Inverse Compton gamma rays from CYG X-3

Details Inverse Compton gamma rays from CYG X-3 Inverse Compton gamma rays from CYG X-3

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.266..512f&link_type=abstract

Nature, vol. 266, Apr. 7, 1977, p. 512, 513. NSF-supported research.

Computer Science

15

Binary Stars, Compton Effect, Gamma Rays, X Ray Stars, Electron Scattering, Neutron Stars, Relativistic Particles, Stellar Models

Scientific paper

Gamma rays with energies of the order of 100 MeV from Cyg X-3 have recently been detected and found to display a 4.8-hr modulation in phase with the IR and X-ray fluxes. It is argued that inverse Compton scattering of relativistic electrons with energies of the order of 100 MeV by X-rays in the region between the X-ray source and its companion provides a mechanism for the gamma-ray emission and its modulation. A model is considered which involves a close binary system with a cloud of relativistic electrons close to and on the X-ray-source side of the primary. The spin of a neutron star is presumed to be the energy source for the electrons, and it is predicted that (nonbinary) gamma-ray and IR emission variability should be correlated if the proposed emission source is correct. It is noted that inverse Compton scattering by stellar and IR photons in this model could account for the observed hard-X-ray tail.

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