A test of the dipole model for the rotating magnetic white dwarf Feige 7

Details A test of the dipole model for the rotating magnetic white dwarf Feige 7 A test of the dipole model for the rotating magnetic white dwarf Feige 7

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...301..177m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 301, Feb. 1, 1986, p. 177-184.

Computer Science

Sound

17

Magnetic Dipoles, Magnetic Stars, Stellar Magnetic Fields, Stellar Rotation, White Dwarf Stars, Circular Polarization, Field Strength, Helium, Magnetic Field Configurations

Scientific paper

A detailed mathematical model of the rotating magnetic white dwarf Feige 7 is presented to test the conclusions of Liebert et al. (1977) regarding that star. Liebert et al. presented observations of flux and circular polarization and utilized a variety of evidence to infer values of the magnetic field strength, field geometry, and rotation angle, among other parameters. Their inferences are found to be generally sound, with several important qualifications and alterations. In particular, it is found to be impossible to model the observed periodic variation in the positions of the absorption lines using a dipole field.

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