White Dwarf Magnetic Fields and the Mass-Radius Relation

Details White Dwarf Magnetic Fields and the Mass-Radius Relation White Dwarf Magnetic Fields and the Mass-Radius Relation

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.5202s&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #52.02; Bulletin of the American Astronomical Society, Vol. 31, p.902

Astronomy and Astrophysics

Astronomy

Scientific paper

Recently, some puzzling features have emerged from the accumulated radii and masses of white dwarfs based upon Hipparchos parallaxes. In particular, three stars have radii much smaller than prediced from their observed masses on the basis of standard models for white-dwarf structure, unless those white dwarf contain an iron core. In this talk we peresent a revised calculation of the white-dwarf mass-radius relation in the presence of an internal magnetic field. We find that for reasonable field strengths we are able to reproduced the observed radii for these stars as carbon white dwarfs with internal magnetic fields.

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