{
  "bibcode": "2016GCN.19091....1P",
  "body": "D. M. Palmer (LANL), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC),\nN. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC),\nC. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), \nM. H. Siegel (PSU), M. Stamatikos (OSU), T. N. Ukwatta (LANL)\n(i.e. the Swift-BAT team):\n \nUsing the data set from T-239 to T+963 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 160225A (trigger #675998)\n(Siegel, et al., GCN Circ. 19075).  The BAT ground-calculated position is\nRA, Dec = 164.217, 53.659 deg which is \n   RA(J2000)  =  10h 56m 52.1s \n   Dec(J2000) = +53d 39' 33.6\" \nwith an uncertainty of 1.9 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 35%.\n \nThe mask-weighted light curve shows a multiple peak structure starting \nat T0-30 sec and ending at T0+50 sec.  Although there is a hint of \na emission after T0+100 sec, no data are available after T0+150 sec because \nthe spacecraft slewed away to the GRB.  T90 (15-350 keV) is 157 +- 70 sec \n(estimated error including systematics).\n \nThe time-averaged spectrum from T-30.38 to T+135.29 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.55 +- 0.23.  The fluence in the 15-150 keV band is 1.6 +- 0.2 x 10^-6 erg/cm2.\nThe 1-sec peak photon flux measured from T+37.13 sec in the 15-150 keV band\nis 1.0 +- 0.2 ph/cm2/sec.  All the quoted errors are at the 90% confidence\nlevel. \n \nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/675998/BA/",
  "circularId": 19091,
  "createdOn": 1456499768000,
  "email": "tsakamoto@phys.aoyama.ac.jp",
  "subject": "GRB 160225A: Swift-BAT refined analysis",
  "submitter": "Takanori Sakamoto at AGU  <tsakamoto@phys.aoyama.ac.jp>",
  "eventId": "GRB 160225A"
}