{
  "bibcode": "2008GCN..8312....1K",
  "body": "H. A. Krimm (CRESST/GSFC/USRA), A. P. Beardmore (U Leicester),\nN. Gehrels (NASA/GSFC), K. L. Page (U Leicester),\nD. M. Palmer (LANL), R. L. C. Starling (U Leicester) and\nT. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:\n\nAt 11:16:13 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated a short soft burst (trigger=330367).   The BAT on-board \ncalculated location is RA, Dec 237.704, -54.308 which is \n   RA(J2000) = 15h 50m 49s\n   Dec(J2000) = -54d 18' 29\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty).  This is consistent with the location\nof the trigger 330353, 108 minutes earlier.  The BAT light curve \nshowed a single-peaked structure with a duration of about 0.750 sec, \nmostly below 100 keV.  The peak count rate was ~20000 counts/sec \n(15-350 keV), at ~0 sec after the trigger. \n\nSwift was already observing this source when BAT triggered. Hence, no XRT or UVOT\ndata will be downlinked via TDRSS, but will be available after the next Malindi pass. \n\nThe earlier BAT trigger 330353 (Krimm et al. GCN 8311) showed\nadditional bursts at T+110s and T+520s, giving a total of\nfour known bursts from this source in under two hours.  Therefore\nwe believe that this is a new Soft Gamma Repeater, \nwhich we name SGR 1550-5418.  It is possible that this SGR\nis the same source as the Anomalous X-ray Pulsar 1E1547.0-5408\n(Gelfand & Gaensler 2007; Camilo et al. 2008; Halpern et al. 2008). \nThis possible identification will be confirmed or refuted\nwhen the XRT position data becomes available. \n\nBurst Advocate for this burst is H. A. Krimm (krimm AT milkyway.gsfc.nasa.gov). \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": 8312,
  "createdOn": 1223034361000,
  "email": "palmer@lanl.gov",
  "subject": "Swift discovery of a new Soft Gamma Repeater SGR 1550-5418",
  "submitter": "David Palmer at LANL  <palmer@lanl.gov>"
}