Local gamma ray events as tests of the antimatter theory of gamma ray bursts

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Annihilation Reactions, Antimatter, Gamma Rays, Plasma-Particle Interactions, Solar Wind, Astronomical Models, Energy Spectra, Meteoroids

Scientific paper

Nearby examples of the antimatter 'chunks' postulated by Sofia and Van Horn (1974) to explain cosmic gamma-ray bursts may produce detectable gamma-ray events when struck by solar-system meteoroids. These events would have a much shorter time scale and higher energy spectrum than the bursts already observed. In order to have a reasonably high event rate, the local meteoroid population must extend to a heliocentric distance of the order of 0.1 pc, but the required distance could become much lower if the instrument threshold is improved. The expected gamma-ray flux for interaction of the antimatter bodies with the solar wind is also examined and found to be far below present instrument capabilities.

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