7–9 Mar 2019
Faculty of Science, University of Toyama
Asia/Tokyo timezone

What regulates temperature anisotropy in the expanding solar wind plasmas?

9 Mar 2019, 11:30
40m
A238 (Faculty of Science, University of Toyama)

A238

Faculty of Science, University of Toyama

3190 Gofuku, Toyama 930-8555, Japan

Speaker

Dr Jungjoon Seough (Korera Astronomy and Space Science Institute)

Description

The solar wind plasmas possess temperature anisotropies that cannot be described by the prediction of double-adiabatic theory. It is commonly accepted that the pervasive features of temperature anisotropy observed in the solar wind are thought to result from a combination of physical mechanisms including the expansion, turbulent heating, kinetic instabilities, and Coulomb collisions. In this study, we develop an expanding box model of velocity moment-based quasilinear kinetic analysis that includes the above-mentioned physical ingredients. By incorporating the local kinetic physics into the large scale expansion and/or Parker spiral magnetic field in the present model, we describe how the solar wind temperature anisotropy is formed and evolves in interplanetary space.

Primary authors

Dr Jungjoon Seough (Korera Astronomy and Space Science Institute) Prof. Peter Yoon (University of Maryland ) Yasuhiro Nariyuki

Presentation materials

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