{
  "subject": "GRB 240102A: Swift-BAT refined analysis",
  "circularId": 35476,
  "submitter": "Amy <yarleen@gmail.com>",
  "createdOn": 1704324807701,
  "submittedHow": "email",
  "bibcode": "2024GCN.35476....1M",
  "body": "M. J. Moss (GSFC), S. D. Barthelmy (GSFC),\nJ.D. Gropp (PSU), H. A. Krimm (NSF),\nS. Laha (GSFC/UMBC), A. Y. Lien (U Tampa),\nC. B. Markwardt (GSFC), D. M. Palmer (LANL),\nT. Parsotan (GSFC), T. Sakamoto (AGU),\nM. Stamatikos (OSU) (i.e. the Swift-BAT team):\n\nUsing the data set from T-60 to T+243 sec from the recent telemetry\ndownlink, we report further analysis of BAT GRB 240102A (trigger #1205899)\n(Gropp et al., GCN Circ. 35461).  The BAT ground-calculated position is\nRA, Dec = 96.848, -20.011 deg which is\n   RA(J2000)  =  06h 27m 23.5s\n   Dec(J2000) = -20d 00' 39.0\"\nwith an uncertainty of 2.4 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 100%.\n\nThe mask-weighted light curve show some weak emission that starts at ~T+8 s\nand ends at ~T+140 s. T90 (15-350 keV) is 119.00 +- 30.59 sec\n(estimated error including systematics).\n\nThe time-averaged spectrum from T+8.00 to T+142.00 sec is best fit by a\nsimple\npower-law model.  The power law index of the time-averaged spectrum is\n2.00 +- 0.22.  The fluence in the 15-150 keV band is 8.5 +- 1.3 x 10^-7\nerg/cm2.\nThe 1-sec peak photon flux measured from T+65.00 sec in the 15-150 keV band\nis 0.4 +- 0.1 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/1205899/BA/\n",
  "eventId": "GRB 240102A"
}