{
  "submitter": "Sibasish Laha at NASA-GSFC <slaha@umbc.edu>",
  "circularId": 34333,
  "eventId": "GRB 230802A",
  "submittedHow": "email-legacy",
  "bibcode": "2023GCN.34333....1B",
  "createdOn": 1691158161799,
  "body": "S. D. Barthelmy (GSFC), H. A. Krimm (NSF),\nS. Laha (GSFC/UMBC), A. Y. Lien (U Tampa),\nC. B. Markwardt (GSFC),D. M. Palmer (LANL),\nT. Parsotan (GSFC/UMBC),T. Sakamoto (AGU),\nM. Stamatikos (OSU) (i.e. the Swift-BAT team):\n\nUsing the data set from T-240 to T+962 sec from the recent telemetry\ndownlink,\nwe report further analysis of BAT GRB 230802A (trigger #1182085)\n(Klingler et al., GCN Circ. 34313).  The BAT ground-calculated position is\nRA, Dec = 76.232, 19.552 deg which is\n   RA(J2000)  =  05h 04m 55.6s\n   Dec(J2000) = +19d 33' 06.3\"\nwith an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 99%.\n\nThe BAT  light curve shows a complex structure with a duration of ~ 200 sec.\nT90 (15-350 keV) is 175.62 +- 18.26 sec (estimated error including\nsystematics).\n\nThe time-averaged spectrum from T-6.04 to T+230.70 sec is best fit by a\nsimple\npower-law model.  The power law index of the time-averaged spectrum is\n1.60 +- 0.07.  The fluence in the 15-150 keV band is 5.0 +- 0.2 x 10^-06\nerg/cm2.\nThe 1-sec peak photon flux measured from T+0.60 sec in the 15-150 keV band\nis 2.3 +- 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/1182085/BA/\n",
  "subject": "GRB 230802A: Swift-BAT refined analysis"
}