{
  "eventId": "XRF 030416",
  "email": "lamb@oddjob.uchicago.edu",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
  "bibcode": "2003GCN..2209....1J",
  "body": "J.G. Jernigan, N. Butler, R. Vanderspek, G. Crew, J. Doty, J.\nVillasenor, G. Monnelly, T. Cline, A. Levine, F. Martel, E. Morgan, G.\nPrigozhin, G. Azzibrouck, J. Braga, R. Manchanda, and G. Pizzichini, on\nbehalf of the 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\nY. Shirasaki, C. Graziani, T. Donaghy, M. Matsuoka, M. Suzuki, 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 of\nthe HETE FREGATE Team;\n\nwrite:\n\nAt 11:03:59.00 UTC (39839.00 s UT) on 16 Apr 2003, the HETE FREGATE and\nWXM instruments detected event U10897, an X-ray flash.\n\nThe burst had essentially no flux in the FREGATE 30-400 keV trigger\nband.  The FREGATE 6-80 keV trigger and the WXM trigger were not active\nat the time, to avoid triggers due to flaring activity from Sco X-1.\nConsequently, the burst did not produce an on-board trigger.  The SXC\nwas off because of illumination by the full moon.\n\nThe event was noticed by operators on the ground.  Ground analysis of\nthe WXM data for the burst produced a location which was reported in a\nGCN Notice at 02:47:53 UTC on 17 April 2003, about 16 hours after the\nburst. The WXM ground localization SNR was 16.  The WXM localization\ncan be expressed as a 90% confidence circle that is 7 arcminutes in\nradius and is centered at:\n\nR.A. = 11h 06m 51s, Dec. = -02d 52' 58\" (J2000).\n\nThe T_90 duration of the burst in the 2-25 keV WXM energy band was\n~ 50 s.  The fluence of the burst was ~ 5 x 10^-7 erg cm^-2 in the\n2-25 keV energy band and ~ 1 x10^-7 erg cm^-2 in the 30-400 keV energy\nband; thus S(2-25)/S(30-400 keV) ~ 5.  Therefore this burst is an XRF.\n\nA light curve and skymap for GRB030416 is provided at the following URL:\n\nhttp://space.mit.edu/HETE/Bursts/GRB030416",
  "subject": "XRF030416 (=U10897): An X-Ray Flash Localized by the HETE WXM",
  "createdOn": 1052247148000,
  "circularId": 2209,
  "submitter": "Don Lamb at U.Chicago  <lamb@oddjob.uchicago.edu>",
  "editedOn": 1777052888976,
  "version": 2
}