Gamma-ray Burst 130627A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Jun 13 08:55:55 UT
  NOTICE_TYPE:     Swift-BAT GRB Position
  TRIGGER_NUM:     559132,   Seg_Num: 0
  GRB_RA:          184.445d {+12h 17m 47s} (J2000),
                   184.623d {+12h 18m 29s} (current),
                   183.790d {+12h 15m 10s} (1950)
  GRB_DEC:         -37.086d {-37d 05' 09"} (J2000),
                   -37.161d {-37d 09' 38"} (current),
                   -36.808d {-36d 48' 29"} (1950)
  GRB_ERROR:       3.00 [arcmin radius, statistical only]
  GRB_INTEN:       10632 [cnts]    Image_Peak=218 [image_cnts]
  TRIGGER_DUR:     4.096 [sec] 
  TRIGGER_INDEX:   306     E_range: 25-100 keV
  BKG_INTEN:       93685 [cnts]
  BKG_TIME:        32045.27 SOD {08:54:05.27} UT
  BKG_DUR:         40 [sec]
  GRB_DATE:        16470 TJD;   178 DOY;   13/06/27
  GRB_TIME:        32103.45 SOD {08:55:03.45} UT
  GRB_PHI:         -144.05 [deg]
  GRB_THETA:        48.35 [deg]
  SOLN_STATUS:     0x20000003
  RATE_SIGNIF:     10.67 [sigma]
  IMAGE_SIGNIF:    7.41 [sigma]
  MERIT_PARAMS:     +1  +0  +0  +2  +2  -2  +0  +0 +21  +0 
  SUN_POSTN:        96.40d {+06h 25m 36s}  +23.31d {+23d 18' 23"}
  SUN_DIST:        102.49 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      330.55d {+22h 02m 13s}   -6.72d {-06d 43' 21"}
  MOON_DIST:       125.80 [deg]
  MOON_ILLUM:      79 [%]
  GAL_COORDS:      295.51, 25.30 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      200.45,-31.91 [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 = 224.14,17.94 [deg].  
  COMMENTS:           
  COMMENTS:        NOTE: This BAT event is temporally(2.0<100sec) coincident with the FERMI_GBM event (trignum=394016108).  
  

• red DSS finding chart ps-file
  
  
• GCN NOTICE
  

  TITLE:           GCN/FERMI NOTICE
  NOTICE_DATE:     Thu 27 Jun 13 08:56:01 UT
  NOTICE_TYPE:     Fermi-GBM Flight Position
  RECORD_NUM:      45
  TRIGGER_NUM:     394016108
  GRB_RA:          181.650d {+12h 06m 36s} (J2000),
                   181.825d {+12h 07m 18s} (current),
                   181.003d {+12h 04m 01s} (1950)
  GRB_DEC:         -45.050d {-45d 02' 59"} (J2000),
                   -45.125d {-45d 07' 29"} (current),
                   -44.772d {-44d 46' 17"} (1950)
  GRB_ERROR:       14.75 [deg radius, statistical plus systematic]
  GRB_INTEN:       71 [cnts/sec]
  DATA_SIGNIF:     5.70 [sigma]
  INTEG_TIME:      2.048 [sec]
  GRB_DATE:        16470 TJD;   178 DOY;   13/06/27
  GRB_TIME:        32105.93 SOD {08:55:05.93} UT
  GRB_PHI:          75.00 [deg]
  GRB_THETA:        20.00 [deg]
  DATA_TIME_SCALE: 2.0480 [sec]
  HARD_RATIO:      1.23
  LOC_ALGORITHM:   3 (version number of)
  MOST_LIKELY:      98%  GRB
  2nd_MOST_LIKELY:   1%  Generic SGR
  DETECTORS:       1,0,0, 1,0,0, 0,0,0, 0,0,0, 0,0,
  SUN_POSTN:        96.40d {+06h 25m 37s}  +23.31d {+23d 18' 23"}
  SUN_DIST:        103.22 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
  MOON_POSTN:      330.56d {+22h 02m 13s}   -6.72d {-06d 43' 20"}
  MOON_DIST:       121.06 [deg]
  MOON_ILLUM:      79 [%]
  GAL_COORDS:      294.67, 17.10 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      203.03,-39.88 [deg] ecliptic lon,lat of the burst (or transient)
  COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
  COMMENTS:        This trigger occurred at longitude,latitude = 131.22,18.82 [deg].  
  COMMENTS:           
  COMMENTS:        NOTE: This GBM event is temporally(2.0<100sec) coincident with the SWIFT_BAT event (trignum=559132).  
  

