Mathematics – Probability
Scientific paper
Dec 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.211..559f&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 211, Dec. 1, 1984, p. 559-561.
Mathematics
Probability
8
Elementary Particle Interactions, Gamma Ray Absorption, Pair Production, Photons, Stellar Atmospheres, Binary Stars, Optical Thickness, Radiation Sources, Radii, Stellar Temperature
Scientific paper
The absorption of high-energy γ rays in the 1012eV energy range due to photon-photon interactions (γγ→e+e-) near a star is discussed. It is found that such γ rays passing near the Sun will have an absorption probability of a few per cent. In the case of hotter stars, there will be a region around the star up to 102 stellar radii across which is optically thick to the passage of high-energy gamma rays. The possible application of these results to high-energy gamma-ray sources in binary systems, such as Cygnus X-3, is discussed.
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