Gamma ray observations of polars

Details Gamma ray observations of polars Gamma ray observations of polars

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990basi...18..215b&link_type=abstract

Astronomical Society of India, Bulletin (ISSN 0304-9523), vol. 18, Sept.-Dec. 1990, p. 215-227.

Astronomy and Astrophysics

Astronomy

3

Cataclysmic Variables, Gamma Ray Astronomy, Cerenkov Radiation, Circular Polarization, Light Curve, Neutron Stars, Polarized Light, Stellar Magnetic Fields, White Dwarf Stars

Scientific paper

Experimental evidence is reported for the discovery of an entirely new class of gamma-ray binary objects involving a magnetic white dwarf rather than a neutron star degenerate primary. These sources may have photon energies extending into the PeV range. The gamma-ray light curves exhibit a striking morphological similarity with corresponding phase dependence of the circularly polarized light from the sources. If confirmed, these results will have important consequences for the physics underlying acceleration of high-energy particle beams in binary systems as well as for the contribution of unresolved point sources in the Galactic gamma-ray background.

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