• GCN NOTICE
  

  TITLE:           GCN/FERMI NOTICE
  NOTICE_DATE:     Thu 27 Jun 13 08:56:11 UT
  NOTICE_TYPE:     Fermi-GBM Ground Position
  RECORD_NUM:      56
  TRIGGER_NUM:     394016108
  GRB_RA:          178.970d {+11h 55m 53s} (J2000),
                   179.142d {+11h 56m 34s} (current),
                   178.336d {+11h 53m 21s} (1950)
  GRB_DEC:         -46.040d {-46d 02' 23"} (J2000),
                   -46.115d {-46d 06' 53"} (current),
                   -45.762d {-45d 45' 41"} (1950)
  GRB_ERROR:       3.99 [deg radius, statistical only]
  DATA_SIGNIF:     8.10 [sigma]
  DATA_INTERVAL:   2.048 [sec]
  GRB_DATE:        16470 TJD;   178 DOY;   13/06/27
  GRB_TIME:        32105.93 SOD {08:55:05.93} UT
  GRB_PHI:          73.00 [deg]
  GRB_THETA:        22.00 [deg]
  E_RANGE:         44.032 - 279.965 [keV]
  LOC_ALGORITHM:   4143 (Gnd S/W Version number)
  SUN_POSTN:        96.40d {+06h 25m 37s}  +23.31d {+23d 18' 23"}
  SUN_DIST:        101.81 [deg]   Sun_angle= -5.5 [hr] (East of Sun)
  MOON_POSTN:      330.56d {+22h 02m 14s}   -6.72d {-06d 43' 18"}
  MOON_DIST:       121.34 [deg]
  MOON_ILLUM:      79 [%]
  GAL_COORDS:      292.96, 15.75 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      201.61,-41.71 [deg] ecliptic lon,lat of the burst (or transient)
  COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
  COMMENTS:        In the LAT Field-of-view.  
  COMMENTS:        This Notice was ground-generated -- not flight-generated.  
  COMMENTS:           
  COMMENTS:        NOTE: This GBM event is temporally(2.0<100sec) coincident with the SWIFT_BAT event (trignum=559132).  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Jun 13 08:59:19 UT
  NOTICE_TYPE:     Swift-BAT GRB Lightcurve
  TRIGGER_NUM:     559132,   Seg_Num: 0
  GRB_RA:          184.445d {+12h 17m 47s} (J2000),
                   184.623d {+12h 18m 29s} (current),
                   183.790d {+12h 15m 10s} (1950)
  GRB_DEC:         -37.086d {-37d 05' 09"} (J2000),
                   -37.161d {-37d 09' 38"} (current),
                   -36.808d {-36d 48' 29"} (1950)
  GRB_DATE:        16470 TJD;   178 DOY;   13/06/27
  GRB_TIME:        32103.45 SOD {08:55:03.45} UT
  TRIGGER_INDEX:   306
  GRB_PHI:         -144.05 [deg]
  GRB_THETA:        48.35 [deg]
  DELTA_TIME:      -57.00 [sec]
  TRIGGER_DUR:     4.096 [sec] 
  SOLN_STATUS:     0x3
  RATE_SIGNIF:     10.67 [sigma]
  IMAGE_SIGNIF:    7.41 [sigma]
  LC_URL:          sw00559132000msb.lc
  SUN_POSTN:        96.40d {+06h 25m 37s}  +23.31d {+23d 18' 23"}
  SUN_DIST:        102.49 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      330.59d {+22h 02m 21s}   -6.71d {-06d 42' 41"}
  MOON_DIST:       125.82 [deg]
  MOON_ILLUM:      79 [%]
  GAL_COORDS:      295.51, 25.30 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:      200.45,-31.91 [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 = 224.14,17.94 [deg].  
  

