Derives hot Jupiter magnetic fields of 20-120 G from Ca II K star-planet interaction signals, exceeding rotation-based dynamo predictions but consistent with internal heat flux scaling.
The gray bands in all panels show the range of wavelengths used to normalize the spectra or fit the continuum flux
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Magnetic field strengths of hot Jupiters from signals of star-planet interactions
Derives hot Jupiter magnetic fields of 20-120 G from Ca II K star-planet interaction signals, exceeding rotation-based dynamo predictions but consistent with internal heat flux scaling.