Lynx Seminar Series

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Revealing the Invisible Universe

Observable Impacts of Exoplanets on Star Hosts from an X-ray Perspective

Scott Wolk, Center for Astrophysics

Abstract

Since soon after the discovery of hot Jupiters, it had been suspected that interaction of these massive bodies with their host stars could give rise to observable signals. We discuss the observational evidence for star-planet interactions (SPI) of tidal and magnetic origin observed in X-rays and FUV. Hot Jupiters can significantly impact the activity of their host stars through tidal and magnetic interaction, leading to either increased or decreased stellar activity -- depending on the internal structure of the host star and the properties of the hosted planet. I will show several examples. I will end with a discussion of synergies with the proposed missions of the 2030s.

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