  
• GCN NOTICE
  

  TITLE:          GCN/INTEGRAL NOTICE
  NOTICE_DATE:    Thu 27 Jun 13 08:59:41 UT 
  NOTICE_TYPE:    INTEGRAL SPI ACS Trigger
  TRIGGER_NUM:    6871,   Sub_Num: 0
  GRB_INTEN:      10.16 [sigma]  
  GRB_TIME:       32347.66 SOD {08:59:07.66} UT
  GRB_DATE:       16470 TJD;   178 DOY;   13/06/27
  COMMENTS:       INTEGRAL SPI_ACS GRB Trigger.
  COMMENTS:       Time_Scale=0.0500 and Time_Error=0.0250. 
  COMMENTS:       The SPIACS lightcurve can be found at:
  COMMENTS:       ftp://isdcarc.unige.ch/arc/FTP/ibas/spiacs/2013-06/2013-06-27T08-59-07.5501-16787-64400-0.lc
  

• GCN Circular #14933
  S. R. Oates (UCL-MSSL), V. D'Elia (ASDC), P. A. Evans (U Leicester) and A. Y. Lien (NASA/GSFC/ORAU) report on behalf of the Swift Team:
  At 08:55:03 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 130627A (trigger=559132). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 184.445, -37.086 which is

     RA(J2000) = 12h 17m 47s
     Dec(J2000) = -37d 05' 09"
  

