Magneto-optical effects from free electrons in magnetic white dwarfs

Details Magneto-optical effects from free electrons in magnetic white dwarfs Magneto-optical effects from free electrons in magnetic white dwarfs

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...242..206j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 242, no. 1, Feb. 1991, p. 206-210.

Astronomy and Astrophysics

Astrophysics

9

Kerr Magnetooptical Effect, Magnetic Stars, Peculiar Stars, Stellar Spectra, White Dwarf Stars, A Stars, Linear Polarization, Radiative Transfer, Stellar Magnetic Fields

Scientific paper

When calculating synthetic spectra and theoretical values for the polarization of magnetic white dwarfs, it is important to take the magnetooptical effects arising from free electrons into account. The hitherto used formalism of Pacholczyk (1976) breaks down at fields higher than 100 MG where the cyclotron resonance occurs in the optical region of the electromagnetic spectrum. In a new program for the analysis of magnetic white dwarfs a consistent approach is used that allows for damping by electron collisions. Inaccuracies originating from the discrete division of the stellar disk into a limited number of surface elements are reduced by taking into account the variation of the magnetic field over the individual elements.

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