Astron. Astrophys. 324, 573-577 (1997)

Gamma ray burst source statistics in the presence of stochastic errors

G.S. Bisnovatyi-Kogan ^*

Space Research Institute, Profsoyuznaya 84/32, Moscow 117810, Russia

Received 29 March 1996 / Accepted 13 January 1997

Abstract

Selection effects, connected with stochastic errors in source flux and threshold value determination are analyzed. Normal and normal logarithmic distributions of stochastic deviations are considered. These two kind of distributions produce different effects on the source statistics. Applications to Gamma Ray Burst statistics are discussed. A physical test for checking a close neutron star model of GRBs is suggested.

Key words: methods: statistical gamma-rays: bursts stars: neutron

* This work was supported in part by RFFI grant 93-02-17106, Astronomy Program of RMSTP topic 3-169, NSF grant AST 93-20068 and by COSMION

Contents

• 1. Introduction
• 2. Source statistics in presence of stochastic errors
• 3. Discussion
• 4. Testing the physical origin of GRBs
• Acknowledgements
• References

© European Southern Observatory (ESO) 1997

Online publication: May 26, 1998

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