{
  "bibcode": "2002GCN..1253....1H",
  "body": "K. Hurley, on behalf of the Ulysses GRB team;\n\nG. Ricker, D. Lamb, S. Woosley, G. Crew, J. Doty, G.  Monnelly, J.\nVillasenor, R. Vanderspek, N.  Butler, J.G. Jernigan, A. Levine, F.\nMartel, E. Morgan, G.  Prigozhin, J. Braga, R. Manchanda, G.\nPizzichini, N. Kawai, M. Matsuoka, Y. Shirasaki, T. Tamagawa, K. Torii,\nT.  Sakamoto, A. Yoshida, E. Fenimore, M. Galassi, T. Donaghy, C.\nGraziani, T. Tavenner, J-L Atteia, M. Boer, J-F Olive, and J-P Dezalay,\non behalf of the HETE Team; \n\nM. Feroci, F. Frontera, C. Guidorzi, and E. Montanari, on behalf of the\nBeppoSAX GRBM team; and\n\nT. Cline, on behalf of the Ulysses and HETE GRB teams, report:\n\nA resurgence of activity from the soft gamma repeater SGR1900+14\nhas been detected by Ulysses and HETE-FREGATE, as evidenced\nby the detection of the following short bursts:\n\n\nDate\t\tTime at\t   Time at \tDuration,\tFluence,\n\t\tUlysses    HETE            s.           erg/cm^2\n\t\t\t\t\t\t\t25-100 keV\n__________________________________________________________________\n\nFebruary 17\t74060 s\t   Not observed   .032\t\t10^-7\nFebruary 18\t03916 s\t   Not observed   .032\t\t4x10^-7\nFebruary 18\t10143 s\t   Not observed   .12\t\t2x10^-6\nFebruary 18\t16661 s\t   Not observed\t  .25           10^-6\t\t\nFebruary 18\t21936 s\t   Not observed   .22\t\t1.4x10^-6\nFebruary 18\t22632 s\t   23134 s\t  .15\t\t1.2x10^-4\n\nTriangulation of the last event on February 18 gives an annulus\nconsistent with the position of SGR1900+14.  This SGR is presently ~130\ndegrees off-axis for FREGATE and the other HETE instruments.  However,\nthe last burst was ~100 times more intense than the preceding ones,\nwhich explains why it alone could have been detected through the\ncollimator.  Assuming that the other events were indeed from SGR1900\n(because of their properties and proximity in time, any other origin is\nextremely unlikely), their Earth-crossing times would have been ~502 s\nlater than the Ulysses times given above.  Confirmation of the first\nfive events is being searched for in the data of other spacecraft.\n(However, the BeppoSAX GRBM was not returning data for this period).",
  "circularId": 1253,
  "createdOn": 1014155304000,
  "email": "khurley@sunspot.ssl.berkeley.edu",
  "subject": "IPN/HETE Detection of Bursts from SGR1900+14",
  "submitter": "Kevin Hurley at UCBerkeley/SSL  <khurley@sunspot.ssl.berkeley.edu>"
}