Origin of PeV gamma rays from Cygnus X-3

Details Origin of PeV gamma rays from Cygnus X-3 Origin of PeV gamma rays from Cygnus X-3

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...261..565a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 261, no. 2, p. 565, 566.

Astronomy and Astrophysics

Astronomy

Binary Stars, Gamma Ray Astronomy, Neutron Stars, X Ray Sources, Compton Effect, Infrared Radiation, Photons, Relativistic Electron Beams

Scientific paper

It was suggested earlier by Schlickeiser (1989) that the observed PeV gamma rays from Cyg X-3 arise from Compton scattering of X-rays by high-energy electrons (gamma is approximately equal to 10 exp 10) provided by the central neutron star. It is shown here that the density of high-energy electrons required can be reduced by two orders of magnitude if optical photons are used instead of X-rays. However, the electrons may not attain the required energy, if the observed infrared photons arise from a cocoon around the neutron star, and one has to look for another process to account for the PeV gamma rays.

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