Damping of Oscillations in Red Giants by Resonant Mode Coupling
Damping of Oscillations in Red Giants by Resonant Mode Coupling
Asteroseismic studies of red giants generally assume that the oscillation modes can be treated as linear perturbations to the background star. However, observations by the Kepler mission show that the oscillation amplitudes increase dramatically as stars ascend the red giant branch. The importance of nonlinear effects should therefore be assessed. …