Taroyan, Y. (2008) Alfvén instability in a compressible flow. Physical Review Letters, 101 (24). Art. No. 245001. ISSN 1079-7114
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Published Version: http://dx.doi.org/10.1103/PhysRevLett.101.245001
Abstract
A new ideal magnetohydrodynamic instability is presented. It is shown that linear incompressible Alfvénic disturbances can get over-reflected and exponentially amplified in compressible plasma flows. A simple and transparent stability criterion for a two-layer model is derived. The instability does not require a shear in the flow and may arise for rather moderate sub-Alfvénic flow speeds. It is therefore important to be aware of the Alfvén instability when dealing with laboratory or astrophysical plasma flows.
| Item Type: | Article |
|---|---|
| Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield) ?? Sheffield.AMA ?? |
| Depositing User: | Mrs Megan Hobbs |
| Date Deposited: | 24 Mar 2010 15:14 |
| Last Modified: | 07 Jun 2010 11:09 |
| Published Version: | http://dx.doi.org/10.1103/PhysRevLett.101.245001 |
| Status: | Published |
| Publisher: | American Physical Society |
| Identification Number: | 10.1103/PhysRevLett.101.245001 |
| URI: | http://eprints.whiterose.ac.uk/id/eprint/10682 |
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