Observations of Waves and Pitch Angle Distributions of Electrons at Dipolarization sites
學年 109
學期 1
發表日期 2020-11-16
作品名稱 Observations of Waves and Pitch Angle Distributions of Electrons at Dipolarization sites
作品名稱（其他語言）
著者 Wang, K.; F. Otsuka; T. Hada; C. H. Lin
作品所屬單位
出版者
會議名稱 9th VERSIM Workshop (VERSIM 2020)
會議地點 Online(Kyoto, Japan)
摘要 Dipolarization of geomagnetic fields had been found to occur at Earth’s tailside during geomagnetic activities associated with decreasing in AL index and substorms [1]. Recently, the dipolarization phenomena were also reported to be observed in the inner magnetosphere [2]. Therefore, it would be essential to investigate properties of waves and particles associated with the dipolarization events. Based on our preliminary analysis from observations of THEMIS mission, both whistler-mode waves and variations in pitch angle distributions of electrons were found at a dipolarization site near the magnetic equator around 10 RE (Earth radii), and changes in energies and pitch angles of electrons according to observed wave parameters were simulated [3]. We found that the observed changes in pitch angles of electrons may ralate to their interaction with the observed waves. To substantiate the findings mentioned above, in this study, we aim to analyze observed wave parameters in more detail in terms of frequency ranges as well as amplitudes, wave angles, and polarities versus frequencies, to improve the input wave parameters of the simulation for their effects on electrons. Changes in the background magnetic field would also be taken into account. We anticipate the results will be beneficial to understand the properties of waves and electrons of dipolarization sites in the transition region from inner plasma sheet to the inner magnetosphere.
關鍵字
語言 en
收錄於
會議性質 國際
校內研討會地點 無
研討會時間 20201116~20201120
通訊作者
國別 JPN
公開徵稿
出版型式
出處 論文編號 P2-33, 9th VERSIM Workshop (VERSIM 2020)
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/119809 )

SDGS 氣候行動