{
  "bibcode": "2001GCN..1169....1R",
  "body": "GRB011130 (=XRF011130): Revised Localization of an X-ray Flash/X-ray Rich GRB\n\nG. Ricker, D. Lamb, and S. Woosley on behalf of the HETE Science Team;\n\nN. Butler, G. Crew, J. Doty, G. Monnelly, G. Prigozhin, R. \nVanderspek, J. Villasenor, T. Cline, J.G. Jernigan, A. Levine, F. \nMartel, E. Morgan, J. Braga, R. Manchanda, and G. Pizzichini, on \nbehalf of the HETE Operations and HETE Optical-SXC Teams;\n\nC. Graziani, N. Kawai, M. Matsuoka, Y. Shirasaki, T. Tamagawa, K. \nTorii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi, T. Tavenner, \nand T. Donaghy, on behalf of the HETE WXM Team;\n\nJ-L Atteia, M. Boer, J-F Olive, J-P Dezalay, and K. Hurley on behalf \nof the HETE FREGATE Team;\n\nwrite:\n\nThe localization of H1764, an X-ray flash (XRF) reported as GRB011130 \nin GCN Circular 1165, has been greatly improved. The burst occurred \nat 22775.66 SOD (6:19:35 UT) on 30 November.\n\nSelection by hand of optimal background and foreground time \nintervals, and the optimal energy interval has resulted in a 19.6 \nsigma detection of GRB011130 in the WXM 2-10 keV energy band.  The \nimproved statistical error radius in the WXM localization is 7.2 \narcmin (90% confidence). The spacecraft aspect has been improved to \nlie within a circle of 3.6 arcmin radius. The revised localization of \nH1864 is centered at:\n\nR.A. = 03h05m36s.45, Dec. = 3o48'37\"\n\nA circle centered on this location having a radius 10 arcmin contains \nthe burst location with > 90% confidence.\n\nThe revised location differs significantly (~4 degrees) from the \noriginally reported one; the contributing factors to the large \ndifference are explained in detail in the \"Special Note on Burst \n1864\" posted at:\n\nhttp://space.mit.edu/HETE/Bursts/\n\nA careful re-analysis of the full WXM data set indicates that the \nburst is considerably longer, and of higher fluence, than reported in \nGCN1135. In the 2-10 keV band, the duration is ~30 s, with ~3100 \ncounts contained in the burst.\n\nFurther refinement of the spacecraft aspect, and thus the burst \nlocalization, continues.\n\nThis message is quotable.",
  "circularId": 1169,
  "createdOn": 1007168715000,
  "email": "grr@space.mit.edu",
  "subject": "GRB011130 (=XRF011130): Revised Localization of an X-ray",
  "submitter": "George Ricker at MIT  <grr@space.mit.edu>",
  "eventId": "GRB 011130"
}