{
  "bibcode": "2020GCN.28801....1K",
  "body": "H. A. Krimm (NSF), S. D. Barthelmy (GSFC),\nS. B. Cenko (GSFC), J. R. Cummings (CPI),\nS. Laha (GSFC/UMBC), A. Y. Lien (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 downlink,\nwe report further analysis of BAT GRB 201027A (trigger #1002158)\n(S. B. Cenko, et al., GCN Circ. 28788).  The BAT ground-calculated position is\nRA, Dec = 155.954, -5.499 deg which is\n   RA(J2000)  =  10h 23m 49.0s\n   Dec(J2000) = -05d 29' 56.8\"\nwith an uncertainty of 1.9 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 44%.\n\nThe BAT light curve showed a complex structure with a duration of about 20 sec.\nT90 (15-350 keV) is 546.73 +- 420.95 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-3.86 to T+960 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.50 +- 0.00.  The fluence in the 15-150 keV band is 0.0 +- 0.0 x 10^-7 erg/cm2.\nThe 1-sec peak photon flux measured from T-0.29 sec in the 15-150 keV band\nis 1.4 +- 0.3 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/1002158/BA/",
  "circularId": 28801,
  "createdOn": 1603934600000,
  "email": "sibasish.laha@nasa.gov",
  "subject": "GRB 201027A: Swift-BAT refined analysis",
  "submitter": "Sibasish Laha at GSFC  <sibasish.laha@nasa.gov>",
  "eventId": "GRB 201027A"
}