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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/117674


    Title: Study on Interactions Between Electrons and Observed Whistler-mode Waves at Dipolarization Sites in the Inner Plasma Sheet
    Authors: Wang Kaiti;Fumiko Otsuka;Tohru Hada;Ching-Huei Lin
    Keywords: dipolarization;electrons;whisler-mode waves
    Date: 2019-07-28
    Issue Date: 2019-10-24 12:13:11 (UTC+8)
    Abstract: Dipolarization of geomagnetic fields had been found to occur at tailside during geomagnetic activities associated with decreasing in AL index and substorms. Based on data analysis from electric field instrument and search coil magnetometer onboard of THEMIS mission, whistler-mode waves are found at dipolarization sites near the magnetic equator around 10 RE (Earth radii) in the inner plasma sheet. Meanwhile, the electron fluxes and their pitch angle distributions are also found to vary during dipolarization period. Therefore, we study the interaction between electrons and these waves from the perspective of test particle simulation. The observed wave frequencies, amplitudes, and wave angles as well as the electron energies are adopted to implement the simulation. Observations of parameters of the waves and electrons, as well as the preliminary simulation results of changes in energies and pitch angles of electrons at different energies will be presented. We anticipate the results will be beneficial to understand the role these observed whistler-mode waves play during dipolarization periods at tailside.
    Relation: AOGS 2019 Program Abstracts
    Appears in Collections:[航空太空工程學系暨研究所] 會議論文

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