The damping of small-amplitude oscillations in quiescent prominences

Details The damping of small-amplitude oscillations in quiescent prominences The damping of small-amplitude oscillations in quiescent prominences

Aug 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010adspr..46..364b&link_type=abstract

Advances in Space Research, Volume 46, Issue 4, p. 364-376.

Physics

4

Scientific paper

The presence of small-amplitude oscillations in prominences is well-known from long time ago. These oscillations, whose exciters are still unknown, seem to be of local nature and are interpreted in terms of magnetohydrodynamic (MHD) waves. During last years, observational evidence about the damping of these oscillations has grown and several mechanisms able to damp these oscillations have been the subject of intense theoretical modelling. Among them, the most efficient seem to be radiative cooling and ion-neutral collisions. Radiative cooling is able to damp slow MHD waves efficiently, while ion-neutral collisions, in partially ionised plasmas like those of solar prominences, can also damp fast MHD waves. In this paper, we plan to summarize our current knowledge about the time and spatial damping of small-amplitude oscillations in prominences.

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