Japan Geoscience Union Meeting 2018

Presentation information

[EE] Evening Poster

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

[P-EM16] Dynamics of Earth's Inner Magnetosphere and Initial Results from Arase

Tue. May 22, 2018 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Danny Summers(Memorial University of Newfoundland), Yoshizumi Miyoshi(Institute for Space-Earth Environmental Research, Nagoya University), Keisuke Hosokawa(電気通信大学大学院情報理工学研究科, 共同), Yusuke Ebihara(Research Institute for Sustainable Humanosphere, Kyoto University)

[PEM16-P19] Relativistic effect on dispersionless injection associated with substorms

*Tzu-Fang Chang1,2, Chio-Zong Cheng2, Chih-Yu Chiang2, Sunny Wing-Yee Tam2, Yoshizumi Miyoshi1, Tomoaki Hori1, Takefumi Mitani3, Takeshi Takashima3, Ayako Matsuoka3, Mariko Teramoto1 (1.Institute for Space-Earth Environmental Research, Nagoya University, Japan, 2.Institute of Space and Plasma Sciences, National Cheng Kung University, Tainan, Taiwan, 3.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Japan)

Keywords:particle injection, dispersionless, substorm, relativistic effect

Substorm dispersionless energetic particle injection to inner magnetosphere has been investigated on the basis of a classical electromagnetic pulse model [Zaharia et al., 2000]. In order to consider the effect of disturbed event on particle transport, relativistic effect is considered in our study to improve non-relativistic calculation results to get better agreement with satellite observation. We combine the ground-based observations and in situ magnetic field and particle data observed from satellites in the inner magnetosphere to investigate the transport of energetic particles associated with the substorms. In this study, the particle drift motion, the adiabatic invariant and particle magnetic moment differ from the previous non-relativistic particle motion model. We simulate the evolution of energetic particle injections during substorms and discuss the difference among non-relativistic, relativistic, and observational results.