{
  "bibcode": "2023GCN.33194....1M",
  "body": "C. B. Markwardt (GSFC),S. D. Barthelmy (GSFC),\nH. A. Krimm (NSF), S. Laha (GSFC/UMBC),\nA. Y. Lien (U Tampa), D. M. Palmer (LANL),\nT. Parsotan (GSFC/UMBC),T. Sakamoto (AGU),\nM. Stamatikos (OSU) (i.e. the Swift-BAT team):\n\nUsing the data set from T-240 to T+962 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 230116D (trigger #1149293)\n(Sonbas et al., GCN Circ. 33176).  The BAT ground-calculated position is\nRA, Dec = 98.584, 49.831 deg which is\n   RA(J2000)  =  06h 34m 20.1s\n   Dec(J2000) = +49d 49' 50.3\"\nwith an uncertainty of 2.9 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 98%.\n\nThe BAT light curve showed a complex structure with a duration of about 40 sec.\nT90 (15-350 keV) is 41.00 +- 11.18 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T+1.14 to T+53.144 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.38 +- 0.22.  The fluence in the 15-150 keV band is 8.12 +- 1.2 x 10^-07 erg/cm2.\nThe 1-sec peak photon flux measured from T+12.14 sec in the 15-150 keV band\nis 0.6 +- 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/1149293/BA/",
  "circularId": 33194,
  "createdOn": 1674080667000,
  "email": "sibasish.laha@nasa.gov",
  "subject": "GRB 230116D: Swift-BAT refined analysis",
  "submitter": "Sibasish Laha at GSFC  <sibasish.laha@nasa.gov>",
  "eventId": "GRB 230116D"
}