Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf..503b&link_type=abstract
SF2A-2002: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 24-29, 2002, Eds.: F. Combes and D. Barret,
Astronomy and Astrophysics
Astrophysics
Scientific paper
The interaction between pulsations and magnetic fields occurs in different kind of stars. These are the roAp, beta Cep and possibly RR Lyrae stars. The roAp stars are the best candidates to study such interaction because they have the largest magnetic fields. They are rapid pulsators in which the magnetic field (few kG) plays an essential role in the properties of these oscillations. Even if these stars are slow rotators (few days) we have shown that the rotation has a deep influence on the mode properties. I will then present in the first part the magnetic field effects alone (frequency shifts, distortion of the geometry) and in the second part I will present the combined effects of the magnetic field and rotation, including both Coriolis and centrifugal forces, and the consequences for the mode's inclination and for the observational light curves.
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