{
  "bibcode": "2008GCN..8236....1M",
  "body": "K. McLean (GSFC/UMD), S. D. Barthelmy (GSFC), W. Baumgartner (GSFC/UMBC),\nJ. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC),\nH. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL),\nA. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS),\nM. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU),\nH. Ziaeepour (UCL-MSSL)\n(i.e. the Swift-BAT team):\n \nUsing the data set from T-28 to T+930 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 080915B (trigger #324805)\n(Ziaeepour, et al., GCN Circ. 8234).  The BAT ground-calculated position is\nRA, Dec = 213.088, -11.491 deg, which is \n   RA(J2000)  =  14h 12m 21.2s \n   Dec(J2000) = -11d 29' 26.9\" \nwith an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 74%.\n \nThe mask-weighted light curve shows a roughly symmetric peak starting\nat ~T-0.5 sec, peaking at ~T+0.6 sec, and ending at ~T+4.5 sec.\nT90 (15-350 keV) is 3.9 +- 0.7 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T-0.5 to T+6.1 sec is best fit by a power law\nwith an exponential cutoff.  This fit gives a photon index 1.48 +- 0.35, \nand Epeak of 42.3 +- 9.1 keV (chi squared 54.5 for 56 d.o.f.).  For this\nmodel the total fluence in the 15-150 keV band is 9.9 +- 0.6 x 10^-7 erg/cm2\nand the 1-sec peak flux measured from T+0.18 sec in the 15-150 keV band is\n8.5 +- 0.3 ph/cm2/sec.  A fit to a simple power law gives a photon index\nof 2.02 +- 0.08 (chi squared 62.6 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/324805/BA/",
  "circularId": 8236,
  "createdOn": 1221508170000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 080915B, Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 080915B"
}