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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. 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

Subjects:

Q Science > QB Astronomy

Divisions:

Faculty of 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

Identification Number:

10.1051/0004-6361:20030062

Status:

Peer Reviewed

Access rights to Published version:

Open Access

Funder:

Leverhulme Trust (LT), Particle Physics and Astronomy Research Council (Great Britain) (PPARC)

References:

Arber, T. D., Longbottom, A.W., Gerrard, C. L.,&Milne, A. M. 2001,
J. Comput. Phys., 171, 151
Botha, G. J. J., Arber, T. D., Nakariakov, V. M., & Keenan, F. P. 2000,
A&A, 363, 1186
Heyvaerts, J., & Priest, E. R. 1983, A&A, 117, 220
Hood, A. W., Brooks, S. J., & Wright, A. N. 2002a, Proc. Roy. Soc.
Lond. A, 458, 2307
Hood, A. W., Brooks, S. J., & Wright, A. N. 2002b, Proc. Roy. Soc.
Lond. A, accepted
Malara, F., Primavera, L., & Veltri, P. 1996, ApJ, 459, 347
Nakariakov, V. M., Ofman, L., DeLuca, E. E., Roberts, B., & Davila,
J. M. 1999, Science, 285, 862
Nakariakov, V.M., Roberts, B.,& Murawski, K. 1997, Sol. Phys., 175,
93
Nakariakov, V.M., Roberts, B., & Murawski, K. 1998, A&A, 332, 795
Ofman, L., & Aschwanden, M. J. 2002, ApJ, 576, L153
Parker, E. N. 1991, ApJ, 376, 355
Roussev, I., Galsgaard, K., Erdelyi, R., & Doyle, J. G. 2001, A&A,
370, 298
Tsiklauri, D., Arber, T. D., & Nakariakov, V. M. 2001, A&A, 379,
1098
Tsiklauri, D., Nakariakov, V.M., & Arber, T. D. 2002, A&A, 395, 285
Tsiklauri, D., & Nakariakov, V. M. 2002, A&A, 393, 321