Nonlinear Mixed Modes in Red Giants
Nonlinear Mixed Modes in Red Giants
Turbulent motions in the convective envelope of red giants excite a rich spectrum of solar-like oscillation modes. Observations by CoRoT and Kepler have shown that the mode amplitudes increase dramatically as the stars ascend the red giant branch, i.e., as the frequency of maximum power, $\nu_\mathrm{max}$, decreases. Most studies nonetheless …