Gordovskyy, M. and Jain, R. (2008) Amplitude suppression and absorption of p-modes in magnetic flux tube. The Astrophysical Journal, 681 (1). pp. 664-671. ISSN 1538-4357
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The interaction of p-modes (acoustic waves) with a magnetic flux tube is investigated. A set of linearized MHD equations is solved numerically in a two-dimensional domainwith cylindrical geometry. Thewave functions for p-modes are calculated in and around magnetic flux tubes using eigenfunctions from the unperturbed solution as a boundary condition. The amplitudes of the oscillations are found to be suppressed in the magnetized region with the suppression decreasing with depth. It is also found that the absorption of p-modes strongly depends on the degree l as well as the flux tube radius and the magnetic field strength. Convergence of magnetic field may be necessary in order to fit simultaneously the observed phase shifts and absorption coefficients.
| 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: | 12 Mar 2010 14:01 |
| Last Modified: | 07 Jun 2010 11:10 |
| Published Version: | http://dx.doi.org/10.1086/588208 |
| Status: | Published |
| Publisher: | Institute of Physics Publishing |
| Identification Number: | 10.1086/588208 |
| URI: | http://eprints.whiterose.ac.uk/id/eprint/10492 |
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