日本地球惑星科学連合2014年大会

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インターナショナルセッション(口頭発表)

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-EM08_2AM1] Space Weather and Space Climate

2014年5月2日(金) 09:00 〜 10:45 411 (4F)

コンビーナ:*片岡 龍峰(国立極地研究所)、海老原 祐輔(京都大学生存圏研究所)、草野 完也(名古屋大学太陽地球環境研究所)、清水 敏文(宇宙航空研究開発機構宇宙科学研究所)、三好 由純(名古屋大学太陽地球環境研究所)、浅井 歩(京都大学宇宙総合学研究ユニット)、佐藤 達彦(日本原子力研究開発機構)、陣 英克(情報通信研究機構)、伊藤 公紀(横浜国立大学大学院工学研究院)、宮原 ひろ子(武蔵野美術大学造形学部)、座長:清水 敏文(宇宙航空研究開発機構宇宙科学研究所)

10:00 〜 10:15

[PEM08-12] 太陽フレア双方向インフローの撮像分光立体観測

*松井 悠起1横山 央明1 (1.東京大学地球惑星科学専攻)

キーワード:solar flare, reconnection

The standard model of solar flares based on the magnetic reconnection includes bi-directional inflow toward the reconnection point. Corresponding to the bi-directional inflow, high temperature loops like a cusp shape are formed due to the magnetic reconnection. By combination of imaging, spectroscopic and stereoscopic observations, we succeeded in capture the three-dimensional structure of a bi-directional reconnection inflow of a solar flare.We analyzed a C-class flare that occurred on 2012 September 11 beyond the solar limb. The bi-directional inflow was found in the images of coronal temperature filter taken by AIA onboard SDO. Hinode EUV Imaging Spectrometer (EIS) also observed this flare and provide the Doppler velocity of the bi-directional inflows. At the same time, cusp loops were observed with the raster scans of FeIV emission line (over 10 MK) at the region surrounded by the bi-directional inflow. This is clear evidence that 1MK loops are heated over 10MK by the magnetic reconnection. STEREO A/SECCHI was observing this flow from a different line of site. Inflowing angle in STEREO A/SECCHI images is consistent with the angle speculated by apparent velocity of SDO/AIA and line of sight velocity of Hinode/EIS. By combining these data sets, we constructed a self-consistent three-dimensional picture of the flows.