  with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a multi-peaked structure with a duration of about 30 sec. The peak count rate was ~1000 counts/sec (15-350 keV), at ~3 sec after the trigger.
  Due to an observing constraint, Swift will not slew until T0+46.0 minutes. There will be no XRT or UVOT data until this time.
  Burst Advocate for this burst is S. R. Oates (samantha.oates AT ucl.ac.uk). 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 NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Jun 13 09:44:56 UT
  NOTICE_TYPE:     Swift-XRT Nack-Position
  TRIGGER_NUM:     559132,   Seg_Num: 0
  POINT_RA:        184.433d {+12h 17m 44s} (J2000)
  POINT_DEC:       -37.068d {-37d 04' 05"} (J2000)
  IMG_START_DATE:  16470 TJD;   178 DOY;   13/06/27
  IMG_START_TIME:  35079.38 SOD {09:44:39.38} UT,   2975.9 [sec] since BAT Trigger Time
  COUNTS:          1    Min_needed= 20
  STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
  PH2_ITER:        0    Max_iter_allowed= 4
  ERROR_CODE:      1
  COMMENTS:        SWIFT-XRT Nack Position.  
  COMMENTS:        No source found in the image.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Jun 13 09:48:47 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     559132,   Seg_Num: 0
  POINT_RA:        184.433d {+12h 17m 44s} (J2000)
  POINT_DEC:       -37.068d {-37d 04' 05"} (J2000)
  POINT_ROLL:      290.161d
  IMG_START_DATE:  16470 TJD;   178 DOY;   13/06/27
  IMG_START_TIME:  35082.63 SOD {09:44:42.63} UT,   2979.2 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        5.398
  N_STARS:         58
  X_OFFSET:        333 [pixels]
  Y_OFFSET:        541 [pixels]
  X_MAX:           1292 [pixels]
  Y_MAX:           1500 [pixels]
  DET_THRESH:      20
  PHOTO_THRESH:    11
  SL_URL:          sw00559132000msufc2979.fits
  SUN_POSTN:        96.44d {+06h 25m 46s}  +23.30d {+23d 18' 18"}
  SUN_DIST:        102.44 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      331.05d {+22h 04m 12s}   -6.55d {-06d 33' 01"}
  MOON_DIST:       126.23 [deg]
  MOON_ILLUM:      79 [%]
  GAL_COORDS:      295.50, 25.32 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      200.43,-31.90 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Jun 13 09:49:14 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     559132,   Seg_Num: 0
  POINT_RA:        184.433d {+12h 17m 44s} (J2000)
  POINT_DEC:       -37.068d {-37d 04' 05"} (J2000)
  POINT_ROLL:      290.161d
  IMG_START_DATE:  16470 TJD;   178 DOY;   13/06/27
  IMG_START_TIME:  35082.63 SOD {09:44:42.63} UT,   2979.2 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        5.398
  N_STARS:         58
  X_OFFSET:        333 [pixels]
  Y_OFFSET:        541 [pixels]
  X_MAX:           1292 [pixels]
  Y_MAX:           1500 [pixels]
  DET_THRESH:      20
  PHOTO_THRESH:    11
  SL_URL:          sw00559132000msufc2979.fits
  SUN_POSTN:        96.44d {+06h 25m 46s}  +23.30d {+23d 18' 18"}
  SUN_DIST:        102.44 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      331.05d {+22h 04m 13s}   -6.55d {-06d 32' 56"}
  MOON_DIST:       126.23 [deg]
  MOON_ILLUM:      79 [%]
  GAL_COORDS:      295.50, 25.32 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      200.43,-31.90 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Source List.  
  COMMENTS:        All 4 attachments are included.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 27 Jun 13 09:50:14 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     559132,   Seg_Num: 0
  POINT_RA:        184.433d {+12h 17m 44s} (J2000)
  POINT_DEC:       -37.068d {-37d 04' 05"} (J2000)
  ROLL:            290.161d
  IMG_START_DATE:  16470 TJD;   178 DOY;   13/06/27
  IMG_START_TIME:  35082.63 SOD {09:44:42.63} UT,   2979.2 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     394019093
  X_OFFSET:        652 [pixels]
  Y_OFFSET:        860 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       812
  Y_GRB_POS:       1020
  BINNING_INDEX:   1
  IM_URL:          sw00559132000msuni2990.fits
  SUN_POSTN:        96.44d {+06h 25m 46s}  +23.30d {+23d 18' 18"}
  SUN_DIST:        102.44 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      331.06d {+22h 04m 15s}   -6.55d {-06d 32' 44"}
  MOON_DIST:       126.24 [deg]
  MOON_ILLUM:      79 [%]
  GAL_COORDS:      295.50, 25.32 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      200.43,-31.90 [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:     Thu 27 Jun 13 09:50:42 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     559132,   Seg_Num: 0
  POINT_RA:        184.433d {+12h 17m 44s} (J2000)
  POINT_DEC:       -37.068d {-37d 04' 05"} (J2000)
  ROLL:            290.161d
  IMG_START_DATE:  16470 TJD;   178 DOY;   13/06/27
  IMG_START_TIME:  35082.63 SOD {09:44:42.63} UT,   2979.2 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     394019093
  X_OFFSET:        652 [pixels]
  Y_OFFSET:        860 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       812
  Y_GRB_POS:       1020
  BINNING_INDEX:   1
  IM_URL:          sw00559132000msuni2990.fits
  SUN_POSTN:        96.44d {+06h 25m 46s}  +23.30d {+23d 18' 18"}
  SUN_DIST:        102.44 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      331.07d {+22h 04m 16s}   -6.54d {-06d 32' 39"}
  MOON_DIST:       126.25 [deg]
  MOON_ILLUM:      79 [%]
  GAL_COORDS:      295.50, 25.32 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:      200.43,-31.90 [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:     Thu 27 Jun 13 09:51:53 UT
  NOTICE_TYPE:     Swift-XRT Position
  TRIGGER_NUM:     559132,   Seg_Num: 0
  GRB_RA:          184.4168d {+12h 17m 40.03s} (J2000),
                   184.5941d {+12h 18m 22.57s} (current),
                   183.7614d {+12h 15m 02.72s} (1950)
  GRB_DEC:         -37.0864d {-37d 05' 11.0"} (J2000),
                   -37.1613d {-37d 09' 40.5"} (current),
                   -36.8087d {-36d 48' 31.3"} (1950)
  GRB_ERROR:       4.2 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       1.00e-10 [erg/cm2/sec]
  GRB_SIGNIF:      10.00 [sigma]
  IMG_START_DATE:  16470 TJD;   178 DOY;   13/06/27
  IMG_START_TIME:  35100.00 SOD {09:45:00.00} UT,   2996.5 [sec] since BAT Trigger Time
  TAM[0-3]:        100.00 100.00 100.00 100.00
  AMPLIFIER:       1
  WAVEFORM:        31
  SUN_POSTN:        96.44d {+06h 25m 46s}  +23.30d {+23d 18' 17"}
  SUN_DIST:        102.44 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
  MOON_POSTN:      331.08d {+22h 04m 19s}   -6.54d {-06d 32' 25"}
  MOON_DIST:       126.25 [deg]
  MOON_ILLUM:      79 [%]
  GAL_COORDS:      295.49, 25.30 [deg] galactic lon,lat of the burst
  ECL_COORDS:      200.43,-31.93 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Coordinates.  
  COMMENTS:        This Notice was ground-generated -- not flight-generated.  
  COMMENTS:        TAM values, flux and significance fields are not valid.  
  COMMENTS:        This position was automatically generated on the ground using  
  COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
  COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
  COMMENTS:        The probability that this is a serendipitous source in the  
  COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.  
  

