Gamma-ray Burst 160519A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 19 May 16 00:17:49 UT
  NOTICE_TYPE:     Swift-BAT GRB Position
  TRIGGER_NUM:     686818,   Seg_Num: 0
  GRB_RA:           71.113d {+04h 44m 27s} (J2000),
                    71.375d {+04h 45m 30s} (current),
                    70.314d {+04h 41m 15s} (1950)
  GRB_DEC:         +31.197d {+31d 11' 48"} (J2000),
                   +31.226d {+31d 13' 33"} (current),
                   +31.105d {+31d 06' 17"} (1950)
  GRB_ERROR:       3.00 [arcmin radius, statistical only]
  GRB_INTEN:       1738 [cnts]    Image_Peak=80 [image_cnts]
  TRIGGER_DUR:     0.512 [sec] 
  TRIGGER_INDEX:   69     E_range: 15-50 keV
  BKG_INTEN:       22787 [cnts]
  BKG_TIME:        1039.71 SOD {00:17:19.71} UT
  BKG_DUR:         8 [sec]
  GRB_DATE:        17527 TJD;   140 DOY;   16/05/19
  GRB_TIME:        1053.53 SOD {00:17:33.53} UT
  GRB_PHI:         -55.34 [deg]
  GRB_THETA:        41.47 [deg]
  SOLN_STATUS:     0x20000003
  RATE_SIGNIF:     8.36 [sigma]
  IMAGE_SIGNIF:    7.39 [sigma]
  MERIT_PARAMS:     +1  +0  +0  -1  +1  -3 -100  +1 -95  +0 
  SUN_POSTN:        56.23d {+03h 44m 54s}  +19.82d {+19d 48' 59"}
  SUN_DIST:         17.77 [deg]   Sun_angle= -1.0 [hr] (East of Sun)
  MOON_POSTN:      206.06d {+13h 44m 14s}   -7.55d {-07d 32' 51"}
  MOON_DIST:       131.62 [deg]
  MOON_ILLUM:      93 [%]
  GAL_COORDS:      170.45, -9.46 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:       73.73,  8.82 [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 = 196.27,19.24 [deg].  
  COMMENTS:           
  COMMENTS:        NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=485309857).  
  

• red DSS finding chart ps-file
  
  
• GCN NOTICE
  

  TITLE:           GCN/FERMI NOTICE
  NOTICE_DATE:     Thu 19 May 16 00:18:01 UT
  NOTICE_TYPE:     Fermi-GBM Flight Position
  RECORD_NUM:      44
  TRIGGER_NUM:     485309857
  GRB_RA:           96.283d {+06h 25m 08s} (J2000),
                    96.569d {+06h 26m 17s} (current),
                    95.410d {+06h 21m 38s} (1950)
  GRB_DEC:         +40.083d {+40d 04' 60"} (J2000),
                   +40.073d {+40d 04' 23"} (current),
                   +40.112d {+40d 06' 42"} (1950)
  GRB_ERROR:       17.47 [deg radius, statistical plus systematic]
  GRB_INTEN:       158 [cnts/sec]
  DATA_SIGNIF:     7.80 [sigma]
  INTEG_TIME:      1.024 [sec]
  GRB_DATE:        17527 TJD;   140 DOY;   16/05/19
  GRB_TIME:        1053.55 SOD {00:17:33.55} UT
  GRB_PHI:           0.00 [deg]
  GRB_THETA:        30.00 [deg]
  DATA_TIME_SCALE: 1.0240 [sec]
  HARD_RATIO:      1.18
  LOC_ALGORITHM:   3 (version number of)
  MOST_LIKELY:      89%  GRB
  2nd_MOST_LIKELY:   8%  Solar Flare
  DETECTORS:       0,0,0, 1,0,1, 0,0,0, 0,0,0, 0,0,
  SUN_POSTN:        56.23d {+03h 44m 55s}  +19.82d {+19d 48' 59"}
  SUN_DIST:         39.92 [deg]   Sun_angle= -2.7 [hr] (East of Sun)
  MOON_POSTN:      206.06d {+13h 44m 15s}   -7.55d {-07d 32' 53"}
  MOON_DIST:       109.74 [deg]
  MOON_ILLUM:      93 [%]
  GAL_COORDS:      174.04, 12.45 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:       95.02, 16.75 [deg] ecliptic lon,lat of the burst (or transient)
  LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2016/bn160519012/quicklook/glg_lc_medres34_bn160519012.gif
  COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
  COMMENTS:        This trigger occurred at longitude,latitude = 281.55,-1.03 [deg].  
  COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.  
  COMMENTS:           
  COMMENTS:        NOTE: This GBM event is temporally(0.0<100sec) coincident with the SWIFT_BAT event (trignum=686818).  
  

