Details

Autor(en) / Beteiligte

• Preusse, S.
• Kopp, A.
• Büchner, J.
• Motschmann, U.

Titel

A magnetic communication scenario for hot Jupiters

Ist Teil von

• Astronomy and astrophysics (Berlin), 2006-12, Vol.460 (1), p.317-322

Ort / Verlag

Les Ulis: EDP Sciences

Erscheinungsjahr

2006

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The observations of enhanced chromospheric activity on HD 179949 as well as on υ And with the same periods as their close-in planets seem to indicate some kind of magnetic interaction between star and planet. A constraint to any possible model are the large phase angles of $60^\circ$ and $169^\circ$, respectively. We present a simple model, which is based on the propagation of Alfvén waves within the stellar wind flow relative to the planet and which can meet this restriction. In the solar system such a model is successfully used to explain the current system between Io and Jupiter.