{
  "bibcode": "2012GCN.13762....1H",
  "body": "E. A. Helder (PSU), S. D. Barthelmy (GSFC),\nW. H. Baumgartner (GSFC/UMBC), N. Gehrels (NASA/GSFC),\nC. Gronwall (PSU), D. Grupe (PSU), J. A. Kennea (PSU),\nH. A. Krimm (CRESST/GSFC/USRA), C. B. Markwardt (NASA/GSFC),\nD. M. Palmer (LANL), B. Sbarufatti (INAF-OAB/PSU) and\nB.-B. Zhang (PSU) report on behalf of the Swift Team:\n\nAt 20:18:21 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 120913A (trigger=533568).  Swift did not slew because\nof the Sun observing constraint. \nThe BAT on-board calculated location is \nRA, Dec 146.437, +26.977 which is \n   RA(J2000)  =  09h 45m 45s\n   Dec(J2000) = +26d 58' 36\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty).  The BAT light curve shows several peaks\nwith a total duration of at least 40 sec.  (At T+30s, Swift\nexecuted a pre-planned slew that moved the GRB outside of the BAT FOV)\nThe peak count rate was ~2600 counts/sec (15-350 keV), at ~23 sec \nafter the trigger. \n\nDue to a Sun observing constraint, Swift cannot slew to the BAT\nposition until 22:34 UT on 2012 September 27. There will thus be no XRT\nor UVOT data for this trigger before this time. \n\nBurst Advocate for this burst is E. A. Helder (helder AT psu.edu). \nPlease contact the BA by email if you require additional information\nregarding Swift followup of this burst. In extremely urgent cases, after\ntrying the Burst Advocate, you can contact the Swift PI by phone (see\nSwift TOO web site for information: http://www.swift.psu.edu/too.html.)",
  "circularId": 13762,
  "createdOn": 1347568043000,
  "email": "scott@milkyway.gsfc.nasa.gov",
  "subject": "GRB 120913A: Swift detection of a burst",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@milkyway.gsfc.nasa.gov>",
  "eventId": "GRB 120913A"
}