{
  "bibcode": "2003GCN..1978....1V",
  "body": "J. Villasenor, G. Crew, R. Vanderspek, J. Doty, G. Monnelly, N. Butler,\nT. Cline, J.G. Jernigan, A. Levine, F. Martel, E. Morgan, G. Prigozhin,\nG. Azzibrouck, J. Braga, R. Manchanda, and G. Pizzichini, on behalf of\nthe HETE Operations and HETE Optical-SXC Teams;\n\nG. Ricker, J-L Atteia, N. Kawai, D. Lamb, and S. Woosley on behalf of\nthe HETE Science Team;\n\nT. Donaghy, M. Suzuki, Y. Shirasaki, C. Graziani, M. Matsuoka, T.\nTamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi,\nT. Tavenner, Y. Nakagawa, D. Takahashi, R. Satoh, and Y. Urata, on\nbehalf of the HETE WXM Team;\n\nM. Boer, J-F Olive, J-P Dezalay, C.  Barraud and K. Hurley on behalf\nof the HETE FREGATE Team;\n\nwrite:\n\nAt 11:20:58.34 UTC (40858.34 s UT) on 28 Mar 2003, the HETE FREGATE,\nWXM, and SXC instruments detected event H2650, a long, bright GRB.\n\nThe burst triggered FREGATE in the 8-80 keV energy band; the flight\nsoftware incorrectly attributed the burst to particles, and therefore\nthe WXM and SXC flight localizations were not sent out.  The operations\nteam quickly validated the SXC flight localization and disseminated it\nin a GCN Notice at 12:14:13 UT, 53 minutes after the burst.  The SXC\nflight localization SNR was 6.  The SXC flight localization can be\nexpressed as a 90% confidence circle that is 2 arcminutes in radius and\nis centered at\n\nSXC-Flight:   RA = +12h 10m 46s, Dec = -09d 22' 29\" (J2000).\n\nGround analysis of the WXM data and the SXC data for the burst produced\nrefined WXM and SXC localizations, which were reported in a GCN Notice\nat 13:21:46 UT, 121 minutes after the burst.  The WXM ground\nlocalization SNR was 25.  The WXM location can be expressed as a 90%\nconfidence circle that is 4.6 arcminutes in radius and is centered at\n\nWXM-Ground:   RA = +12h 10m 53s, Dec = -09d 23' 30\" (J2000).\n\nThe SXC ground localization SNR was 10.  The SXC ground localization\ncan be expressed as a 90% confidence circle that is 52 arcseconds in\nradius and is centered at\n\nSXC-Ground:   RA = +12h 10m 51s, Dec = -09d 21' 05\" (J2000).\n\nThe burst duration t_90 in the 30-400 keV band was ~ 100 s.  The fluence\nof the burst was 3.0 x 10-5 ergs cm-2 and the peak flux over 5.2 s was\n7.3 x 10-7 ergs cm-2 s-1 in the same energy band.\n\nA light curve and skymap for GRB030328 is provided at the following URL:\n\nhttp://space.mit.edu/HETE/Bursts/GRB030328",
  "circularId": 1978,
  "createdOn": 1048883467000,
  "email": "lamb@oddjob.uchicago.edu",
  "subject": "GRB030328 (=H2650): A Long, Bright GRB Localized by the HETE WXM and SXC",
  "submitter": "Don Lamb at U.Chicago  <lamb@oddjob.uchicago.edu>",
  "eventId": "GRB 030328"
}