{
  "bibcode": "2018GCN.22720....1C",
  "body": "J. R. Cummings (CPI), S. D. Barthelmy (GSFC),\nA. Deich (PSU), H. A. Krimm (NSF/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-239 to T+963 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 180512A (trigger #832119)\n(Deich et al., GCN Circ. 22710).  The BAT ground-calculated position is\nRA, Dec = 201.940, 21.404 deg which is\n  RA(J2000)  =  13h 27m 45.5s\n  Dec(J2000) = +21d 24' 15.7\"\nwith an uncertainty of 1.9 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 67%.\n\nThe mask-weighted light curve shows a weak pulse that starts at ~T+30 s,\npeaks at ~T+40 s, and ends at ~T+55 s. The short spike at T+54.4 s is due\nto detector noise. T90 (15-350 keV) is 24.0 +- 7.1 sec (estimated error including systematics).\nNote that the burst went out of the BAT FOV at T+469 s. The large pulse\nseen in the BAT raw light curve from ~T+400 s to ~T+550 s was from a bright\nbackground source that came in and out of the BAT FOV during this time interval.\n\nThe time-averaged spectrum from T+29.00 to T+55.00 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n2.10 +- 0.27.  The fluence in the 15-150 keV band is 4.2 +- 0.7 x 10^-7 erg/cm2.\nThe 1-sec peak photon flux measured from T+39.00 sec in the 15-150 keV band\nis 0.6 +- 0.2 ph/cm2/sec.  All the quoted errors are at the 90% confidence\nlevel.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/832119/BA/",
  "circularId": 22720,
  "createdOn": 1526230578000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 180512A: Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 180512A"
}