4 papers
Oscillations of red giant stars with magnetic damping in the core. II. Mixed mode visibilities on the red-giant branch
Jonas Müller, Saskia Hekker
Mode visibilities can be estimated from observed power spectra or from theory by making assumptions about the damping processes occurring in the star. However, a quantitative compa…
Asymptotic power spectra and visibilities of damped mixed modes
Jonas Müller, Quentin Coppée, Jordan Van Beeck +2
Recent observational studies of red giant stars have estimated the visibility of their mixed oscillation modes, which is a proxy of the average energy of these modes. Among other t…
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…
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…