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Strong resemblance between surface and deep zonal winds inside Jupiter revealed by high-degree gravity moments
Hao Cao, Jeremy Bloxham, Ryan S. Park +5
Jupiter's atmosphere-interior is a coupled fluid dynamical system strongly influenced by the rapid background rotation. While the visible atmosphere features east-west zonal winds…
A Global Simulation of the Dynamo, Zonal Jets, and Vortices on Saturn
Rakesh Kumar Yadav, Hao Cao, Jeremy Bloxham
The fluid dynamics in planet Saturn gives rise to alternating east-west jet streams, large cyclonic and anticyclonic vortices, and a dipole-dominant magnetic field which is highly…
A dynamo simulation generating Saturn-like small magnetic dipole tilts
Rakesh K. Yadav, Hao Cao, Jeremy Bloxham
Among planetary dynamos, the magnetic field of Saturn stands out in its exceptional level of axisymmetry. One of its peculiar features is that the magnetic dipole mode is tilted wi…
Investigating Barotropic Zonal Flow in Jupiter's Deep Atmosphere using Juno Gravitational Data
Laura Kulowski, Hao Cao, Rakesh K. Yadav +1
The high-precision Juno gravitational measurements allow us to infer the structure of Jupiter's deep atmospheric zonal flow. Since this inference is nonunique, it is important to e…
Deep convection-driven vortex formation on Jupiter and Saturn
Rakesh Kumar Yadav, Moritz Heimpel, Jeremy Bloxham
The surface of both Jupiter and Saturn has magnificent vortical storms which help shape the dynamic nature of their atmospheres. Land- and space-based observational campaigns over…
Estimating the magnetic field strength in hot Jupiters
Rakesh K. Yadav, Daniel P. Thorngren
A large fraction of known Jupiter like exoplanets are inflated as compared to Jupiter. These "hot" Jupiters orbit close to their parent star and are bombarded with intense starligh…
Effect of shear and magnetic field on the heat-transfer efficiency of convection in rotating spherical shells
Rakesh K. Yadav, Thomas Gastine, Ulrich R. Christensen +2
We study rotating thermal convection in spherical shells. We base our analysis on a set of about 450 direct numerical simulations of the (magneto)hydrodynamic equations under the B…
Scaling laws in spherical shell dynamos with free-slip boundaries
Rakesh K. Yadav, Thomas Gastine, Ulrich R. Christensen
Numerical simulations of convection driven rotating spherical shell dynamos have often been performed with rigid boundary conditions, as is appropriate for the metallic cores of te…