3 papers
astro-ph.SR2026
Mean-field interpretation of star-in-a-box simulations of red giants
Carolina A. Ortiz-Rodríguez, Axel Brandenburg, Petri J. Käpylä
Context: The origin of magnetic fields and the dynamo mechanism in red giants are still not fully understood. Aims: We aim to interpret the dynamo behaviour of global 3D simulation…
astro-ph.SR2025
Shaping core dynamos in A-type stars: The role of dipolar fossil fields
J. P. Hidalgo, P. J. Käpylä, D. R. G Schleicher +2
Large-scale magnetic fields of Ap/Bp stars are stable over long timescales and have typically simple dipolar geometries, leading to the idea of a fossil origin. These stars are als…
astro-ph.SR2024
Magnetohydrodynamic simulations of A-type stars: Long-term evolution of core dynamo cycles
J. P. Hidalgo, P. J. Käpylä, D. R. G Schleicher +2
Early-type stars have convective cores due to a steep temperature gradient produced by the CNO cycle. These cores can host dynamos, and the generated magnetic fields can be relevan…