• GCN NOTICE
  

  TITLE:           GCN/FERMI NOTICE
  NOTICE_DATE:     Thu 19 May 16 00:18:15 UT
  NOTICE_TYPE:     Fermi-GBM Ground Position
  RECORD_NUM:      56
  TRIGGER_NUM:     485309857
  GRB_RA:           85.840d {+05h 43m 22s} (J2000),
                    86.123d {+05h 44m 30s} (current),
                    84.976d {+05h 39m 54s} (1950)
  GRB_DEC:         +38.820d {+38d 49' 12"} (J2000),
                   +38.826d {+38d 49' 35"} (current),
                   +38.798d {+38d 47' 52"} (1950)
  GRB_ERROR:       9.73 [deg radius, statistical only]
  DATA_SIGNIF:     10.00 [sigma]
  DATA_INTERVAL:   2.048 [sec]
  GRB_DATE:        17527 TJD;   140 DOY;   16/05/19
  GRB_TIME:        1053.55 SOD {00:17:33.55} UT
  GRB_PHI:         357.00 [deg]
  GRB_THETA:        38.00 [deg]
  E_RANGE:         44.032 - 279.965 [keV]
  LOC_ALGORITHM:   4153 (Gnd S/W Version number)
  SUN_POSTN:        56.23d {+03h 44m 55s}  +19.82d {+19d 48' 59"}
  SUN_DIST:         32.01 [deg]   Sun_angle= -2.0 [hr] (East of Sun)
  MOON_POSTN:      206.06d {+13h 44m 15s}   -7.55d {-07d 32' 55"}
  MOON_DIST:       117.89 [deg]
  MOON_ILLUM:      93 [%]
  GAL_COORDS:      171.31,  4.75 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:       86.64, 15.43 [deg] ecliptic lon,lat of the burst (or transient)
  LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2016/bn160519012/quicklook/glg_lc_medres34_bn160519012.gif
  POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_485309857.fits
  COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
  COMMENTS:        In the LAT Field-of-view.  
  COMMENTS:        This Notice was ground-generated -- not flight-generated.  
  COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
  COMMENTS:        The POS_MAP_URL file will not be created/available until ~4 min after the notice.  
  COMMENTS:           
  COMMENTS:        NOTE: This GBM event is temporally(0.0<100sec) coincident with the SWIFT_BAT event (trignum=686818).  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Thu 19 May 16 00:21:03 UT
  NOTICE_TYPE:     Swift-BAT GRB Lightcurve
  TRIGGER_NUM:     686818,   Seg_Num: 0
  GRB_RA:           71.113d {+04h 44m 27s} (J2000),
                    71.375d {+04h 45m 30s} (current),
                    70.314d {+04h 41m 15s} (1950)
  GRB_DEC:         +31.197d {+31d 11' 48"} (J2000),
                   +31.226d {+31d 13' 33"} (current),
                   +31.105d {+31d 06' 17"} (1950)
  GRB_DATE:        17527 TJD;   140 DOY;   16/05/19
  GRB_TIME:        1053.53 SOD {00:17:33.53} UT
  TRIGGER_INDEX:   69
  GRB_PHI:         -55.34 [deg]
  GRB_THETA:        41.47 [deg]
  DELTA_TIME:      58.00 [sec]
  TRIGGER_DUR:     0.512 [sec] 
  SOLN_STATUS:     0x3
  RATE_SIGNIF:     8.36 [sigma]
  IMAGE_SIGNIF:    7.39 [sigma]
  LC_URL:          sw00686818000msb.lc
  SUN_POSTN:        56.23d {+03h 44m 55s}  +19.82d {+19d 49' 01"}
  SUN_DIST:         17.77 [deg]   Sun_angle= -1.0 [hr] (East of Sun)
  MOON_POSTN:      206.08d {+13h 44m 20s}   -7.56d {-07d 33' 19"}
  MOON_DIST:       131.65 [deg]
  MOON_ILLUM:      93 [%]
  GAL_COORDS:      170.45, -9.46 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:       73.73,  8.82 [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 = 196.27,19.24 [deg].
  

