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
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.
|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:||12 Mar 2010 14:01|
|Last Modified:||16 Nov 2015 11:48|
|Publisher:||Institute of Physics Publishing|