{
  "bibcode": "2021GCN.29534....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),\nK. K. Simpson (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 210217A (trigger #1033264)\n(Simpson et al., GCN Circ. 29521).  The BAT ground-calculated position is\nRA, Dec = 97.578, 68.715 deg which is\n   RA(J2000)  =  06h 30m 18.6s\n   Dec(J2000) = +68d 42' 55.4\"\nwith an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 30%.\n\nThe mask-weighted light curve shows a single-peaked FRED-like structure\nthat starts and peaks at ~T0, and ends at ~T+5 s. T90 (15-350 keV) is\n4.22 +- 1.15 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-0.65 to T+4.89 sec is best fit by\na simple power-law model.  The power law index of the time-averaged\nspectrum is 2.01 +- 0.16.  The fluence in the 15-150 keV band\nis 6.8 +- 0.7 x 10^-7 erg/cm2. The 1-sec peak photon flux measured\nfrom T-0.13 sec in the 15-150 keV band is 5.1 +- 0.5 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/1033264/BA/",
  "circularId": 29534,
  "createdOn": 1613671292000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 210217A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 210217A"
}