{
  "bibcode": "2014GCN.16423....1P",
  "body": "D. M. Palmer (LANL), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),\nJ. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA),\nA. Y. Lien (NASA/UMBC), C. B. Markwardt (GSFC), M. De Pasquale (INAF-IASFPA)\nT. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU)\n(i.e. the Swift-BAT team):\n\nUsing the data set from T-239 to T+421 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 140619A (trigger #602080)\n(De Pasquale, et al., GCN Circ. 16415).  The BAT ground-calculated position is\nRA, Dec = 27.096, -39.249 deg which is\n   RA(J2000)  =  01h 48m 23.2s\n   Dec(J2000) = -39d 14' 57.1\"\nwith an uncertainty of 1.8 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 41%.\n\nThe mask-weighted light curve shows a complex structure with multiple peaks.\nThe main visible structure starts with roughly two long weaker pulses from\n~T+20 s to T+150 s. The two weak pulses were followed by the major bright\nstructure lasting until ~T+260 s, and it consists of many sub-pulses. Afterward\nthere is another weaker long pulse lasting until ~T+350 s. T90 (15-350 keV) is\n233.9 +- 13.4 sec (estimated error including systematics).\n\nNote that the main structure of the burst happened at ~150 s after the original image trigger,\nand was not described in the first circular (De Pasquale, et al., GCN Circ. 16415).\n\nThe time-averaged spectrum from T+32.3 to T+340.4 sec is best fit by a power law\nwith an exponential cutoff.  This fit gives a photon index 1.45 +- 0.14,\nand Epeak of 117.8 +- 46.2 keV (chi squared 54.23 for 56 d.o.f.).  For this\nmodel the total fluence in the 15-150 keV band is 2.1 +- 0.04 x 10^-5 erg/cm2\nand the 1-sec peak flux measured from T+219.52 sec in the 15-150 keV band is\n4.6 +- 0.2 ph/cm2/sec.  A fit to a simple power law gives a photon index\nof 1.71 +- 0.03 (chi squared 64.34 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/602080/BA/",
  "circularId": 16423,
  "createdOn": 1403267075000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 140619A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 140619A"
}