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Contributed talk: Rossby waves in the radiative interior

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DY2W03 - Modeling, observing and understanding flows and magnetic fields in the Earth's core and in the Sun

Recent observations of Rossby waves and other more exotic forms of inertial oscillations in the Sun’s convective zone have kindled the hope that such waves might be used as a seismic probe of the Sun’s interior. Here we present a suite of 3D numerical simulations in full spherical geometry that model the Sun’s convective zone and upper radiative interior. With these models, we demonstrate that Rossby waves are ubiquitous within the radiative interior as well as within the convective zone, potentially explaining the large horizontal velocities seen in the radiative interior. Their presence in the radiative zone implies that the Sun’s radiative interior is not quiescent, but instead may play a role in the dynamics of the tachocline.

This talk is part of the Isaac Newton Institute Seminar Series series.

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