TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1724 SUBJECT: GRB 021104, GRB 021112 and GRB 021113 - Milagro GeV/TeV Observations DATE: 02/12/06 18:41:04 GMT FROM: Julie McEnery at UMBC/GSFC Julie McEnery on behalf of the Milagro collaboration reports: Milagro searched for GeV/TeV gamma-ray emission from GRB 021104 (GCN 1675), GRB 021112 (GCN 1682) and GRB 021113 (GCN 1686) during the burst durations reported by the HETE WXM (26, 5 and 20 seconds respectively). No evidence for prompt GeV/TeV emission was found from any of these bursts. A preliminary analysis (assuming a differential photon spectral index of -2.4) gives an upper limit on the fluence at the 99.9% confidence level of: J(E 0.2-20 TeV) < 3.4 * 10^(-6) erg cm^(-2) for GRB 021104 and, J(E 0.2-20 TeV) < 2.6 * 10^(-6) erg cm^(-2) for GRB 021112 and, J(E 0.2-20 TeV) < 2.8 * 10^(-6) erg cm^(-2) for GRB 021113