{
  "bibcode": "2014GCN.16553....1M",
  "body": "C. B. Markwardt (GSFC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),\nJ. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), L. M. Z. Hagen (PSU),\nH. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/UMBC), D. M. Palmer (LANL),\nT. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC),\nT. N. Ukwatta (MSU) (i.e. the Swift-BAT team):\n\nUsing the data set from T-239 to T+626 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 140709A (trigger #603810)\n(Hagen, et al., GCN Circ. 16546).  The BAT ground-calculated position is\nRA, Dec = 304.666, 51.222 deg which is\n    RA(J2000)  =  20h 18m 39.9s\n    Dec(J2000) = +51d 13' 17.8\"\nwith an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 61%.\n\nThe mask-weighted light curve shows a complex structure.  Burst activity begins\nat T-50 sec, with a gradual rise to a peak at T+0 sec, punctuated by several\nsubsidiary peaks.  Then there is a return to near background by T+8 sec,\nfollowed by a second main peak at T+15 sec.  There are additional smaller and\nsofter peaks centered at T+55 and T+75 sec. T90 (15-350 keV) is 98.6 +- 7.7 sec\n(estimated error including systematics).\n\nThe time-averaged spectrum from T-46.1 to T+93.4 sec is best fit by a power law\nwith an exponential cutoff.  This fit gives a photon index 1.23 +- 0.27,\nand Epeak of 78.0 +- 20.4 keV (chi squared 57.80 for 56 d.o.f.).  For this\nmodel the total fluence in the 15-150 keV band is 5.2 +- 0.2 x 10^-6 erg/cm2\nand the 1-sec peak flux measured from T+15.48 sec in the 15-150 keV band is\n3.1 +- 0.3 ph/cm2/sec.  A fit to a simple power law gives a photon index\nof 1.74 +- 0.06 (chi squared 69.09 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/603810/BA/",
  "circularId": 16553,
  "createdOn": 1404923371000,
  "email": "hans.krimm@nasa.gov",
  "subject": "GRB 140709A, Swift-BAT refined analysis",
  "submitter": "Hans Krimm at NASA-GSFC  <hans.krimm@nasa.gov>",
  "eventId": "GRB 140709A"
}