{
  "bibcode": "2020GCN.28705....1S",
  "body": "T. Sakamoto (AGU), E. Ambrosi (INAF-IASFPA), S. D. Barthelmy (GSFC), \nH. A. Krimm (NSF), S. Laha (GSFC/UMBC), A. Y. Lien (GSFC/UMBC),\nC. B. Markwardt (GSFC), D. M. Palmer (LANL), M. Stamatikos (OSU),\nT. N. Ukwatta (LANL) (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 201020A (trigger #1000926)\n(Ambrosi et al., GCN Circ.28696).  The BAT ground-calculated position is\nRA, Dec = 261.239, 31.428 deg which is \n  RA(J2000)  =  17h 24m 57.4s \n  Dec(J2000) = +31d 25' 41.8\" \nwith an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 90%.\n\nThe mask-weighted light curve shows a single symmetrical peak starting at ~T+8 sec,\npeaking at T+17 sec, and decaying to background by T+26 sec.\nT90 (15-350 keV) is 14.17 +- 4.68 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T+8.23 to T+30.17 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n2.25 +- 0.14.  The fluence in the 15-150 keV band is 9.2 +- 0.7 x 10^-7 erg/cm2.\nThe 1-sec peak photon flux measured from T+17.17 sec in the 15-150 keV band\nis 2.1 +- 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/1000926/BA/",
  "circularId": 28705,
  "createdOn": 1603224490000,
  "email": "hkrimm@nsf.gov",
  "subject": "GRB 201020A: Swift-BAT refined analysis",
  "submitter": "Hans Krimm at NSF/NASA-GSFC  <hkrimm@nsf.gov>",
  "eventId": "GRB 201020A"
}