Hydrodynamics of Highly Irradiated Planetary Atmospheres

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Among the discovered extrasolar planets, a large fraction are close-in giant planets orbiting with periods of only a few days. Unlike Jupiter, intense stellar irradiation and slow rotation due to tidal locking drive unique flow dynamics across the surfaces of these planets. Current and ongoing transit and photometric monitoring campaigns have allowed us an unprecedented look the energy distribution resulting from these flows. Here I present 3D radiative hydrodynamical studies of this class of planets. Recent improvements to our techniques allow for the simultaneous solution of both the radiative and hydrodynamical energy equations. Such an approach allows for the detailed study of the role of both absorption and emission opacities, rotation, and stellar proximity while still solving the full Navier-Stokes equations. Ultimately, the understanding of the efficiency of redistribution will provide important clues to the composition and thermal history of these planets.

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