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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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
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:	Date Event March 2003 Published
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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