{
  "bibcode": "2021GCN.29297....1S",
  "body": "M. Stamatikos (OSU), E. Ambrosi (INAF-IASFPA),\nS. D. Barthelmy (GSFC), H. A. Krimm (NSF),\nS. Laha (GSFC/UMBC), A. Y. Lien (GSFC/UMBC),\nC. B. Markwardt (GSFC), D. M. Palmer (LANL),\nT. Sakamoto (AGU), T. N. Ukwatta (LANL)\n(i.e. the Swift-BAT team):\n\nUsing the data set from T-239 to T+963 sec from the recent telemetry\ndownlink, we report further analysis of BAT GRB 210112A (trigger #1016881)\n(Ambrosi et al., GCN Circ. 29289).  The BAT ground-calculated position is\nRA, Dec = 219.005, 33.058 deg which is\n   RA(J2000)  =  14h 36m 01.3s\n   Dec(J2000) = +33d 03' 30.4\"\nwith an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 89%.\n\nThe mask-weighted light curve shows a multi-peaked structure that starts\nat ~T-10 s and ends at ~T+220 s. The three main peaks occur at ~T+1 s,\n~T+70 s, and ~T+105 s, respectively, and the one at ~T+70 s is the largest\npeak.\nT90 (15-350 keV) is 107.60 +- 13.02 sec (estimated error including\nsystematics).\n\nThe time-averaged spectrum from T-10.44 to T+218.47 sec is best fit by\na simple power-law model.  The power law index of the time-averaged\nspectrum  is 1.45 +- 0.03.  The fluence in the 15-150 keV band is\n2.33 +- 0.03 x 10^-5 erg/cm2. The 1-sec peak photon flux measured from\nT+68.86 sec in the 15-150 keV band is 20.5 +- 0.6 ph/cm2/sec.\nAll the quoted errors are at the 90% confidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/1016881/BA/",
  "circularId": 29297,
  "createdOn": 1610502313000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 210112A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 210112A"
}