{
  "bibcode": "2021GCN.29918....1K",
  "body": "H. A. Krimm (NSF), S. D. Barthelmy (GSFC),\nJ. R. Cummings (CPI), S. Laha (GSFC/UMBC),\nA. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC),\nD. M. Palmer (LANL), T. Sakamoto (AGU),\nB. Sbarufatti (PSU), M. Stamatikos (OSU),\nT. N. Ukwatta (LANL) (i.e. the Swift-BAT team):\n\nUsing the data set from T-240 to T+962 sec from the recent telemetry\ndownlink, we report further analysis of BAT GRB 210430A (trigger #1046014)\n(Sbarufatti et al., GCN Circ. 29914).  The BAT ground-calculated\nposition is RA, Dec = 57.185, 45.080 deg which is\n   RA(J2000)  =  03h 48m 44.3s\n   Dec(J2000) = +45d 04' 46.9\"\nwith an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 25%.\n\nThe mask-weighted light curve shows a single-peaked structure\nthat starts at ~T-3 s, peaks at ~T+2 s, and ends at ~T+15 s.\nT90 (15-350 keV) is 11.53 +- 2.83 sec (estimated error including\nsystematics).\n\nThe time-averaged spectrum from T-2.72 to T+14.60 sec is best fit\nby a simple power-law model.  The power law index of the time-averaged\nspectrum is 2.15 +- 0.21.  The fluence in the 15-150 keV band is\n9.9 +- 1.3 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from\nT+1.14 sec in the 15-150 keV band is 1.9 +- 0.4 ph/cm2/sec.  All the\nquoted errors are at the 90% confidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/1046014/BA/",
  "circularId": 29918,
  "createdOn": 1619827331000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 210430A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 210430A"
}