• GCN Circular #14934
  S. R. Oates & M. De Pasquale (UCL-MSSL) report on behalf of the Swift/UVOT Team:
  UVOT took a finding chart exposure of 150 seconds with the White filter of GRB 130627A (trigger= 559132) starting 2979 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 25% of the BAT error circle. The typical 3-sigma upper limit has been about 19.6 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the BAT error circle. The list of sources is typically complete down to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.09.
• GCN Circular #14935
  J.A. Kennea (PSU), G. Tagliaferri (INAF-OAB), S. Campana (INAF-OAB), P.A. Evans (U. Leicester), J.P. Osborne (U. Leicester) and D.N. Burrows (PSU) report on behalf of the Swift-XRT team:
  The XRT began observing the field of GRB 130627A at 09:44:39.3 UT, 2975.9 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 184.41689, -37.08615 which is equivalent to:

     RA(J2000)  = 12h 17m 40.05s
     Dec(J2000) = -37d 05' 10.1"
  

  with an uncertainty of 3.6 arcseconds (radius, 90% containment). This location is 80 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper.
  A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (7.95 x 10^20 cm^-2, Kalberla et al. 2005), with an excess column of 3.9 (+2.51/-2.13) x 10^21 cm^-2 (90% confidence).
• GCN Circular #14941
  D.Byrne (UCD) reports on behalf of the Fermi GBM Team:
  "At 08:55:05.93 UT on 27 June 2013, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 130627A (trigger 394016108 / 130627372), which was also detected by the Swift/BAT (Oates et al. 2013, GCN 14933). The GBM on-ground location is consistent with the Swift position.
  The GBM light curve shows/consists of a multiple pulses, with a duration (T90) of about 28 s (50-300 keV). The time-averaged spectrum from T0-13.31 s to T0+14.34 s is adequately fit by a power law function with an exponential high-energy cutoff. The power law index is -1.4 +/- 0.2 and the cutoff energy, parameterized as Epeak, is 86 +/- 25 keV.
  The event fluence (10-1000 keV) in this time interval is (1.334 +/- 0.185)E-06 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0-1.28 s in the 10-1000 keV band is 2.17 +/- 0.25 ph/s/cm^2.
  The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
• GCN Circular #14945
  J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
  Using 4487 s of XRT Photon Counting mode data and 11 UVOT images for GRB 130627A, 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 = 184.41524, -37.08699 which is equivalent to:

