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Internal waves driven by stellar irradiation in a non-synchronized hot Jupiter

Published online by Cambridge University Press:  01 October 2007

Pin-Gao Gu
Affiliation:
Institute of Astronomy & Astrophysics, Academia Sinica, Taipei 106, Taiwan email: [email protected]
Gordon I. Ogilvie
Affiliation:
Dept. of Applied Mathematics & Theoretical Physics, University of Cambridge, CB3 0WA, UK email: [email protected]
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Abstract

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We investigate the dynamical response of a non-synchronized hot Jupiter to stellar irradiation. In our current model, the stellar radiation acts like a diurnal thermal forcing from the top of a radiative layer of a hot Jupiter. If the thermal forcing period is longer than the sound speed crossing time of the planet's surface, the forcing can excite internal waves propagating into the planet's interior. When the planet spins faster than its orbital motion, these waves carry negative angular momentum and are damped by radiative loss as they propagate downwards from the upper layer of the radiative zone. As a result, the upper layer gains the angular momentum from the lower layer of the radiative zone. Simple estimates of angular momentum flux are made for all transiting planets.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008

References

Bodenheimer, P., Laughlin, G., & Lin, D. N. C. 2003, ApJ, 592, 555CrossRefGoogle Scholar
Burrows, A., Hubeny, I., Budaj, J., Hubbard, W. B. 2007, ApJ, 661, 502CrossRefGoogle Scholar
Chapman, S. & Lindzen, R. 1970, Atmospheric Tides: Thermal and Gravtiational, Gordon and BreachGoogle Scholar
Eggleton, P. P., Kiseleva, L. G., & Hut, P. 1998, ApJ, 499, 853CrossRefGoogle Scholar
Knutson, H. A. et al. , 2007, Nature, 447, 183CrossRefGoogle Scholar
Ogilvie, G. I. & Lin, D. N. C. 2004, ApJ, 610, 477CrossRefGoogle Scholar
Pomraning, G. C. 1973, The equations of radiation hydrodynamics, Pergamon PressGoogle Scholar