Coronal mass ejections caused by filament eruptions.

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Mhd, Sun: Corona, Sun: Filaments, Sun: Prominences

Scientific paper

A model of CME arising due to drift motion of the coronal material in the presence of an eruptive prominence is presented. Magnetic field configuration is in accordance with a model of inverse polarity. In a region where magnetic pressure of the filament magnetic field is greater than gas pressure, rarefaction of plasma occurs. Near the boundary β=1 plasma is decelerated, and as a result, coronal density is increasing. Density enhancing near the surface β=1 leads to formation of a dense shell which can be correlated with an outer loop of CME. Two-dimensional numerical simulation displays a process of cavity and loop formation.

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