{
  "bibcode": "2019GCN.26418....1L",
  "body": "A. Y. Lien (GSFC/UMBC), S. D. Barthelmy (GSFC),\nS. B. Cenko (GSFC), J. R. Cummings (CPI),\nH. A. Krimm (NSF), S. Laha (GSFC/UMBC),\nC. B. Markwardt (GSFC), D. M. Palmer (LANL),\nT. Sakamoto (AGU), M. Stamatikos (OSU),\nT. N. Ukwatta (LANL) (i.e. the Swift-BAT team):\n\nUsing the data set from T-239 to T+963 sec from the recent telemetry\ndownlink,\nwe report further analysis of BAT GRB 191213A (trigger #944091)\n(Cenko et al., GCN Circ. 26398).  The BAT ground-calculated position is\nRA, Dec = 224.530, -9.745 deg which is\n   RA(J2000)  =  14h 58m 07.2s\n   Dec(J2000) = -09d 44' 41.9\"\nwith an uncertainty of 2.2 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 56%.\n\nThe mask-weighted light curve shows some weak emission that starts at ~T-30\ns\nand remains detectable until the burst went out of the BAT FOV at T+139 s.\nIt is likely that the emission continues beyond T+139 s. The burst did not\ncome\nback into the BAT FOV within the next ~ 2 hours.\n\nThe time-averaged spectrum from T-33.52 to T+104.01 sec is best fit by a\nsimple\npower-law model.  The power law index of the time-averaged spectrum is\n1.49 +- 0.16.  The fluence in the 15-150 keV band is 2.1 +- 0.2 x 10^-6\nerg/cm2.\nThe 1-sec peak photon flux measured from T+99.95 sec in the 15-150 keV band\nis 0.5 +- 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/944091/BA/",
  "circularId": 26418,
  "createdOn": 1576292902000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 191213A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 191213A"
}