JpGU-AGU Joint Meeting 2020

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[E] ポスター発表

セッション記号 P (宇宙惑星科学) » P-EM 太陽地球系科学・宇宙電磁気学・宇宙環境

[P-EM12] 大気圏ー電離圏結合

コンビーナ:Huixin Liu(九州大学理学研究院地球惑星科学専攻 九州大学宙空環境研究センター)、大塚 雄一(名古屋大学宇宙地球環境研究所)、Yue Deng(University of Texas at Arlington)、Loren Chang(Institute of Space Science, National Central University)

[PEM12-P07] Monte Carlo simulation of solar EUV scattering by oxygen ions

*中野 慎也1、穂積 裕太2、齊藤 昭則3 (1.情報・システム研究機構　統計数理研究所、2.電気通信大学、3.京都大学大学院理学研究科地球物理学教室)

キーワード：酸素イオン、極端紫外光

It has been reported that the Extreme ultraviolet (EUV) at 83.4 nm, which is scattered by oxygen ions (O+), was observed by an imager of ISS-IMAP in the umbra of the Earth. However, the single scattering of solar radiation in the upper atmosphere would not well explain the observation. This study modeled the EUV scattering by a Monte Carlo method. This method allows us to consider multiple scattering. The result suggests the EUV at 83.4 nm is observable even in the umbra. However, the feature of the observation by ISS-IMAP is not necessarily reproduced. Possible reasons of the discrepancy between the simulation and the observation will be discussed.