On the star-magnetosphere interaction of close-in exoplanets

Wing Huen Ip, Andreas Kopp, Juei Hwa Hu

研究成果: 雜誌貢獻期刊論文同行評審

123 引文 斯高帕斯(Scopus)

摘要

Numerical simulations using a resistive MHD code are performed in order to investigate the interaction of the magnetospheres of hot Jupiters (or close-in extrasolar giant planets) with the central host stars. Because of the sub-Alfvénic nature of the stellar wind outflow at the orbital positions of these close-in exoplanets, no bow shock would form. When the orientation of the stellar coronal magnetic field is favorable to strong coupling with magnetic reconnection, the power (∼1027 ergs s-1) generated could reach the level of a typical solar flare. As a particular type of star-planet atmospheric interaction, as investigated by Cuntz, Saar, & Musielak, magnetospheric interaction as studied in this Letter could lead to extensive energy injection into the auroral zones of the exoplanets, producing massive atmospheric escape process as recently detected.

原文???core.languages.en_GB???
頁(從 - 到)L53-L56
期刊Astrophysical Journal
602
發行號1 II
DOIs
出版狀態已出版 - 10 2月 2004

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