{
  "bibcode": "2013GCN.14899....1B",
  "body": "S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC),\nE. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA),\nA. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC), D. M. Palmer (LANL),\nT. Sakamoto (AGU), E. Sonbas (NASA/GSFC/Adiyaman Univ.), M. Stamatikos (OSU),\nJ. Tueller (GSFC), T. N. Ukwatta (MSU)\n(i.e. the Swift-BAT team):\n \nUsing the data set from T-239 to T+963 sec from recent telemetry downlinks,\nwe report further analysis of BAT GRB 130615A (trigger #558271)\n(Sonbas, et al., GCN Circ. 14897).  The BAT ground-calculated position is\nRA, Dec = 274.963, -68.161 deg, which is \n   RA(J2000)  =  18h 19m 51.2s \n   Dec(J2000) = -68d 09' 39.7\" \nwith an uncertainty of 2.9 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 60%.\n \nThe mask-weighted light curve shows two peaks both of which are nearly smooth.\nThe first starts at ~T+10 sec and ends at ~T+150 se.  The second peak\ngoes from ~T+270 to T+450 sec.  T90 (15-350 keV) is 304 +- 30 sec\n(estimated error including systematics).\n \nThe time-averaged spectrum from T+25.57 to T+386.86 sec is best fit by a power law\nwith an exponential cutoff.  This fit gives a photon index 0.87 +- 0.92, \nand Epeak of 33.2 +- 8.6 keV (chi squared 61.91 for 56 d.o.f.).  For this\nmodel the total fluence in the 15-150 keV band is 2.1 +- 0.3 x 10^-6 erg/cm2\nand the 1-sec peak flux measured from T+31.84 sec in the 15-150 keV band is\n0.7 +- 0.2 ph/cm2/sec.  A fit to a simple power law gives a photon index\nof 2.18 +- 0.16 (chi squared 70.23 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/558271/BA/",
  "circularId": 14899,
  "createdOn": 1371311773000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 130615A: Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 130615A"
}