S320p.26 — Stellar Wind-Magnetosphere Interactions in Hot Jupiters

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Aug 10th at 6:00 PM until 7:30 PM

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Author(s): Derek L Buzasi1

Institution(s): 1. Florida Gulf Coast University

One potential star-planet interaction mechanism for hot Jupiters involves planetary heating via currents set up by interactions between the stellar wind and planetary magnetosphere. Early modeling results (Buzasi 2013) indicate that such currents, which are analogous to the terrestrial global electric circuit (GEC), have the potential to provide sufficient heating to account for the additional radius inflation seen in some hot Jupiters. Here we present a more detailed model of this phenomenon, exploring the scale of the effect, the circumstances under which it is likely to be significant, implications for the planetary magnetospheric structure, and observational signatures.