Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...269..668k&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 269, June 15, 1983, p. 668-670.
Astronomy and Astrophysics
Astrophysics
1
Electromagnetic Absorption, Electromagnetic Wave Transmission, Magnetic Stars, Plasma-Electromagnetic Interaction, Stellar Magnetic Fields, White Dwarf Stars, Circular Polarization, Radiative Transfer
Scientific paper
A monochromatic plane electromagnetic wave propagating in a plasma is considered assuming that the wave is propagating along the positive z-direction at an angle to the direction of an external magnetic field. The expression of Landau and Lifshitz (1960) for the time-averaged power dissipated per unit volume is used as the starting point, and a general expression for the power absorbed is derived. In the particular case of circularly polarized radiation, it is found that left circularly polarized radiation is absorbed more than right circularly polarized radiation at all angles. The implications of the results obtained are discussed, with particular attention given to the deduction of the magnitude of the magnetic field of magnetic white dwarfs.
Ford G. W.
Khandker A.
Oconnell R. F.
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