A Search for Ultra-High Energy Counterparts to Gamma-Ray Bursts

Details A Search for Ultra-High Energy Counterparts to Gamma-Ray Bursts A Search for Ultra-High Energy Counterparts to Gamma-Ray Bursts

1995-08-18

arxiv.org/abs/astro-ph/9508083v2

Astrophys.Space Sci. 231 (1995) 271

Astronomy and Astrophysics

Astrophysics

4 pages LaTeX with one postscript figure. This version does not use kluwer.sty and will allow automatic postscript generation

Scientific paper

10.1007/BF00658630

A small air shower array operating over many years has been used to search for ultra-high energy (UHE) gamma radiation ($\geq 50$ TeV) associated with gamma-ray bursts (GRBs) detected by the BATSE instrument on the Compton Gamma-Ray Observatory (CGRO). Upper limits for a one minute interval after each burst are presented for seven GRBs located with zenith angles $\theta < 20^{\circ}$. A $4.3\sigma$ excess over background was observed between 10 and 20 minutes following the onset of a GRB on 11 May 1991. The confidence level that this is due to a real effect and not a background fluctuation is 99.8\%. If this effect is real then cosmological models are excluded for this burst because of absorption of UHE gamma rays by the intergalactic radiation fields.

Affiliated with

Also associated with

No associations

Rating

A Search for Ultra-High Energy Counterparts to Gamma-Ray Bursts does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Search for Ultra-High Energy Counterparts to Gamma-Ray Bursts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Search for Ultra-High Energy Counterparts to Gamma-Ray Bursts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-271465