Eigenspectra of solar active region long-period oscillations

  title={Eigenspectra of solar active region long-period oscillations},
  author={G. Dumbadze and Bidzina M. Shergelashvili and Stefaan Poedts and T. V. Zaqarashvili and Maxim Khodachenko and Patrick De Causmaecker},
Context. We studied the low-frequency (cid:46) 0 . 5h − 1 (long-period (cid:38) 2h) oscillations of active regions (ARs). The investigation is based on an analysis of a time series built from Solar Dynamics Observatory / Helioseismic and Magnetic Imager photospheric magnetograms and comprises case studies of several types of AR structures. Aims. The main goals are to investigate whether ARs can be engaged in long-period oscillations as unified oscillatory entities and, if so, to determine the… 

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Living Reviews in Solar Physics

  • Sol. Phys., 275,
  • 2018