First Simultaneous Observation of H-alpha Moreton Wave, EUV Wave, and Filament/Prominence Oscillations

TL;DR

This study presents the first simultaneous observation of H-alpha Moreton waves, EUV waves, and filament/prominence oscillations during a major solar flare, revealing detailed wave interactions and oscillation triggers.

Contribution

It provides the first concurrent observations of multiple wave phenomena and prominence oscillations, enhancing understanding of solar flare-associated wave dynamics.

Findings

Identified both bright and faint EUV coronal waves associated with the Moreton wave.

First simultaneous observation of prominence and filament oscillations in H-alpha and EUV.

Measured wave velocities consistent with fast-mode MHD wave predictions.

Abstract

We report on the first simultaneous observation of an H-alpha Moreton wave, the corresponding EUV fast coronal waves, and a slow and bright EUV wave (typical EIT wave). Associated with an X6.9 flare that occurred on 2011 August 9 at the active region NOAA 11263, we observed a Moreton wave in the H-alpha images taken by the Solar Magnetic Activity Research Telescope (SMART) at Hida Observatory of Kyoto University. In the EUV images obtained by the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamic Observatory (SDO) we found not only the corresponding EUV fast "bright" coronal wave, but also the EUV fast "faint" wave that is not associated with the H-alpha Moreton wave. We also found a slow EUV wave, which corresponds to a typical EIT wave. Furthermore, we observed, for the first time, the oscillations of a prominence and a filament, simultaneously, both in the H-alpha and EUV images. To trigger the oscillations by the flare-associated coronal disturbance, we expect a coronal wave as fast as the fast-mode MHD wave with the velocity of about 570 - 800 km/s. These velocities are consistent with those of the observed Moreton wave and the EUV fast coronal wave.