Integral polarization of hydrogen spectral lines in a strong magnetic field

Details Integral polarization of hydrogen spectral lines in a strong magnetic field Integral polarization of hydrogen spectral lines in a strong magnetic field

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976azh....53...63p&link_type=abstract

Astronomicheskii Zhurnal, vol. 53, no. 1, 1976, p. 63-73. In Russian.

Astronomy and Astrophysics

Astronomy

1

Fine Structure, Hydrogen, Polarization Characteristics, Stellar Magnetic Fields, Stellar Spectra, White Dwarf Stars, Absorptivity, Atomic Energy Levels, Balmer Series, Circular Polarization, Field Strength, Line Spectra, Zeeman Effect

Scientific paper

The integral circular and linear polarizations of hydrogen lines in a strong magnetic field are calculated. It is shown that the integral circular polarization is a result of different populations in the Zeeman sublevels and of different oscillator strengths for the violet and red sigma components of the Zeeman triplet. The sign of this polarization may vary for the different Balmer lines, and its magnitude is comparable to that of the polarization associated with free-free transitions in a magnetic field. The integral linear polarization is shown to arise mainly from different shifts of the pi and sigma components due to the quadratic Zeeman effect. Its magnitude may be comparable to that of the circular polarization for transitions involving high quantum levels and significantly exceeds the linear polarization associated with continuum processes. It is concluded that the examined effects may be responsible for the polarization observed in magnetic white dwarfs.

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