{
  "bibcode": "2020GCN.27098....1B",
  "body": "S. D. Barthelmy (GSFC), M. G. Bernardini (INAF-OAB),  H. A. Krimm (NSF),\n\nS. Laha (GSFC/UMBC), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL),\n\nT. Sakamoto (AGU), M. Stamatikos (OSU), T. N. Ukwatta (LANL) (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 200215A (trigger #956639)\n(Bernardini, et al., GCN Circ. 27079).  The BAT ground-calculated position is\nRA, Dec = 34.100, 12.775 deg which is\n   RA(J2000)  =  02h 16m 24.1s\n   Dec(J2000) = +12d 46' 31.7\"\nwith an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 73%.\n\n\nThe mask-weighted light curve shows a single symmetrical peak from roughly\n\n-10 sec to +6 sec, peaking at T+0 sec. T90 (15-350 keV) is 11.7 +- 2.2 sec\n\n(estimated error including systematics).\n\n\nThe time-averaged spectrum from T-9.97 to T+5.37 sec is best fit by a simple\n\npower-law model.  The power law index of the time-averaged spectrum is\n\n1.41 +- 0.09.  The fluence in the 15-150 keV band is 1.1 +- 0.1 x 10^-6 erg/cm2.\nThe 1-sec peak photon flux measured from T-0.16 sec in the 15-150 keV band\nis 2.7 +- 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/956639/BA/",
  "circularId": 27098,
  "createdOn": 1581853781000,
  "email": "hkrimm@nsf.gov",
  "subject": "GRB 200215A: Swift-BAT refined analysis",
  "submitter": "Hans Krimm at NSF/NASA-GSFC  <hkrimm@nsf.gov>",
  "eventId": "GRB 200215A"
}