{
  "bibcode": "2015GCN.17509....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 (GSFC/UMBC), C. B. Markwardt (GSFC), T. Sakamoto (AGU),\nM. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (LANL)\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 trigger #632888 on 4U 0142+61\n(Barthelmy, et al., GCN Circ. 17507).  The BAT ground-calculated position is\nRA, Dec = 26.603, 61.746 deg, which is \n   RA(J2000)  =  01h 46m 24.8s \n   Dec(J2000) = +61d 44' 47.4\" \nwith an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 39%.\n \nThe mask-weighted light curve shows multiple spikes from the source.\nThe event-by-event data starts at T-240 sec. The first emission is at ~T-9 sec \nand may be several unresolved spikes or a single outburst with a duration of ~1 sec.\nThen come 4 splikes (durations less than ~50 msec), then a bright spike at ~T+0 sec,\nthen spikes at T+{10, 15, 65, 72, and 247} sec, all with durations < 75 msec.\nThen the source goes out of the BAT FOV at ~T+430 sec.\nT90 (15-350 keV) is 187 +- 114 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T-9.08 to T+273.78 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n2.01 +- 0.29.  The fluence in the 15-150 keV band is 1.1 +- 0.2 x 10^-6 erg/cm2.\nThe 1-sec peak photon flux measured from T+9.24 sec in the 15-150 keV band\nis 2.1 +- 0.3 ph/cm2/sec.  All 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/632888/BA/",
  "circularId": 17509,
  "createdOn": 1425146456000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "Swift-BAT refined analysis of magnetar 4U 0142+61 (Trigger 632888)",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>"
}