3 papers
astro-ph.SR2025
Weak or strong: coupling of mixed oscillation modes on the red-giant branch
T. van Lier, J. Müller, S. Hekker
Context. The high precision of recent asteroseismic observations of red-giant stars has revealed the presence of mixed dipole modes in their oscillation spectra. These modes allow…
astro-ph.SR2025
Oscillations of red giant stars with magnetic damping in the core. I. Dissipation of mode energy in dipole-like magnetic fields
Jonas Müller, Quentin Coppée, Saskia Hekker
Strong magnetic fields in the core of red-giant branch stars are expected to suppress the amplitudes of the multipole modes. This occurs when the strength of the internal magnetic…
astro-ph.SR2024
The radial modes of stars with suppressed dipole modes
Quentin Coppée, Jonas Müller, Michaël Bazot +1
The Kepler space mission provided high-quality light curves for more than 16 000 red giants. The global stellar oscillations extracted from these light curves carry information abo…