{
  "bibcode": "2021GCN.30186....1B",
  "body": "S. D. Barthelmy (GSFC),  J. R. Cummings (CPI),\nH. A. Krimm (NSF), S. Laha (GSFC/UMBC),\nA. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC),\nK. L. Page (U Leicester), 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-240 to T+963 sec from the recent telemetry\ndownlink, we report further analysis of BAT GRB 210610A (trigger #1054627)\n(Page et al., GCN Circ. 30160).  The BAT ground-calculated position is\nRA, Dec = 204.284, 14.476 deg which is\n   RA(J2000)  =  13h 37m 08.2s\n   Dec(J2000) = +14d 28' 32.5\"\nwith an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 26%.\n\nThe mask-weighted light curve shows a structure with two overlapping pulses\nthat starts at ~T-6 s and ends at ~T+11 s. The two peaks occur at\n~T-2 s and ~T0, respectively. T90 (15-350 keV) is 13.62 +- 3.15 sec\n(estimated error including systematics).\n\nThe time-averaged spectrum from T-5.98 to T+11.35 sec is best fit by\na simple power-law model.  The power law index of the time-averaged\nspectrum is 1.41 +- 0.19.  The fluence in the 15-150 keV band is\n1.0 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from\nT-0.29 sec in the 15-150 keV band is 2.5 +- 0.4 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/1054627/BA/",
  "circularId": 30186,
  "createdOn": 1623373339000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 210610A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 210610A"
}