On the theory of cyclotron lines in the spectra of magnetic white dwarfs

Details On the theory of cyclotron lines in the spectra of magnetic white dwarfs On the theory of cyclotron lines in the spectra of magnetic white dwarfs

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.105...73z&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 105, no. 1, Oct. 1984, p. 73-84.

Astronomy and Astrophysics

Astrophysics

18

Cyclotron Radiation, Magnetic Stars, Stellar Coronas, Stellar Spectra, White Dwarf Stars, Absorptivity, Electron Distribution, Emissivity, Gyrofrequency, Photosphere

Scientific paper

The radiation transfer at the gyrofrequency in the coronae of magnetic white dwarfs is considered. The electron distribution over Landau levels, taking both radiative and collisional transitions into account, is obtained. The emissivity and absorption coefficients of extraordinary radiation at the gyrofrequency are calculated. The ranges of parameters where cyclotron lines are observed in emission or absorption are found. The upper limit on coronal plasma density (2×1011 cm-3) for isolated magnetic white dwarfs with absorption lines in the spectrum is specified.

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