Open Access Fonds
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Verlag der Österreichischen Akademie der Wissenschaften Austrian Academy of Sciences Press
A-1011 Wien, Dr. Ignaz Seipel-Platz 2
Tel. +43-1-515 81/DW 3420, Fax +43-1-515 81/DW 3400 https://verlag.oeaw.ac.at, e-mail: verlag@oeaw.ac.at |
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DATUM, UNTERSCHRIFT / DATE, SIGNATURE
BANK AUSTRIA CREDITANSTALT, WIEN (IBAN AT04 1100 0006 2280 0100, BIC BKAUATWW), DEUTSCHE BANK MÜNCHEN (IBAN DE16 7007 0024 0238 8270 00, BIC DEUTDEDBMUC)
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Open Access Fonds Open Access Fonds
2021
Yasuhito Narita,
Owen Wyn Roberts,
Zoltán Vörös,
Masahiro Hoshino
doi:10.3389/fphy.2020.00166
Abstract: Fluctuation properties of the kinetic Alfvén mode, such as polarization of the wave electric and magnetic field around the mean magnetic field, parallel fluctuation to the mean field, ratios of the electric to magnetic field, and density fluctuations are analytically estimated by constructing the dielectric tensor of plasma based on the linear Vlasov theory. The dielectric tensor contains various fluid-picture processes in the lowest order, including polarization drift, Hall current, and diamagnetic current. Major discoveries from the dielectric tensor method in the kinetic Alfvén mode study are (1) identification of the mechanism of the field rotation sense reversal as a result of competition between the Hall and diamagnetic currents, (2) behavior of the parallel magnetic field fluctuation (in the compressive sense). The analytic expression of transport ratios serves as a diagnostic tool to study and identify the kinetic Alfvén mode in space plasma observations in the inner heliospheric domain. Keywords: kinetic Alfvén mode; dielectric tensor; fluctuation properties; energy spectra; plasma turbulence Published Online: 2021/09/15 08:02:55 Object Identifier: 0xc1aa5576 0x003ccebc Rights: .
Der Open Access (OA) Fonds der ÖAW fördert, von der Bibliothek der ÖAW administriert, Open Access Publikationen von ÖAW-Angehörigen. Beim OA Fonds können Förderungen für Article Processing Costs (APCs) in Zeitschriften und für Publikation von Monographien, bzw. Beiträgen in Sammelwerken beantragt werden. |
Verlag der Österreichischen Akademie der Wissenschaften Austrian Academy of Sciences Press
A-1011 Wien, Dr. Ignaz Seipel-Platz 2
Tel. +43-1-515 81/DW 3420, Fax +43-1-515 81/DW 3400 https://verlag.oeaw.ac.at, e-mail: verlag@oeaw.ac.at |