SIMBAD references

2019ApJ...874L..23W - Astrophys. J., 874, L23-L23 (2019/April-1)

Nonthermal emission from the interaction of magnetized exoplanets with the wind of their host star.

WANG X. and LOEB A.

Abstract (from CDS):

We study the nonthermal emission from the interaction between magnetized Jupiter-like exoplanets and the wind from their host star. The supersonic motion of planets through the wind forms a bow shock that accelerates electrons that produce nonthermal radiation across a broad wavelength range. We discuss three wind mass-loss rates: {dot}Mw∼10–14, 10–9, 10–6M☉yr–1 corresponding to solar-type, T Tauri, and massive O/B-type stars, respectively. We find that the expected radio synchrotron emission from a Jupiter-like planet is detectable by the Jansky Very Large Array and the Square Kilometre Array at ∼1–10GHz out to a distance of ∼100 pc, whereas the infrared emission is detectable by the James Webb Space Telescope out to a similar distance. Inverse Compton scattering of the stellar radiation results in X-ray emission detectable by Chandra X-ray Observatory out to ∼150 pc. Finally, we apply our model to the upper limit constraints on V380 Tau, the first star-hot Jupiter system observed in radio wavelength. Our bow-shock model provides constraints on the magnetic field, the interplanetary medium, and the nonthermal emission efficiency in V380 Tau.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): planet-star interactions - radio continuum: planetary systems - shock waves - stars: mass-loss

Simbad objects: 4

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