arcseconds from the BAT on-board position, outside the BAT error circle.
  UVOT took a finding chart exposure of nominal 100 seconds with the White (160-650 nm) filter starting 111 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. Image catalog data are not available at this time. The 8'x8' region for the list of sources generated on-board covers 100% of the BAT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.03.
  Burst Advocate for this burst is T. N. Ukwatta (tilan.ukwatta AT gmail.com). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html)
• GCN Circular #7204
  J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
  Using 390 s of overlapping XRT Photon Counting mode and UVOT V-band data for GRB 080123, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 338.94226, -64.90090 which is equivalent to:

  RA (J2000): 22h 35m 46.1s
  Dec (J2000): -64d 54' 3.24"
  

  with an uncertainty of 2.1 arcsec (radius, 90% confidence).
  This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, astro-ph/0708.0986 http://www.swift.ac.uk/xrt_positions/Goad.pdf).
  This circular was automatically generated, and is an official product of the Swift-XRT team.
• GCN Circular #7205
  J. Tueller (GSFC), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), T. Sakamoto (GSFC/UMBC), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), T. Ukwatta (GWU) (i.e. 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 080123 (trigger #301578) (Ukwatta, et al., GCN Circ. 7203). The BAT ground-calculated position is RA, Dec = 338.974, -64.930 deg which is

     RA(J2000)  =  22h 35m 53.8s 
     Dec(J2000) = -64d 55' 48" 
  

  with an uncertainty of 4.1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 20%.
  The mask-weighted light curve shows two well-separated peaks. The first starts at ~T+0.3 sec and is no wider than 64 msec. The second peak starts at ~T+0.6 sec with a FRED-like shape and a duration of ~256 msec. There is soft extended emission lasting ~120 sec. T90 (15-350 keV) is 115 +- 30 sec (estimated error including systematics).
  The time-averaged spectrum from T+0.3 to T+122.2 sec (SHB plus extended emmission) is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.15 +- 0.54. The fluence in the 15-150 keV band is 5.7 +- 1.7 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T-0.05 sec in the 15-150 keV band is 1.8 +- 0.4 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
  The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/301578/BA/
• GCN Circular #7207
  A. Cucchiara (PSU), T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift-UVOT team:
  The Swift/UVOT observed the field of GRB080123 (trigger #301578) starting 111 seconds after the BAT trigger (Ukwatta et al. 2008, GCN Circ. 7203). We do not find any new source in any of the UVOT single or coadded observations inside the XRT enhanced error circle (Osborne et al., GCN Circ. 7204). The XRT position is not covered by the V ,U and B images.
  The 3-sigma upper limits (in the UVOT photometric system, Breeveld et al., GCN Circ. 6614) are listed:

  Filter           Tstart   Tstop     Exp    Magnitude  
                     (s)     (s)      (s)   
  
  white              112     211      100    >20.48
  (finding chart)
  
  uvw1               651    8022      577    >20.86
  uvm2               626    7817      578    >20.70
  uvw2               731   14026     1188    >21.56
  

  The values quoted above are not corrected for the expected Galactic extinction corresponding to a reddening of E_{B-V} = 0.03 mag in the direction of the burst (Schlegel et al. 1998).
• GCN Circular #7208
  V. Mangano, B. Sbarufatti (INAF-IASF PA), T. N. Ukwatta (GSFC/GWU), and D. N. Burrows (PSU) report on behalf of the Swift XRT team:
  We have analyzed the XRT data collected during the first three orbits of observation of GRB 080123 (Ukwatta et al., GCN Circ. 7203). We have 124 s of exposure in WT mode (from T+108 to T+224 s) and 7.1 ks in PC mode.
  The initial XRT on-board position was centered on a cosmic ray hit. This position was retracted. The XRT position reported in GCN Circ. 7203 was obtained from the first downlinked data, but we note that the error circle given in this circular erroneously ignored the systematic component and was therefore much too small. The new, refined position of the XRT afterglow is
  22h 35m 46.6s, -64d 54' 03.8" (J2000)
  with an error circle radius of 3.9" (90% confidence). As reported by Osborne et al. (GCN Circ. 7204), the UVOT-enhanced astrometric position is RA, Dec = 338.94226, -64.90090 which is equivalent to:

