{
  "bibcode": "2022GCN.32612....1B",
  "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-239 to T+963 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 220930A (trigger #1125809)\n(Cenko et al., GCN Circ. 32603).  The BAT ground-calculated position is\nRA, Dec = 64.725, 13.353 deg which is\n   RA(J2000)  =  04h 18m 54.0s\n   Dec(J2000) = +13d 21' 12.0\"\nwith an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 11%.\n\n\nThe BAT light curve showed a complex structure with a duration of about 200 sec.\nT90 (15-350 keV) is 180.47 +- 104.20 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-0.42 to T+235.67 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.59 +- 0.13.  The fluence in the 15-150 keV band is 5.5 +- 0.4 x 10^-06 erg/cm2.\nThe 1-sec peak photon flux measured from T-0.31 sec in the 15-150 keV band\nis 6.2 +- 1.0 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/1125809/BA/",
  "circularId": 32612,
  "createdOn": 1664681710000,
  "email": "sibasish.laha@nasa.gov",
  "subject": "GRB 220930A: Swift-BAT refined analysis",
  "submitter": "Sibasish Laha at GSFC  <sibasish.laha@nasa.gov>",
  "eventId": "GRB 220930A"
}