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EP: Extraterrestrische Physik

EP 6: Poster

EP 6.10: Poster

Dienstag, 14. März 2006, 14:00–16:30, C

Interaction between Hot Jupiters and their central stars — •Sabine Preusse¹, Andreas Kopp², Jörg Büchner¹, and Uwe Motschmann³ — ¹Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau — ²Theoretische Physik IV, Ruhr-Universität Bochum, 44780 Bochum — ³Institut für Theoretische Physik, TU Braunschweig, Mendelssohnstraße 3, 38106 Braunschweig

A decade ago the first extrasolar planets around main sequence stars were detected. A surprising feature was the great number of planets very close (< 0.06 AU) to their stars. If their mass is comparable to that of Jupiter they are called No-dqHot JupitersNo-dq. Such a closeness of planet and central body does not occur for Solar systems planets but for planetary satellites. For these a strong interaction with their planet can be observed. Possibly the most remarkable and best understood example is Io interacting with Jupiter. Therefore, close-in extrasolar planetary systems are often considered to be scaled up versions of Io (the extrasolar planet) and Jupiter (the central star). This is one of the interaction scenarios for Hot Jupiters and their central stars which we study on the basis of realistic stellar wind models by numerical simulations in the frame of resistive magnetohydrodynamics (MHD).