Galactic absorption of high-energy gamma-rays from Cygnus X-3

Details Galactic absorption of high-energy gamma-rays from Cygnus X-3 Galactic absorption of high-energy gamma-rays from Cygnus X-3

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...274l..23g&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 274, Nov. 1, 1983, p. L23-L25.

Astronomy and Astrophysics

Astrophysics

18

Background Radiation, Binary Stars, Gamma Ray Absorption, Relic Radiation, X Ray Sources, Black Body Radiation, Optical Thickness, Pair Production, Particle Collisions, Photon Density

Scientific paper

The importance of cosmic blackbody photons as an absorbing gas for the attenuation of high-energy photons via pair production in photon-photon collision is examined for the specific case of gamma rays from Cyg X-3. Recent observational results on this photon flux in the range from 2 x 10 to the 15th to 2 x 10 to the 16th eV are corrected for this attenuation. The absorption optical depth to the source is about unity, and the corrected flux is about a factor of three higher; as a result, it does not extrapolate from the data at lower energies (10 to the 12th eV).

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