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Wavevector anisotropy of plasma turbulence at ion kinetic scales: solar wind observations and hybrid simulations

Comişel, H. and Narita, Y. and Motschmann, U. (2014) Wavevector anisotropy of plasma turbulence at ion kinetic scales: solar wind observations and hybrid simulations. Nonlinear Processes in Geophysics, 21, pp. 1075-1083. Copernicus Publications. DOI: 10.5194/npg-21-1075-2014 ISSN 1023-5809

Full text not available from this repository.

Official URL: http://www.nonlin-processes-geophys.net/21/1075/2014/

Abstract

Wavevector anisotropy of ion-scale plasma turbulence is studied at various values of ion beta. Two complementary methods are used. One is multi-point measurements of magnetic field in the near-Earth solar wind as provided by the Cluster spacecraft mission, and the other is hybrid numerical simulation of two-dimensional plasma turbulence. Both methods demonstrate that the wavevector anisotropy is reduced with increasing values of ion beta. Furthermore, the numerical simulation study shows the existence of a scaling law between ion beta and the wavevector anisotropy of the fluctuating magnetic field that is controlled by the thermal or hybrid particle-in-cell simulation noise. Likewise, there is weak evidence that the power-law scaling can be extended to the turbulent fluctuating cascade. This fact can be used to construct a diagnostic tool to determine or to constrain ion beta using multi-point magnetic field measurements in space.

Item URL in elib:https://elib.dlr.de/97052/
Document Type:Article
Title:Wavevector anisotropy of plasma turbulence at ion kinetic scales: solar wind observations and hybrid simulations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Comişel, H.h.comisel (at) tu-braunschweig.deUNSPECIFIED
Narita, Y.Institut für Geophysik und extraterrestrische Physik, Technische Universität Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, GermanyUNSPECIFIED
Motschmann, U.uwe.motschmann (at) dlr.deUNSPECIFIED
Date:11 November 2014
Journal or Publication Title:Nonlinear Processes in Geophysics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:21
DOI :10.5194/npg-21-1075-2014
Page Range:pp. 1075-1083
Publisher:Copernicus Publications
ISSN:1023-5809
Status:Published
Keywords:Wavevector anisotropy, plasma turbulence, solar wind observations, hybrid simulations
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben Exploration des Sonnensystems
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Deposited By: Bründl, Tara-Marie
Deposited On:04 Sep 2015 08:39
Last Modified:08 Mar 2018 18:11

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