Japan Geoscience Union Meeting 2014

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Oral

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

[P-EM34_1AM2] Plasma Astrophysics: interstellar/interplanetary space, magnetosphere

Thu. May 1, 2014 11:00 AM - 12:45 PM 503 (5F)

Convener:*Shuichi Matsukiyo(Department of Earth System Science and Technology, Kyushu University), Yasuhiro Nariyuki(Faculty of Human Development, University of Toyama), Chair:Ken Tsubouchi(Tokyo Institute of Technology)

12:15 PM - 12:30 PM

[PEM34-03] Solar wind plasma entry into the wake behind an unmagnetized obstacle

*Tomoko NAKAGAWA1 (1.Information and Communication Engineering, Tohoku Institute of Technology)

Keywords:wake, solar wind, surface charging, electron thermal speed, Debye length, particle-in-cell simulation

Plasma entry into a wake downstream of a non-magnetized obstacle in the supersonic flow of the solar wind is studied by using a two-dimensional, electromagnetic particle-in-cell simulation. Importance of negative charging of the downstream-side surface of the obstacle is examined by comparing the simulation results of 3 different ratios 8, 16, 32 of the obstacle size to the Debye length.