{
  "bibcode": "2015GCN.18013....1C",
  "body": "J. R. Cummings (GSFC/UMBC), S. D. Barthelmy (GSFC), N. Gehrels (GSFC),\nH. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC),\nD. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU),\nT. N. Ukwatta (LANL)\n(i.e. the Swift-BAT team):\n  \nUsing the data set from T-47 to T+50 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 150710B.  (Cummings, et al., GCN Circ.\n18009).  The refined BAT position is RA, Dec = 83.191, -46.960 deg, which is\n    RA(J2000)  =  05h 32m 45.8s\n    Dec(J2000) = -46d 57' 34\"\nwith an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 100%.\n  \nThe mask-weighted light curve shows 6 overlapping but well-defined peaks\nfollowed by an exponential decay to background.  T90 (15-350 keV) is\n15 +- 1 sec (estimated error including systematics).\n  \nThe time-averaged spectrum from T+0 to T+15 sec is best fit by a model of a\npower law with an exponential cutoff.  The photon index of the time-averaged\nspectrum is 0.99 +- 0.09.  Epeak was 166 +- 28 keV.  Using this model, the\nfluence in the 15-150 keV band was (3.5 +- 0.1) x 10^-6 ergs/cm^2.  A simple\npower-law fit has a photon index of 1.34 +- 0.02.\n\nThe 1-sec peak photon flux measured from T+3.5 sec in the 15-150 keV band\nwas 8.3 +- 0.3 ph/cm2/sec.  All the quoted errors are at the 90% confidence\nlevel.\n\nA Swift TOO is being executed (Evans, GCN #18010).\n\nBecause this was a ground-detected burst, the usual automated BAT data\nproducts are not available.",
  "circularId": 18013,
  "createdOn": 1436656690000,
  "email": "james.r.cummings@nasa.gov",
  "subject": "GRB 150710B refined analysis",
  "submitter": "Jay R. Cummings at NASA/GSFC/Swift  <james.r.cummings@nasa.gov>",
  "eventId": "GRB 150710B"
}