Simulations of solar and stellar dynamos and their theoretical interpretation

PJ Käpylä, MK Browning, AS Brun, G Guerrero… - Space Science …, 2023 - Springer
We review the state of the art of three dimensional numerical simulations of solar and stellar
dynamos. We summarize fundamental constraints of numerical modelling and the …

Dynamics of large-scale solar flows

H Hotta, Y Bekki, L Gizon, Q Noraz, M Rast - Space Science Reviews, 2023 - Springer
The Sun's axisymmetric large-scale flows, differential rotation and meridional circulation, are
thought to be maintained by the influence of rotation on the thermal-convective motions in …

The Sun's differential rotation is controlled by high-latitude baroclinically unstable inertial modes

Y Bekki, RH Cameron, L Gizon - Science Advances, 2024 - science.org
Rapidly rotating fluids have a rotation profile that depends only on the distance from the
rotation axis, in accordance with the Taylor-Proudman theorem. Although the Sun was …

Tidally Excited Inertial Waves in Stars and Planets: Exploring the Frequency-dependent and Averaged Dissipation with Nonlinear Simulations

A Astoul, AJ Barker - The Astrophysical Journal Letters, 2023 - iopscience.iop.org
We simulate the nonlinear hydrodynamical evolution of tidally excited inertial waves in
convective envelopes of rotating stars and giant planets modeled as spherical shells …

Three-dimensional non-kinematic simulation of the post-emergence evolution of bipolar magnetic regions and the Babcock-Leighton dynamo of the Sun

Y Bekki, RH Cameron - Astronomy & Astrophysics, 2023 - aanda.org
Context. The Babcock-Leighton flux-transport model is a widely accepted dynamo model of
the Sun that can explain many observational aspects of solar magnetic activity. This dynamo …

Interaction of solar inertial modes with turbulent convection-A 2D model for the excitation of linearly stable modes

J Philidet, L Gizon - Astronomy & Astrophysics, 2023 - aanda.org
Context. Inertial modes have been observed on the Sun at low longitudinal wavenumbers.
These modes probe the dynamics and structure of the solar convective zone down to the …

Numerical study of non-toroidal inertial modes with l= m+ 1 radial vorticity in the Sun's convection zone

Y Bekki - Astronomy & Astrophysics, 2024 - aanda.org
Various types of inertial modes have been observed and identified on the Sun, including the
equatorial Rossby modes, critical-latitude modes, and high-latitude modes. Recent …

Observed power and frequency variations of solar rossby waves with solar cycles

M Waidele, J Zhao - The Astrophysical Journal Letters, 2023 - iopscience.iop.org
Several recent studies utilizing different helioseismic methods have confirmed the presence
of large-scale vorticity waves known as solar Rossby waves within the Sun. Rossby waves …

[HTML][HTML] Zonostrophic turbulence in the subsurface oceans of the Jovian and Saturnian moons

S Cabanes, T Gastine, A Fournier - Icarus, 2024 - Elsevier
In order to characterize the global circulation of the subsurface ocean of Jovian and
Saturnian moons, we analyse the properties of 21 three-dimensional simulations of …

Enhancing Solar Convection Analysis With Multi‐Core Processors and GPUs

A Heidari, Z Amiri, MAJ Jamali… - Engineering …, 2024 - Wiley Online Library
In the realm of astrophysical numerical calculations, the demand for enhanced computing
power is imperative. The time‐consuming nature of calculations, particularly in the domain of …