  
• GCN Circular #19436
  P. D'Avanzo (INAF-OAB), S. D. Barthelmy (GSFC) and J. A. Kennea (PSU) report on behalf of the Swift Team:
  At 00:17:33 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 160519A (trigger=686818). Swift did not slew due to Sun constraint. The BAT on-board calculated location is RA, Dec 71.113, +31.197, which is

     RA(J2000)  =  04h 44m 27s
     Dec(J2000) = +31d 11' 48"
  

  with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a single, possibly multiple, peaks with a duration of about 6 sec. The peak count rate was ~1500 counts/sec (15-350 keV), at ~0 sec after the trigger.
  Due to a Sun observing constraint, Swift cannot slew to the BAT position until 11:24 UT on 2016 July 22. There will thus be no XRT or UVOT data for this trigger before this time.
  Burst Advocate for this burst is P. D'Avanzo (paolo.davanzo AT brera.inaf.it). 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 #19439
  P Veres (UAH) and C Meegan (UAH) report on behalf of the Fermi GBM Team:
  "At 2016-05-19 00:17:33.55 UT on 19 May 2016, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 160519A (trigger 485309857 / 160519012), which was also detected by Swift (D'Avanzo et al., GCN 19436). The GBM on-ground location is consistent with the Swift position.
  The angle from the Fermi LAT boresight to the best location is 52 degrees.
  The GBM light curve consists of multiple, weak emission episodes with a duration (T90) of about 97 s (50-300 keV). The time-averaged spectrum from T0-3.6 s to T0+40.4 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.97 +/- 0.25 and the cutoff energy, parameterized as Epeak, is 61.7 +/- 7.3 keV.
  The event fluence (10-1000 keV) in this time interval is (1.4 +/- 0.1)E-6 erg/cm^2. The 1-sec peak photon flux measured starting from T0-0.2 s in the 10-1000 keV band is 3.3 +/- 0.2 ph/s/cm^2.
  A Band function fits the spectrum equally well with Epeak = 51 +/- 11 keV, alpha = -0.67 +/- 0.51 and beta = -2.51 +/- 0.36.
  The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
• GCN Circular #19441
  M. Stamatikos (OSU), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC), P. D'Avanzo (INAF-OAB), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team):
  Using the data set from T-240 to T+962 sec from the recent telemetry downlink, we report further analysis of BAT GRB 160519A (trigger #686818) (D'Avanzo, et al., GCN Circ. 19436). The BAT ground-calculated position is RA, Dec = 71.122, 31.246 deg which is

    RA(J2000)  =  04h 44m 29.2s
    Dec(J2000) = +31d 14' 46.1"
  

  with an uncertainty of 2.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 19%.
  The mask-weighted light curve shows a single-pulse structure that starts at ~ T-1 s, peaks at ~T0, and ends at ~T+3 s. There are some weak emissions extend till ~T+40 s. T90 (15-350 keV) is 35.57 +- 6.11 sec (estimated error including systematics).
  The time-averaged spectrum from T-0.99 to T+41.12 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.95 +- 0.25. The fluence in the 15-150 keV band is 1.2 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T-0.16 sec in the 15-150 keV band is 2.4 +- 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/686818/BA/
• GCN Circular #19533
  K. P. Mooley, T. D. Staley, R. P. Fender (Oxford), G. E. Anderson (Curtin), T. Cantwell (Manchester), C. Rumsey, D. Titterington, S. H. Carey, J. Hickish, Y. C. Perrott, N. Razavi-Ghods, P. Scott (Cambridge), K. Grainge, A. Scaife (Manchester)
  The AMI Large Array robotically triggered on the Swift alert for GRB 160519A (D'Avanzo et al., GCN 19436) as part of the 4pisky program, and subsequent follow up observations were obtained up to 10 days post-burst. Our observations at 15 GHz on 2016 May 19.35, May 20.50, May 22.61, May 26.50, and May 29.49 (UT) do not reveal any variable radio source within the BAT error circle (Stamatikos et al., GCN 19441), with 3sigma upper limits of 202 uJy, 72 uJy, 84 uJy, 87 uJy, and 87 uJy respectively.
  We thank the AMI staff for scheduling these observations. The AMI-GRB database is a log of all GRB follow up observations with the AMI, and is available at http://4pisky.org/ami-grb/.