Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2010-02-18
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
36 pages, 16 figures, Space Science Reviews (accepted)
Scientific paper
Small amplitude oscillations are a commonly observed feature in prominences/filaments. These oscillations appear to be of local nature, are associated to the fine structure of prominence plasmas, and simultaneous flows and counterflows are also present. The existing observational evidence reveals that small amplitude oscillations, after excited, are damped in short spatial and temporal scales by some as yet not well determined physical mechanism(s). Commonly, these oscillations have been interpreted in terms of linear magnetohydrodynamic (MHD) waves, and this paper reviews the theoretical damping mechanisms that have been recently put forward in order to explain the observed attenuation scales. These mechanisms include thermal effects, through non-adiabatic processes, mass flows, resonant damping in non-uniform media, and partial ionization effects. The relevance of each mechanism is assessed by comparing the spatial and time scales produced by each of them with those obtained from observations. Also, the application of the latest theoretical results to perform prominence seismology is discussed, aiming to determine physical parameters in prominence plasmas that are difficult to measure by direct means.
Arregui Inigo
Ballester Jose Luis
No associations
LandOfFree
Damping mechanisms for oscillations in solar prominences does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Damping mechanisms for oscillations in solar prominences, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Damping mechanisms for oscillations in solar prominences will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-405647