Search for high energy gamma-ray bursts

Details Search for high energy gamma-ray bursts Search for high energy gamma-ray bursts

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..312..122p&link_type=abstract

Third Rome Workshop on Gamma-Ray Bursts in the Afterglow Era ASP Conference Series, Volume 312, Proceedings of the conference he

Astronomy and Astrophysics

Astronomy

Scientific paper

The search for high energy gamma-ray bursts and high energy radiation (Eγ ≥ 10 GeV) in correlation with the gamma-ray bursts registered at low energies (BATSE Eγ = 30 - 500 keV) has been carried out at the "Andyrchy" array of the Baksan Neutrino Observatory, INR RAS. Using "Andyrchy" data collected during 1996 - 2001 years we have obtained a limit on the rate of gamma bursts with Δ t = (1 - 50) second duration and corresponding energy fluences W(Δ t) ≥ 5.6 × 10-3 × √{Δ t} erg/cm2 in the declination band 10° ≤ δ ≤ 70°: Ωlim = 2.0 × 10-8 sec-1 at 90% c.l. 147 events have come into the field of view of the "Andyrchy" array during the period of 1996 - 2000 years (θ ≤ 50°). Range of limits on the energy fluence carried away by high energy gammas in the bursts is Wmax = 6.5× 10-4 - 0.15 erg/cm2.

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