Search for ultrahigh-energy cosmic gamma-ray bursts on the Baksan underground scintillation telescope

Details Search for ultrahigh-energy cosmic gamma-ray bursts on the Baksan underground scintillation telescope Search for ultrahigh-energy cosmic gamma-ray bursts on the Baksan underground scintillation telescope

Jan 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006astl...32....1s&link_type=abstract

Astronomy Letters, vol. 32, Issue 1, p.1-6

Astronomy and Astrophysics

Astronomy

1

Pacs Numbers 98.70.Rz

Scientific paper

Based on data from the Baksan underground scintillation telescope (BUST) for the period 2001 2004, we searched for cosmic gamma-ray bursts (GRBs) at primary photon energies of 0.5 TeV or higher. We obtained constraints on the rate of bursts with durations of 1 10 s for fluences within the range 4.6 × 10-3-1.8 × 10-2 erg cm-2 in the declination band 30° ≤ δ ≤ 80°. We searched for ultrahigh-energy gamma rays from GRBs detected on spacecraft during and within ±2 h of the burst. No statistically significant excesses above the background of random coincidences were found. The derived constraints on the ultrahigh-energy gamma-ray fluence during GRBs lie within the range 4.6 × 10-3-3.7 × 10-2 erg cm-2.

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