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Ion-scale turbulence in the inner heliosphere: radial dependence

Comişel, H. and Motschmann, U. and Büchner, J. and Narita, Y. and Nariyuki, Y. (2015) Ion-scale turbulence in the inner heliosphere: radial dependence. The Astrophysical Journal, 812 (2), p. 175. American Astronomical Society. DOI: doi:10.1088/0004-637X/812/2/175 ISSN 0004-637X

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Abstract

The evolution of the ion-scale plasma turbulence in the inner heliosphere is studied by associating the plasma parameters for hybrid-code turbulence simulations to the radial distance from the Sun via a Solar wind model based mapping procedure. Using a mapping based on a one-dimensional solar wind expansion model, the resulting ion-kinetic scale turbulence is related to the solar wind distance from the Sun. For this purpose the mapping is carried out for various values of ion beta that correspond to the heliocentric distance. It is shown that the relevant normal modes such as ion cyclotron and ion Bernstein modes will occur first at radial distances of about 0.2–0.3 AU, i.e., near the Mercury orbit. This finding can be used as a reference, a prediction to guide the in situ measurements to be performed by the upcoming Solar Orbiter and Solar Probe Plus missions. Furthermore, a radial dependence of the wave-vector anisotropy was obtained. For astrophysical objects this means that the spatial scales of filamentary structures in interstellar media or astrophysical jets can be predicted for photometric observations.

Item URL in elib:https://elib.dlr.de/100828/
Document Type:Article
Title:Ion-scale turbulence in the inner heliosphere: radial dependence
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Comişel, H.h.comisel (at) tu-braunschweig.deUNSPECIFIED
Motschmann, U.uwe.motschmann (at) dlr.deUNSPECIFIED
Büchner, J.buechner (at) mps.mpg.deUNSPECIFIED
Narita, Y.yasuhito.narita (at) oeaw.ac.atUNSPECIFIED
Nariyuki, Y.University of Toyama, Faculty of Human Development, 3190, Gofuku, Toyama, 930-8555, JapanUNSPECIFIED
Date:2015
Journal or Publication Title:The Astrophysical Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:812
DOI :doi:10.1088/0004-637X/812/2/175
Page Range:p. 175
Publisher:American Astronomical Society
ISSN:0004-637X
Status:Published
Keywords:plasmas, solar wind, turbulence, waves
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: Kührt, Dr.rer.nat. Ekkehard
Deposited On:06 Jan 2016 16:47
Last Modified:06 Sep 2019 15:30

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