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Magnetodisk-dominated magnetospheres of close orbit giant exoplanets

Published online by Cambridge University Press:  13 February 2013

M.L. Khodachenko ,
I.I. Alexeev ,
E.S. Belenkaya  and
H. Lammer
M.L. Khodachenko
Affiliation:
Space Research Institute, Austrian Academy of Sciences, Graz 8042, Austria
I.I. Alexeev
Affiliation:
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119992, Russia
E.S. Belenkaya
Affiliation:
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119992, Russia
H. Lammer
Affiliation:
Space Research Institute, Austrian Academy of Sciences, Graz 8042, Austria

Abstract

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A more complete view of a magnetosphere of a close orbit giant exoplanet, so called “Hot Jupiter”, based on the Paraboloid Magnetospheric Model (PMM), is proposed. The key element of the considered model consists in taking into account the effects of an expanding upper atmosphere of a Hot Jupiter heated and ionized by the stellar XUV radiation. As a result, an extended magnetodisk is built around the planet. The magnetic field produced by magnetodisk ring currents, dominates above the contribution of intrinsic magnetic dipole of a Hot Jupiter and finally determines the size and shape of the whole magnetosphere.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 58: ECLA - European Conference on Laboratory Astrophysics , 2012 , pp. 233 - 237
Copyright
© The Author(s) 2013

References

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