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Parametric decay of oblique Alfvén waves in two-dimensional hybrid simulations

Verscharen, D. and Marsch, E. and Motschmann, U. and Müller, J. (2012) Parametric decay of oblique Alfvén waves in two-dimensional hybrid simulations. Physical Review E, 86 (2), 027401. American Physical Society. DOI: 10.1103/PhysRevE.86.027401.

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Abstract

Certain types of plasma waves are known to become parametrically unstable under specific plasma conditions, in which the pump wave will decay into several daughter waves with different wavenumbers and frequencies. In the past, the related plasma instabilities have been treated analytically for various parameter regimes and by use of various numerical methods, yet the oblique propagation with respect to the background magnetic field has rarely been dealt with in two dimensions, mainly because of the high computational demand. Here we present a hybrid-simulation study of the parametric decay of a moderately oblique Alfv´en wave having elliptical polarization. It is found that such a compressive wave can decay into waves with higher and lower wavenumbers than the pump.

Document Type:Article
Title:Parametric decay of oblique Alfvén waves in two-dimensional hybrid simulations
Authors:
AuthorsInstitution or Email of Authors
Verscharen, D.Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau; Institut für Theoretische Physik, Technische Universität Braunschweig
Marsch, E.Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau; Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität Kiel
Motschmann, U.Institut für Theoretische Physik, Technische Universität Braunschweig; uwe.motschmann@dlr.de
Müller, J.Institut für Theoretische Physik, Technische Universität Braunschweig
Date:2012
Journal or Publication Title:Physical Review E
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:86
DOI:10.1103/PhysRevE.86.027401
Page Range:027401
Publisher:American Physical Society
Status:Published
Keywords:Alfven waves
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignement
DLR - Research theme (Project):R -- no assignement
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Deposited By: Laura-Maria Brumm
Deposited On:21 Nov 2012 10:14
Last Modified:04 Apr 2013 16:40

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