  RA (J2000): 12h 17m 39.66s
  Dec (J2000): -37d 05' 13.2"
  

  with an uncertainty of 1.6 arcsec (radius, 90% confidence).
  This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
  This circular was automatically generated, and is an official product of the Swift-XRT team.
• GCN Circular #14948
  A. Amaral-Rogers (UoL) and S. R. Oates (UCL-MSSL) report on behalf of the Swift-XRT team:
  We have analysed 5.9 ks of XRT data for GRB 130627A (Oates et al. GCN Circ. 14933), from 3.0 ks to 28.5 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN. Circ 14945).
  The light curve can be modelled with a power-law decay with a decay index of alpha=0.87 (+0.18, -0.16).
  A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.4 (+/-0.3). The best-fitting absorption column is 4.2 (+1.2, -1.1) x 10^21 cm^-2, in excess of the Galactic value of 8.0 x 10^20 cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.5 x 10^-11 (8.4 x 10^-11) erg cm^-2 count^-1.
  A summary of the PC-mode spectrum is thus:

  Total column:	     4.2 (+1.2, -1.1) x 10^21 cm^-2
  Galactic foreground: 8.0 x 10^20 cm^-2
  Excess significance: 5.3 sigma
  Photon index:	     2.4 (+/-0.3)
  

  If the light curve continues to decay with a power-law decay index of 0.87, the count rate at T+24 hours will be 6.4 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 2.3 x 10^-13 (5.4 x 10^-13) erg cm^-2 s^-1.
  The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00559132.
  This circular is an official product of the Swift-XRT team.
• GCN Circular #14949
  N. P. M. Kuin and S. R. Oates (UCL-MSSL) report on behalf of the Swift/UVOT team:
  The Swift/UVOT began settled observations of the field of GRB 130627A 2979 s after the BAT trigger (Oates et al., GCN Circ. 14933, GCN Circ 14934).
  No optical afterglow consistent with the (enhanced) XRT position (Kennea et al. GCN Circ. 14935; Osborne et al. GCN Circ. 14945) is detected in the initial UVOT exposures.
  Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are:

  Filter         T_start(s)   T_stop(s)      Exp(s)         Mag
  
  white_FC          2979         3129          147         >20.5
  white             2979        10701         1229         >22.1
  v                 3136         4772          393         >19.7
  b                 3956         9788         1125         >21.3
  u                 3751         5386          393         >20.5
  w1                3546         5182          393         >20.4
  m2                3341         4976          393         >20.4
  w2                4367        11202          684         >21.2
  

  The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.09 in the direction of the burst (Schlegel et al. 1998).
• GCN Circular #14951
  G. Sato (ISAS), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC), S. R. Oates (UCL-MSSL), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
  Using the data set from T-60 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 130627A (trigger #559132) (Oates, et al., GCN Circ. 14933). The BAT ground-calculated position is RA, Dec = 184.415, -37.114 deg which is

    RA(J2000)  =  12h 17m 39.7s
    Dec(J2000) = -37d 06' 51.8"
  

  with an uncertainty of 2.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 20%.
  The mask-weighted light curve shows a single peak starting at ~T-4 sec, peaking at ~T+2 sec, and ending at ~T+26. T90 (15-350 keV) is 30.8 +- 12.3 sec (estimated error including systematics).
  The time-averaged spectrum from T-5.2 to T+33.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.84 +- 0.32. The fluence in the 15-150 keV band is 9.1 +- 1.9 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+1.88 sec in the 15-150 keV band is 1.8 +- 0.5 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/559132/BA/
• GCN Report 475.1
  GCN_Report 475.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_475_1.pdf by S.Oates at UCL-MSSL titled: "Swift Observations of GRB 130627A"