{
  "bibcode": "2005GCN..3024....1B",
  "body": "S. Barthelmy, L. Barbier, J. Cummings (GSFC), E. Fenimore (LANL),\nN. Gehrels (GSFC), J. Greiner (MPE), D. Hinshaw (GSFC-SPSYS),\nD. Hullinger (GSFC/UMD), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD),\nT. Mitani (ISAS), K. Nakazawa (ISAS), J. Norris (GSFC), D. Palmer (LANL),\nA. Parsons, T. Sakamoto (GSFC) G. Sato (ISAS), M. Suzuki (Saitama),\nJ. Tueller (GSFC),  on behalf of the Swift-BAT team:\n\nThe BAT instrument on Swift triggered at 02:15:28 and at 02:33:12 UT 15 Feb 05,\ntriggers 106106 and 106107, respectively.  We have done preliminary analysis\non the ground using the TDRSS messages and the initial portions of the data\nfrom a telemetry downlink.\n\nFor GRB050215a (Trigger 106106) the position is RA,Dec=348.382,+49.322 (J2000)\nwith a position uncertainty of 4 arcmin (statistical plus systematic,\n90% containment radius).  The lightcurve is a single peak with a duration\nof ~6 seconds.  Nearly all of the emission is in the 15-25 keV band.  The Swift\nspacecraft automatically slewed to this burst and began follow-up observations,\nbut that follow-up sequence was interrupted by the second burst (18 min later).\n\nFor GRB050215b (Trigger 106107) the position is RA,Dec=174.450,+40.805 (J2000)\nwith a position uncertainty of 4 arcmin (statistical plus systematic,\n90% containment radius).  The lightcurve is a single peak with a duration\nof ~10 seconds.  The emission extends from 15 to ~100 keV.  The Swift spacecraft\nalso automatically slewed to this burst location and is currently doing\nan extended follow-up observation on this burst.  We note that this burst\nis well suited for ground-based optical follow-up observations in the Northern\nhemisphere.\n\nWe note that these bursts are clearly distinct and separate from each other.\nIt is merely coincidental that these two bursts happened within a few hours\nafter the enabling of the automatic real-time distribution of the Notices.",
  "circularId": 3024,
  "createdOn": 1108442733000,
  "email": "Scott@lheamail.gsfc.nasa.gov",
  "subject": "Swift-BAT detects two bursts: GRB050215a and GRB050215b",
  "submitter": "Scott Barthelmy at NASA/GSFC  <Scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 050215A"
}