Nonlinear evolution of solar wind Alfven waves: An empirical model of the ion kinetic effect

Yasuhiro Nariyuki

Presentation information

[EJ] Oral

P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM20] [EJ] Heliosphere and Interplanetary Space

Wed. May 24, 2017 1:45 PM - 3:15 PM A02 (Tokyo Bay Makuhari Hall)

convener:Ken Tsubouchi(Tokyo Institute of Technology), Masaki N Nishino(Institute for Space-Earth Environmental Research, Nagoya University), Yasuhiro Nariyuki(Faculty of Human Development, University of Toyama), Chairperson:Masaki Nishino(Institute for Space-Earth Environmental Research, Nagoya University), Chairperson:Daikou Shiota(Institute for Space-Earth Environmental Research, Nagoya University)

1:45 PM - 2:00 PM

[PEM20-07] Nonlinear evolution of solar wind Alfven waves: An empirical model of the ion kinetic effect

*Yasuhiro Nariyuki¹ (1.Faculty of Human Development, University of Toyama)

Keywords:solar wind, Alfven waves, Thermodynamic property of solar wind plasma

It is well know that solar wind plasma is usually at the thermally non-equilibrium state. Kinetic effects due to collisionless damping also cause the deviation from the fluid description, in which the local equilibrium states are assumed. In this presentation, we discuss an empirical model of the thermodynamic property of the solar wind plasma with non-constant heat capacity of the semi-ideal gas. Analytical and numerical models (the derivative nonlinear Schrodinger equation and the triple-degenerated derivative nonlinear Schrodinger equation) including the ion kinetic effect are used to evaluate the empirical relationship between the plasma density and the magnetic pressure.