Eigenspectra of solar active region long-period oscillations

G. Dumbadze, B. M. Shergelashvili, S. Poedts +3

We studied the low-frequency $\lesssim 0.5$h${}^{-1}$ (long-period $\gtrsim 2$h) oscillations of active regions (ARs). The investigation is based on an analysis of a time series…