{
  "bibcode": "2009GCN..9364....1B",
  "body": "S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),\nA. P. Beardmore (U Leicester), J. R. Cummings (GSFC/UMBC),\nE. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA),\nC. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC),\nG. Sato (ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC),\nT. N. Ukwatta (GWU)\n(i.e. the Swift-BAT team):\n \nUsing the data sets from T-60 to T+243 sec from recent telemetry downlinks,\nwe report further analysis of BAT GRB 090515 (trigger #352108)\n(Beardmore, et al., GCN Circ. 9356).  The BAT ground-calculated position is\nRA, Dec = 164.166, 14.469 deg, which is \n   RA(J2000)  =  10h 56m 39.8s \n   Dec(J2000) = +14d 28' 09.5\" \nwith an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 86%.\n \nThe mask-weighted light curve shows a single peak with a slightly longer\nfall time than rise time. The total width is about 0.075 sec.\nT90 (15-350 keV) is 0.036 +- 0.016 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T+0.008 to T+0.056 sec is best fit by\na simple power-law model.  The power law index of the time-averaged\nspectrum is 1.6 +- 0.2.  The fluence in the 15-150 keV band is\n2.1 +- 0.4 x 10^-8 erg/cm2.  The 1-sec peak photon flux measured from\nT-0.30 sec in the 15-150 keV band is 5.7 +- 0.9 ph/cm2/sec.  All the\nquoted errors are at the 90% confidence level.\n \nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/352108/BA/",
  "circularId": 9364,
  "createdOn": 1242391498000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 090515: Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 090515"
}