Cyclotron absorption in magnetic white dwarfs

Details Cyclotron absorption in magnetic white dwarfs Cyclotron absorption in magnetic white dwarfs

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189...69m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 189, Oct. 1979, p. 69-77. Research supported by the Australian Research

Astronomy and Astrophysics

Astronomy

22

Cyclotron Radiation, Electromagnetic Absorption, Magnetic Stars, White Dwarf Stars, Absorption Spectra, Atmospheric Models, Collision Parameters, Stellar Atmospheres

Scientific paper

The possible effect of cyclotron absorption in highly magnetic white dwarfs is investigated using model atmospheres. For a dipole field geometry, Doppler broadened cyclotron absorption is unlikely to produce significant features at all, while collisionally broadened cyclotron absorption can produce a broad shallow absorption feature which may become more significant in the case of birefringence and scattering or of a very steep temperature gradient near the stellar surface. The broad absorption feature and circular polarization of G240-72 may be explained through these latter mechanisms.

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