{
  "bibcode": "2010GCN.10670....1K",
  "body": "H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC),\nW. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC),\nE. E. Fenimore (LANL), N. Gehrels (GSFC), E. A. Hoversten (PSU),\nC. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), A. M. Parsons (GSFC),\nT. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (GSFC/ORAU),\nJ. Tueller (GSFC), T. N. Ukwatta (GWU)\n(i.e. the Swift-BAT team):\n\nUsing the data set from T-60 to T+243 sec from the recent telemetry\ndownlink, we report further analysis of BAT GRB 100424A (trigger #420367)\n(Hoversten et al., GCN Circ. 10667).  The BAT ground-calculated position\nis RA, Dec = 209.453, 1.512 deg which is\n    RA(J2000)  =  13h 57m 48.6s\n    Dec(J2000) = +01d 30' 44.2\"\nwith an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 88%.\n\nThe mask-weighted lightcurve shows a single broad peak from about T+20\nto T+150 sec.  T90 (15-350 keV) is 104 +- 15.5 sec (estimated error\nincluding systematics).\n\nThe time-averaged spectrum from T+22.3 to T+148.5 sec is best fit by\na simple power-law model.  The power law index of the time-averaged\nspectrum is 1.83 +- 0.13.  The fluence in the 15-150 keV band is\n1.5 +- 0.1 x 10^-06 erg/cm2. The 1-sec peak photon flux measured from\nT+58.28 sec in the 15-150 keV band is 0.4 +- 0.1 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/420367/BA/",
  "circularId": 10670,
  "createdOn": 1272153055000,
  "email": "james.r.cummings@nasa.gov",
  "subject": "GRB 100424A, Swift-BAT refined analysis",
  "submitter": "Jay R. Cummings at NASA/GSFC/Swift  <james.r.cummings@nasa.gov>",
  "eventId": "GRB 100424A"
}