{
  "bibcode": "2015GCN.17761....1B",
  "body": "S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),\nA. P. Beardmore (U Leicester), J. R. Cummings (GSFC/UMBC),\nN. Gehrels (GSFC), H. A. Krimm (GSFC/USRA),\nA. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC),\nD. M. Palmer (LANL), T. Sakamoto (AGU),\nM. Stamatikos (OSU), T. N. Ukwatta (LANL)\n(i.e. the Swift-BAT team):\n\nUsing the data set from T-240 to T+963 sec from the recent\ntelemetry downlink, we report further analysis of BAT\nGRB 150424A (trigger #638946) (Beardmore, et al., GCN Circ. 17743).\nThe BAT ground-calculated position is RA, Dec = 152.305, -26.646 deg\nwhich is\n   RA(J2000)  =  10h 09m 13.2s\n   Dec(J2000) = -26d 38' 45.7\"\nwith an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 69%.\n\nBAT light curve shows a bright multi-peaked episode starting\naround T-0.05 sec, and ending around T+0.5 sec. Very weak\nextended emission can be seen up to about T+100 sec as mentioned\nin Norris, et al., GCN Circ. 17759. T90 (15-350 keV) is\n91 +- 22 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-0.06 to T+106.32 sec is best fit by a\nsimple power-law model.  The power law index of the time-averaged\nspectrum is 1.23 +- 0.15.  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-0.06 sec in the 15-150 keV band is 12.0 +- 0.4 ph/cm2/sec.\nAll the quoted errors are at the 90% confidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/638946/BA/",
  "circularId": 17761,
  "createdOn": 1429976783000,
  "email": "tilan.ukwatta@gmail.com",
  "subject": "GRB 150424A: Swift-BAT refined analysis",
  "submitter": "Tilan Ukwatta at LANL  <tilan.ukwatta@gmail.com>",
  "eventId": "GRB 150424A"
}