The Faraday Rotation and Linear Polarization of Light in Stellar Atmospheres

Details The Faraday Rotation and Linear Polarization of Light in Stellar Atmospheres The Faraday Rotation and Linear Polarization of Light in Stellar Atmospheres

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...419..294s&link_type=abstract

Astrophysical Journal v.419, p.294

Astronomy and Astrophysics

Astronomy

4

Stars: Atmospheres, Stars: Magnetic Fields, Polarization, Radiative Transfer

Scientific paper

A simple method of calculation of linear light polarization from stars with given distribution of surface magnetic fields is proposed. The method uses known models of atmospheres (Kurucz). The atmospheres are considered with magnetic fields less than 106 G taking into account only the Faraday rotation and neglecting the effects of dichroism. The spectra of the integral polarization of light in the range λ ≅ 0.3-3.3 microns from stars with dipole magnetic field configuration are calculated. It is shown that the observable values of polarization exist only for the surfaces of relatively small magnetic fields (1-200 G). For larger magnetic fields, the integral polarization arises from nonmagnetized regions of a star and is also calculated by the same method.

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