{
  "bibcode": "2016GCN.20136....1M",
  "body": "C. B. Markwardt (GSFC), S. D. Barthelmy (GSFC),\nJ. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC),\nH. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC),\nD. M. Palmer (LANL), K. L. Page (U Leicester),\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 161105A (trigger #720697)\n(Page  et al. GCN Circ. 20131).  The BAT ground-calculated position is\nRA, Dec = 120.198, -44.763 deg which is\n  RA(J2000)  =  08h 00m 47.5s\n  Dec(J2000) = -44d 45' 47.6\"\nwith an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 85%.\n\nThe mask-weighted light curve shows a multi-peaked structure that starts\nat ~T-90 s and ends at ~T+160 s. There are roughly two main pulses\nin the structure. The first one contains two obvious peaks at ~T0 and ~T+10s,\nand the second one peaks at ~T+50 s. T90 (15-350 keV) is 177.3 +- 25.8 sec\n(estimated error including systematics).\n\nThe time-averaged spectrum from T-88.00 to T+164.81 sec is best fit by a power law\nwith an exponential cutoff.  This fit gives a photon index 1.02 +- 0.24,\nand Epeak of 159.1 +- 135.3 keV (chi squared 55.64 for 56 d.o.f.).  For this\nmodel the total fluence in the 15-150 keV band is 6.1 +- 0.2 x 10^-6 erg/cm2\nand the 1-sec peak flux measured from T+0.63 sec in the 15-150 keV band is\n1.4 +- 0.2 ph/cm2/sec.  A fit to a simple power law gives a photon index\nof 1.35 +- 0.06 (chi squared 61.67 for 57 d.o.f.).  All the quoted errors\nare at the 90% confidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/720697/BA/",
  "circularId": 20136,
  "createdOn": 1478368226000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 161105A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 161105A"
}