{
  "body": "T. Sakamoto (AGU), S. D. Barthelmy (GSFC),\nH. A. Krimm (NSF), S. Laha (GSFC/UMBC),\nA. Y. Lien (U Tampa), C. B. Markwardt (GSFC),\nD. M. Palmer (LANL), T. Parsotan (GSFC/UMBC),\nM. Stamatikos (OSU)(i.e. the Swift-BAT team):\n\n\n\nUsing the data set from T-240 to T+962 sec from the recent telemetry downlink,\nwe have found that BAT trigger #1165354 is a GRB 230423A even though\nthe original GCN Circular (Brivio et al., GCN Circ. 33677) based on the immediately\navailable data suggested that it was probably a statistical fluctuation.\n The BAT ground-calculated position is\nRA, Dec = 122.618, -21.901 deg which is\n   RA(J2000)  =  08h 10m 28.2s\n   Dec(J2000) = -21d 54' 03.6\"\nwith an uncertainty of 2.3 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 100%.\n\nThe BAT light curve showed a complex structure with a duration of about 30 sec.\nT90 (15-350 keV) is 23.60 +- 4.27 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-2.25 to T+24.49 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.69 +- 0.27.  The fluence in the 15-150 keV band is 4.6 +- 0.8 x 10^-07 erg/cm2.\nThe 1-sec peak photon flux measured from T+10.62 sec in the 15-150 keV band\nis 0.6 +- 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/1165354/BA/\n\n\n",
  "circularId": 33694,
  "subject": "GRB 230423A(trigger #1165354): Swift-BAT refined analysis",
  "submitter": "Sibasish Laha at GSFC <sibasish.laha@nasa.gov>",
  "createdOn": 1682630495240,
  "bibcode": "2023GCN.33694....1S",
  "eventId": "GRB 230423A"
}