Tsiklauri, D., Nakariakov, 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

Preview

PDF WRAP_Nakariakov_phase_mixing.pdf - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader Download (314Kb)

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
Date:	March 2003
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
URI:	http://wrap.warwick.ac.uk/id/eprint/3806

Request changes to a record

Actions (login required)

View Item