Statistics – Computation
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.204..141w&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 204, no. 1, p. 141-153.
Statistics
Computation
4
Accretion Disks, Binary Stars, Gamma Ray Spectra, X Ray Sources, Compton Effect, Computational Astrophysics, Pair Production, Stellar Coronas, X Ray Spectra
Scientific paper
The modification effect of a hot X-ray photon field on a gamma-ray spectrum by the photon-photon pair production and inverse Compton scattering processes is examined via simulation calculations. The Cyg X-3 system was used as a paradigm. It is shown that a gamma-ray spectrum can change significantly when passing through the ambient keV X-ray photon field of an accretion binary source. For Cyg X-3, a significant amount of gamma rays originating near the central source in the range of 100-10,000 MeV could be absorbed by the extended X-ray photons from accretion disk corona in a high X-ray luminosity state and, on the other hand, the inverse Compton effect of secondary electrons could cause a considerable increase in intensity of gamma rays between about 10 and 50 MeV. The relevance of the absorption effect for observations is discussed.
Li Ti Pei
Wu Mei
Zhang Chun-Sheng
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