  RA (J2000):   22h 35m 46.1s
  Dec (J2000): -64d 54' 03.24"
  

  with an uncertainty of 2.1 arcsec (radius, 90% confidence).
  The X-ray light curve of the source shows a doubly broken power law behaviour, with an initial decay with slope 1.7 +/- 0.2, a first break at T+203 +/- 10 s, a second decay phase with slope 6.9 +/- 0.4, a second break at T+436 +/- 250 s and a third decay phase with slope 1.2 +/- 0.3. If decaying at this rate the source will be at the level of 9.0e-5 counts/s at T+24 hr.
  The WT spectrum is well fitted by an absorbed power law with photon index 1.64 +/- 0.09, while the PC spectrum can be fitted by a power law with photon index of 2.1 +/- 0.2. Both spectra are consistent with an absorption column of (8.1 +/- 2.4)e20 cm^-2, in excess with respect to the Galactic absorption along the line of sight (2e20 cm^-2, Kalberla et al. 2005). The observed (unabsorbed) flux in the 0.3-10 keV band is 7.0e-10 (7.9e-10) erg cm^-2 s^-1 for the WT spectrum and 1.1e-12 (1.4e-12) erg cm^-2 s^-1 for the PC spectrum.
  This circular is an official product of the Swift-XRT team.
• GCN Circular #7223
  T. Uehara, M. Ohno, T. Takahashi, Y. Fukazawa, C. Kira, Y. Hanabata (Hiroshima U.), T. Tamagawa (RIKEN), K. Yamaoka, Y. E. Nakagawa, S. Sugita (Aoyama Gakuin U.), M. Tashiro, Y. Terada, Y. Urata, A. Endo, K. Onda, M. Suzuki, N. Kodaka, K. Morigami (Saitama U.), T. Enoto, R. Miyawaki, K. Nakazawa, K. Makishima (Univ. of Tokyo), E. Sonoda, M. Yamauchi, H. Tanaka, R. Hara (Univ. of Miyazaki), M. Kokubun, M. Suzuki, T. Takahashi (ISAS/JAXA), S. Hong (Nihon U.), on behalf of the Suzaku WAM team, report:
  The short GRB 080123 (Swift/BAT trigger #301578 ; Ukwatta et al., GCN 7203) triggered the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV at 2008-01-22 04:21:57 UT (=T0).
  The observed light curve shows a double-peaked structure starting at T0 s, ending at T0+0.4 s with a duration (T90) of about 0.40 seconds. The fluence in 100 - 1000 keV was 3.1 (+/- 0.5) x 10^-7 erg/cm^2. The 1-s peak flux measured from T0 s was 1.2 (+/- 0.2) photons/cm^2/s in the same energy range.
  Preliminary result shows that the time-averaged spectrum from T0 s to T0+0.5 s is well fitted by a single power-law with a photon index of 1.22 (+0.21, -0.52) (chi^2/d.o.f = 10/13).
  All the quoted errors are at statistical 90% confidence level, in which the systematic uncertainties are not included.
  The light curves for this burst are available at:
  http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html
• GCN Report 111.1
  GCN_Report 111.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_111_1.pdf by T. Ukwatta at GSFC/GWU titled: "Final Swift observations of GRB 080123"
• GCN Circular #7237
  A. Copete, J. Grindlay, B. Allen, J. Hong (Harvard) S. Barthelmy, C. Markwardt, N. Gehrels (GSFC)
  We report the independent detection of early afterglow (or post prompt- emission flaring) emission from the short GRB 080123 (GCN#7203). The BATSS pipeline processed the BAT data from the initial automatic slew to the burst, which started at 04:22:09 UT (T+12sec), and was completed within 5 hours of the BAT trigger. A 6.2-sigma image detection (from stacked 0.2sec slew images throughout the 68sec slew) in the 15-50 keV energy band yielded a position of:

    RA(J2000) = 22h 35m 08s
    Dec(J2000) = -64d 57' 24"
  

  with an uncertainty of 6 arcmin (90% confidence radius), consistent with the XRT reported position of GRB080123 (GCN# 7208). Preliminary lightcurve analysis shows the BATSS image detection is due to an inital ~4sec duration flare at T+20, followed by two possible broader (~10-15sec) peaks at T+49 and T+72. The total estimated fluence is 2.1E-7 erg/cm2 (15-50keV; derived for a PL model with photon index 2) over the 68.8sec duration of the slew. This fluence is a factor of 0.36 times that reported in the 15-150keV band (GCN Report 111.1) for T +0.3 to T+122.2 and is likely dominated by the soft flare emission after the prompt hard emission of the short GRB.
  BATSS pipeline processing is in the final stages of development following our first preliminary tests, which discovered GRB070326 (GCN# 6653). Full BATSS results will begin to be available soon from a website to be announced.
• ApJ 725, 1202
  Leiber & Berger 2010: host and redshift z=0.495