{
  "bibcode": "2010GCN.10412....1V",
  "body": "L. Vetere (PSU), S. D. Barthelmy (GSFC),\nW. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU),\nJ. M. Gelbord (PSU), D. Grupe (PSU), S. T. Holland (CRESST/USRA/GSFC),\nE. A. Hoversten (PSU), J. A. Kennea (PSU),\nH. A. Krimm (CRESST/GSFC/USRA), C. B. Markwardt (CRESST/GSFC/UMD),\nF. E. Marshall (NASA/GSFC), C. Pagani (PSU), D. M. Palmer (LANL),\nT. Sakamoto (NASA/UMBC), M. H. Siegel (PSU), M. C. Stroh (PSU) and\nT. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:\n\nAt 22:58:34 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 100213B (trigger=412220).  Swift slewed immediately to the burst. \nThe BAT on-board calculated location is \nRA, Dec 124.338, +43.455 which is \n   RA(J2000)  =  08h 17m 21s\n   Dec(J2000) = +43d 27' 19\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty).  The BAT light curve shows a FRED-like pulse\nstructure with a duration of about 30 sec.  The peak count rate\nwas ~1000 counts/sec (15-350 keV), at ~2 sec after the trigger. \n\nThe XRT began observing the field at 23:01:03.7 UT, 149.5 seconds after\nthe BAT trigger. XRT found a bright, uncatalogued X-ray source located\nat RA, Dec 124.2858, +43.4473 which is equivalent to:\n   RA(J2000)  = 08h 17m 08.59s\n   Dec(J2000) = +43d 26' 50.2\"\nwith an uncertainty of 5.2 arcseconds (radius, 90% containment). No\nevent data are yet available to determine the column density using\nX-ray spectroscopy. \n\nThe initial flux in the 2.5 s image was 1.75e-09 erg cm^-2 s^-1 (0.2-10\nkeV). \n\nUVOT took a finding chart exposure of  77 seconds with the White filter\nstarting 157 seconds after the BAT trigger. No credible afterglow candidate has\nbeen found in the initial data products. The 2.7'x2.7' sub-image covers 100% of\nthe XRT error circle. The  3-sigma upper limit is about 20.5 mag. \nThe 8'x8' region for the list of sources generated on-board covers 100% of the\nXRT error circle. The list of sources is typically complete to about 18 mag. No\ncorrection has been made for the expected extinction corresponding to E(B-V) of\n0.08. \n\nBurst Advocate for this burst is L. Vetere (vetere AT astro.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": 10412,
  "createdOn": 1266102735000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 100213B: Swift detection of a burst",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 100213B"
}