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The decentered magnetic dipole: a challenge for modelling

Published online by Cambridge University Press:  02 March 2005

Ewald Gerth  and
Yurij V. Glagolevskij
Ewald Gerth
Affiliation:
D-14471 Potsdam, Gontardstr. 130, Germany email: ewald-gerth@t-online.de
Yurij V. Glagolevskij
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Karachaevo-Cherkesia, 369167 Russia. email: glagol@sao.ru
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Abstract

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The global bipolar structure of the magnetic surface field is asymmetric for many stars, making its analytical description by an expansion of spherical harmonics problematic because of the coordinates. Landstreet (1970) proposed that the asymmetry could be understood assuming a decentered magnetic dipole in the stellar interior. Its surface field can be calculated for different arrangements inside and outside the star using the Magnetic Charge Distribution method. We demonstrate the effect for the two cases of the shift of the dipole along and perpendicular to the radial direction.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Keywords

Methods: analyticalstars: magnetic field
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS224 , July 2004 , pp. 629 - 632
Copyright
© 2004 International Astronomical Union