A study of a coronal hole associated with a large filament eruption
Fecha
2017
Tipo
artĆculo original
Autores
GutiƩrrez Garro, Heidy
Taliashvili Enacolopas, Lela
Lazarian, Alexandre
Mouradian, Zadig
TĆtulo de la revista
ISSN de la revista
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Resumen
We report the results of a detailed study of an equatorial coronal hole and a dimming region related to the eruptions of a nearby large filament and subsequent coronal mass ejections (CMEs). The dynamic eruptions of the filament and the associated CMEs are probably related to the magnetic reconnection involving the magnetic field lines at the filament footpoints. During the starting processes of the filament eruption, we observed several newly emerged small magnetic flux concentrations close to the filament footpoints. Disturbance increase in the prominence body was observed during the pre-eruption processes. After the filament eruption, we observed evacuated filament material from the filament channel towards the coronal hole. Thus, all the region is perturbed and EUV loops and bright points are observed before and after the eruptions. Additionally, after the CME, we observed the disappearance of the dimming region and the coronal hole, followed by photospheric magnetic diffusion. We discussed a possible magnetic reconnection scenario and MHD waves involved during these processes.
DescripciĆ³n
Palabras clave
Sun: chromosphere, Sun: corona, Sun: coronal mass ejections (CMEs), Sun: filaments, prominences, Sun: oscillations