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Phase mixing of a three dimensional magnetohydrodynamic pulse
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Tsiklauri, D., Nakariakov, V. M. (Valery M.) and Rowlands, G. (George) (2003) Phase mixing of a three dimensional magnetohydrodynamic pulse. Astronomy & Astrophysics, Vol.400 (No.3). pp. 1051-1055. doi:10.1051/0004-6361:20030062 ISSN 0004-6361.
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Official URL: http://dx.doi.org/10.1051/0004-6361:20030062
Abstract
Phase mixing of a three dimensional magnetohydrodynamic (MHD) pulse is studied in the compressive, three-dimensional (without an ignorable coordinate) regime. It is shown that the efficiency of decay of an Alfvénic part of a compressible MHD pulse is related linearly to the degree of localization of the pulse in the homogeneous transverse direction. In the developed stage of phase mixing (for large times), coupling to its compressive part does not alter the power-law decay of an Alfvénic part of a compressible MHD pulse. The same applies to the dependence upon the resistivity of the Alfvénic part of the pulse. All this implies that the dynamics of Alfvén waves can still be qualitatively understood in terms of the previous 2.5D models. Thus, the phase mixing remains a relevant paradigm for the coronal heating applications in the realistic 3D geometry and compressive plasma.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QB Astronomy | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Magnetohydrodynamic waves, Sun -- Corona | ||||
Journal or Publication Title: | Astronomy & Astrophysics | ||||
Publisher: | EDP Sciences | ||||
ISSN: | 0004-6361 | ||||
Official Date: | March 2003 | ||||
Dates: |
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Volume: | Vol.400 | ||||
Number: | No.3 | ||||
Page Range: | pp. 1051-1055 | ||||
DOI: | 10.1051/0004-6361:20030062 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Funder: | Leverhulme Trust (LT), Particle Physics and Astronomy Research Council (Great Britain) (PPARC) |
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