[HTML][HTML] 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 …

[HTML][HTML] Dynamics of the Tachocline

A Strugarek, B Belucz, AS Brun, M Dikpati… - Space Science …, 2023 - Springer
The solar tachocline is an internal region of the Sun possessing strong radial and latitudinal
shears straddling the base of the convective envelope. Based on helioseismic inversions …

Strong magnetic fields detected in the cores of 11 red giant stars using gravity-mode period spacings

S Deheuvels, G Li, J Ballot, F Lignières - Astronomy & Astrophysics, 2023 - aanda.org
Despite their importance in stellar evolution, little is known about magnetic fields in the
interior of stars. The recent seismic detection of magnetic fields in the core of several red …

Magnetohydrodynamic simulations of the Tayler instability in rotating stellar interiors

S Ji, J Fuller, D Lecoanet - Monthly Notices of the Royal …, 2023 - academic.oup.com
The Tayler instability is an important but poorly studied magnetohydrodynamic (MHD)
instability that likely operates in stellar interiors. The non-linear saturation of the Tayler …

Numerical simulations of the Tayler–Spruit dynamo in proto-magnetars

P Barrère, J Guilet, R Raynaud… - Monthly Notices of the …, 2023 - academic.oup.com
ABSTRACT The Tayler–Spruit dynamo is one of the most promising mechanisms proposed
to explain angular momentum transport during stellar evolution. Its development in proto …

[HTML][HTML] Asymmetries of frequency splittings of dipolar mixed modes: A window on the topology of deep magnetic fields

S Mathis, L Bugnet - Astronomy & Astrophysics, 2023 - aanda.org
Context. Space asteroseismology is revolutionizing our knowledge of the internal structure
and dynamics of stars. A breakthrough is ongoing with the recent discoveries of signatures …

Liquid-metal experiments on geophysical and astrophysical phenomena

F Stefani - Nature Reviews Physics, 2024 - nature.com
Recent decades have seen enormous progress in the experimental investigation of
fundamental processes that are relevant to geophysical and astrophysical fluid dynamics …

Subcritical transition to turbulence triggered by a magnetic dynamo

F Daniel, L Petitdemange, C Gissinger - Physical Review Fluids, 2023 - APS
It has recently been shown that a significant slowdown of many stars can be attributed to the
emergence of a strong magnetic field within the radiative region, where heat is transferred …

Asteroseismic measurement of core and envelope rotation rates for 2006 red giant branch stars

G Li, S Deheuvels, J Ballot - Astronomy & Astrophysics, 2024 - aanda.org
Context. Tens of thousands of red giant stars in the Kepler data exhibit solar-like oscillations.
The mixed-mode characteristics of their oscillations enable us to study the internal physics …

Asteroseismic signatures of core magnetism and rotation in hundreds of low-luminosity red giants

EJ Hatt, JMJ Ong, MB Nielsen… - Monthly Notices of …, 2024 - academic.oup.com
Red giant stars host solar-like oscillations which have mixed character, being sensitive to
conditions both in the outer convection zone and deep within the interior. The properties of …