Polarized radiation from hot plasmas and applications to AM Herculis binaries. II - Effect of collisions and Thomson scattering

Details Polarized radiation from hot plasmas and applications to AM Herculis binaries. II - Effect of collisions and Thomson scattering Polarized radiation from hot plasmas and applications to AM Herculis binaries. II - Effect of collisions and Thomson scattering

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...278..298b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 278, March 1, 1984, p. 298-309.

Astronomy and Astrophysics

Astrophysics

55

Binary Stars, Cosmic Plasma, Coulomb Collisions, High Temperature Plasmas, Polarized Radiation, Thomson Scattering, Variable Stars, Absorptivity, Polarization Characteristics, Stellar Magnetic Fields, Stellar Mass Accretion

Scientific paper

The radiative transfer equations for a homogeneous plasma with large Faraday rotation are solved, and simple analytic expressions for the Stokes parameters Q and V are derived in terms of ordinary and extraordinary mode optical depths, for the radiation emitted by magnetoactive plasmas with temperatures in the 0.1-5 keV range. The results are applied to homogeneous plasma slabs representing a simple model for the accretion columns of the AM Herculis binaries. The inclusion of collision and Thomson scattering effects reduces the amount of fractional polarized radiation, yielding better agreement with observations. It is suggested that the simple expression for Q/V can be exploited as a probe for a wide variety of astrophysical plasmas with large Faraday rotation.

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