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Large amplitude oscillations in prominences

Tripathi, D., Isobe, H. and Jain, R. (2009) Large amplitude oscillations in prominences. Space Science Reviews, 149 (1 - 4). pp. 283-298. ISSN 0038-6308

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Abstract

Since the first reports of oscillations in prominences in the 1930s, there have been major theoretical and observational developments to understand the nature of these oscillatory phenomena, leading to the whole new field of the so-called “prominence seismology”. There are two types of oscillatory phenomena observed in prominences; “small amplitude oscillations” (2–3 km s−1), which are quite common, and “large-amplitude oscillations” (>20 km s−1) for which observations are scarce. Large-amplitude oscillations have been found as “winking filament” in Hα as well as motion in the plane-of-sky in Hα, EUV, micro-wave and He 10830 observations. Historically, it has been suggested that the large-amplitude oscillations in prominences were triggered by disturbances such as fastmode MHD waves (Moreton wave) produced by remote flares. Recent observations show, in addition, that near-by flares or jets can also create such large-amplitude oscillations in prominences. Large-amplitude oscillations, which are observed both in transverse as well as longitudinal direction, have a range of periods varying from tens of minutes to a few hours. Using the observed period of oscillation and simple theoretical models, the obtained magnetic field in prominences has shown quite a good agreement with directly measured one and, therefore, justifies prominence seismology as a powerful diagnostic tool. On rare occasions, when the large-amplitude oscillations have been observed before or during the eruption, the oscillations may be applied to diagnose the stability and the eruption mechanism. Here we review the recent developments and understanding in the observational properties of large-amplitude oscillations and their trigger mechanisms and stability in the context of prominence seismology.

Item Type: Article
Copyright, Publisher and Additional Information: © Springer 2009. This is an author produced version of a paper published in 'Space Science Reviews'. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: sun, filaments, prominences, Coronal waves, Oscillations
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield)
Depositing User: Mrs Megan Hobbs
Date Deposited: 26 Mar 2010 17:32
Last Modified: 12 Jun 2014 09:34
Published Version: http://dx.doi.org/10.1007/s11214-009-9583-9
Status: Published
Publisher: Springer Netherlands
Refereed: Yes
Identification Number: 10.1007/s11214-009-9583-9
URI: http://eprints.whiterose.ac.uk/id/eprint/10725

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