Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.191..721k&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 191, June 1980, p. 721-728.
Astronomy and Astrophysics
Astronomy
20
Conduction Electrons, Conductive Heat Transfer, Magnetic Stars, Stellar Mass Accretion, White Dwarf Stars, Free Electrons, Radiative Transfer, Steady State, Stellar Luminosity, Ultraviolet Radiation, X Rays
Scientific paper
The importance of electron conduction for the accretion columns of a magnetized white dwarf is investigated. It is found that two basic types of steady solution exist: (1) free-free plus cyclotron cooling much greater than conduction, and (2) conduction much greater than free-free plus cyclotron cooling. The first type of solution, which has been discussed earlier, predicts the soft X-ray and hard UV luminosity to be approximately equal to the sum of the hard X-ray and optical (and soft UV, infrared) luminosities. Solution (2) predicts instead the soft X-ray and hard UV luminosity to be much greater than the sum of the hard X-ray and optical luminosities and thus agrees with the latest results on AM Her, with which detailed comparison is made.
King Andrew R.
Lasota Jean-Pierre
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