{
  "bibcode": "2001GCN..1007....1G",
  "body": "GeV/TeV Observations of GRB 010222\n\nN. Goetting (1) and D. Horns (2) on behalf of the HEGRA Collaboration report:\n  (1) University of Hamburg (Germany)\n  (2) Max-Planck-Institut f. Kernphysik, Heidelberg (Germany)\n\nOn February 23rd beginning at UT 02:37 the BeppoSAX position of GRB 010222\n(GCN 960) was observed by the stereoscopic HEGRA Cherenkov telescope system\non La Palma (approx. 19 hours after the outburst). The object was observed\nfor 4 hours at altitudes > 45 degrees under good weather conditions.\n\nThe source was not detected above a threshold photon energy of 760 GeV.  \nA preliminary data analysis gives an upper limit on the photon flux at \nthe 90% confidence level:\n\n   J(E > 760 GeV) < 9.4 * 10^(-12) erg cm^(-2) s^(-1)\n\nContemporaneous observations of the Crab nebula were used to derive\nthis upper limit.",
  "circularId": 1007,
  "createdOn": 984142767000,
  "email": "grb@pe1rq.hegra.iac.es",
  "subject": "GRB 010222 - HEGRA GeV/TeV Observations",
  "submitter": "Spanish HEGRA group at XXXX  <grb@pe1rq.hegra.iac.es>",
  "eventId": "GRB 010222"
}