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太陽フレア・ CME と宇宙天気 Solar Flares/CMEs and Space Weather 浅井歩 (Ayumi Asai) 1 、 下条圭美 1 、 石井貴子 2 、黒河宏企 2 、柴田一成 2 1: 国立天文台野辺山、 2: 京大理.

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Presentation on theme: "太陽フレア・ CME と宇宙天気 Solar Flares/CMEs and Space Weather 浅井歩 (Ayumi Asai) 1 、 下条圭美 1 、 石井貴子 2 、黒河宏企 2 、柴田一成 2 1: 国立天文台野辺山、 2: 京大理."— Presentation transcript:

1 太陽フレア・ CME と宇宙天気 Solar Flares/CMEs and Space Weather 浅井歩 (Ayumi Asai) 1 、 下条圭美 1 、 石井貴子 2 、黒河宏企 2 、柴田一成 2 1: 国立天文台野辺山、 2: 京大理

2 発生源としての太陽 The Sun as a Source Active phenomena on the solar surface (flares/CMEs) work as sources of the outbreaks. The understandings of the generation mechanisms are important. フレア・ CME 伝播 影響 擾乱

3 太陽フレア・ CME Solar Flare / CME All of these are physically the same phenomena. They are different from each other on one point that they are observed in different aspects.

4 磁気リコネクション Magnetic Reconnection well explains observed phenomena phenomenologically succeeded (Carmichael 1964; Sturrock 1966; Hirayama 1974; Kopp-Pneuman 1976) still needs to be checked quantitatively and qualitatively

5 プラズモイド噴出 Plasmoid Ejections The combination of SXR ejections and HXR bursts has been observed (e.g. Ohyama & Shibata 1997) Plasmoids play an important role in the reconnection process

6 プラズモイド噴出 Plasmoid Ejections Multiple plasmoid ejections and correlation with HXR emissions (Takasaki et al. 2005?) ② ⑦ ⑥ ④ ③ ① ①②③④⑥⑦

7 pre-eruption During eruption photosphere Initial amount=N Definition of  プロミネンス噴出 Prominence Eruptions gravity force and magnetic pressure work effectively for prominence ejections (Morimoto & Kurokawa 2003a, b)

8 CMEs Strong correlation between CMEs and prominences/plasmoids Similar relation between CME and SXR emission Zhang et al. (2001)

9 CMEs MHD simulation  direct comparison with observation (Shiota et al. 2005, Chen & Shibata 2001)

10 フレアリボン Flare Ribbons H  flare ribbons The evolution of flare ribbons implies successive reconnection  also implies of the strength of the energy release (e.g. Asai et al. 2004)

11 リコネクションレートと ポインティングフラックス An HXR burst occurred on the slit (05:19 UT).

12 粒子加速 Particle Acceleration Site? Amount?  Mechanism? Masuda et al. (1994) Aschwanden et al. (1996)

13 まとめ Summary Active phenomena on the solar surface (flares/CMEs) work as sources of the outbreaks. The understandings of the generation mechanisms are important.

14 活動領域の成長 Evolution of Active Region 2003/10/242003/10/252003/10/262003/10/272003/10/282003/10/29 2003/10/30 2003/10/312003/11/01 2003/11/02 2003/11/03 NOAA10488 NOAA10486 2003/10/28 NOAA10488 NOAA10486


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