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Polarized Radiation from AM Herculis Stars

Published online by Cambridge University Press:  12 April 2016

P. E. Barrett  and
G. Chanmugam
P. E. Barrett
Affiliation:
Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001
G. Chanmugam
Affiliation:
Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001

Abstract

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Calculations of polarized cyclotron radiation from magnetized hot plasmas are modified to include the effects of collisions and photon scattering. These effects produce a general reduction in both the linear and circular polarization. The background unpolarized flux which had previously been invoked, in an ad hoc manner for the collisionless case, is no longer required to bring agreement with observations. The most striking effect is at small viewing angles with the magnetic field, where the fractional circular polarization is reduced from nearly 100% to close to 0%. The calculations also show that the shape of the linear polarization pulse is essentially unchanged.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 72: Cataclysmic Variables and Related Objects , 1983 , pp. 217 - 221
Copyright
Copyright © Reidel 1983

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