{
  "bibcode": "2021GCN.29856....1S",
  "body": "T. Sakamoto (AGU), S. D. Barthelmy (GSFC),\nJ. R. Cummings (CPI), H. A. Krimm (NSF),\nS. Laha (GSFC/UMBC), A. Y. Lien (GSFC/UMBC),\nC. B. Markwardt (GSFC), D. M. Palmer (LANL),\nM. Stamatikos (OSU), T. N. Ukwatta (LANL)\n(i.e. the Swift-BAT team):\n\nUsing the data set from T-60 to T+243 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 210419C (trigger #1044236)\n(Moss et al., GCN Circ. 29834).  The BAT ground-calculated position is\nRA, Dec = 212.969, 36.011 deg which is\n   RA(J2000)  =  14h 11m 52.6s\n   Dec(J2000) = +36d 00' 40.5\"\nwith an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 72%.\n\nThe BAT light curve showed a complex structure with a duration of about ~70 sec.\nT90 (15-350 keV) is 73.00 +- 16.40 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T+16.00 to T+102.00 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n2.50 +- 0.27.  The fluence in the 15-150 keV band is 8.1 +- 1.2 x 10^-07 erg/cm2.\nThe 1-sec peak photon flux measured from T+48.00 sec in the 15-150 keV band\nis 0.8 +- 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/1044236/BA/",
  "circularId": 29856,
  "createdOn": 1618975982000,
  "email": "sibasish.laha@nasa.gov",
  "subject": "GRB 210419C: Swift-BAT refined analysis",
  "submitter": "Sibasish Laha at GSFC  <sibasish.laha@nasa.gov>",
  "eventId": "GRB 210419C"
}