Small-scale dynamos: from idealized models to solar and stellar applications

M Rempel, T Bhatia, L Bellot Rubio… - Space Science …, 2023 - Springer
In this article we review small-scale dynamo processes that are responsible for magnetic
field generation on scales comparable to and smaller than the energy carrying scales of …

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 …

Solar inertial modes: Observations, identification, and diagnostic promise

L Gizon, RH Cameron, Y Bekki, AC Birch… - Astronomy & …, 2021 - aanda.org
The oscillations of a slowly rotating star have long been classified into spheroidal and
toroidal modes. The spheroidal modes include the well-known 5-min acoustic modes used …

Generation of solar-like differential rotation

H Hotta, K Kusano, R Shimada - The Astrophysical Journal, 2022 - iopscience.iop.org
We analyze the simulation result shown in Hotta & Kusano (2021) in which the solar-like
differential rotation is reproduced. The Sun is rotating differentially with the fast equator and …

Theory of solar oscillations in the inertial frequency range: Amplitudes of equatorial modes from a nonlinear rotating convection simulation

Y Bekki, RH Cameron, L Gizon - Astronomy & Astrophysics, 2022 - aanda.org
Context. Several types of inertial modes have been detected on the Sun. Properties of these
inertial modes have been studied in the linear regime, but have not been studied in …

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 …

Theory of solar oscillations in the inertial frequency range: Linear modes of the convection zone

Y Bekki, RH Cameron, L Gizon - Astronomy & Astrophysics, 2022 - aanda.org
Context. Several types of global-scale inertial modes of oscillation have been observed on
the Sun. These include the equatorial Rossby modes, critical-latitude modes, and high …

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 …

Transition from anti-solar to solar-like differential rotation: dependence on Prandtl number

PJ Käpylä - Astronomy & Astrophysics, 2023 - aanda.org
Context. Late-type stars such as the Sun rotate differentially due to the interaction of
turbulent convection and rotation. Aims. The aim of the study is to investigate the effects of …

Star-in-a-box simulations of fully convective stars

PJ Käpylä - Astronomy & Astrophysics, 2021 - aanda.org
Context. Main-sequence late-type stars with masses of less than 0.35 M⊙ are fully
convective. Aims. The goal is to study convection, differential rotation, and dynamos as …