{
  "body": "D. Sadaula (GSFC/UMBC), S. D. Barthelmy (GSFC), \nR. Gupta (GSFC), H. A. Krimm (NSF),\nS. Laha (GSFC/UMBC), A. Y. Lien (U Tampa),\nC. B. Markwardt (GSFC), A. Mei (INAF-OAB)\nM. J. Moss (GSFC), D. M. Palmer (LANL),\nT. Parsotan (GSFC), T. Sakamoto (AGU)\n(i.e. the Swift-BAT team):\n \nUsing the data set from T-240 to T+963 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 251112A (trigger #1413695)\n(Mei, et al., GCN Circ. 42656).  The BAT ground-calculated position is\nRA, Dec = 274.081, 24.158 deg which is \n   RA(J2000)  =  18h 16m 19.5s \n   Dec(J2000) = +24d 09' 28.8\" \nwith an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 100%.\n \nThe mask-weighted BAT light curve shows multi-peaked emission starting ~T-28 sec.\nT90 (15-350 keV) is 55.42 +- 6.65 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T-28.30 to T+32.38 sec is best fit by a power law\nwith an exponential cutoff.  This fit gives a photon index 0.77 +- 0.75, \nand Epeak of 48.4 +- 11.9 keV (chi squared 86.37 for 56 d.o.f.).  For this\nmodel the total fluence in the 15-150 keV band is 7.6 +- 0.9 x 10^-07 erg/cm2\nand the 1-sec peak flux measured from T+1.05 sec in the 15-150 keV band is\n0.7 +- 0.1 ph/cm2/sec.  A fit to a simple power law gives a photon index\nof 1.86 +- 0.15 (chi squared 94.39 for 57 d.o.f.).  All the quoted errors\nare at the 90% confidence level. \n \nThe results of the batgrbproduct analysis are available at\nhttps://swift.gsfc.nasa.gov/results/batgrbcat/BAT_refined_circular/1413695",
  "subject": "GRB 251112A: Swift-BAT refined analysis",
  "submittedHow": "web",
  "circularId": 42686,
  "eventId": "GRB 251112A",
  "format": "text/plain",
  "createdOn": 1763152639667,
  "submitter": "Rahul Gupta at NASA GSFC <rahul.gupta@nasa.gov>",
  "bibcode": "2025GCN.42686....1S"
}