{
  "bibcode": "2020GCN.26939....1P",
  "body": "D. M. Palmer (LANL), 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), M. J. Moss (GWU)\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+1079 sec from the recent telemetry\ndownlink,\nwe report further analysis of BAT GRB 200127A (trigger #952791)\n(Moss et al., GCN Circ. 26895).  The BAT ground-calculated position is\nRA, Dec = 295.206, 44.934 deg which is\n   RA(J2000)  =  19h 40m 49.4s\n   Dec(J2000) = +44d 56' 03.5\"\nwith an uncertainty of 2.4 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 50%.\n\nThe mask-weighted light curve shows a long weak emission that starts\naround ~T-150 s and ends at ~T+90 s. T90 (15-350 keV) is 216.9 +- 23.5 sec\n(estimated error including systematics).\n\nThe time-averaged spectrum from T-144.22 to T+92.97 sec is best fit by a\nsimple\npower-law model.  The power law index of the time-averaged spectrum is\n1.64 +- 0.19.  The fluence in the 15-150 keV band is 2.4 +- 0.3 x 10^-6\nerg/cm2.\nThe 1-sec peak photon flux measured from T+41.80 sec in the 15-150 keV band\nis 0.7 +- 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/952791/BA/",
  "circularId": 26939,
  "createdOn": 1580338084000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 200127A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 200127A"
}