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Observations of Magnetic Field Reconnection at the Base of EFR Surges 黒河宏企、 Liu Yu 、清原淳子（京大理 )

天文学会２００５年春季年会. Observations of Magnetic Field Reconnection at the Base of EFR Surges 黒河宏企、 Liu Yu 、清原淳子（京大理 ). Ⅰ. Brief Review of Ｈ α Surge Study. Ｈ αsurge: Chromospheric explosion: 噴出型紅炎. Roy(1973). Surge 発生領域. Satellite Polarity 減少. Surge. magnetic neutral point.

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Observations of Magnetic Field Reconnection at the Base of EFR Surges 黒河宏企、 Liu Yu 、清原淳子（京大理 )

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  1. 天文学会２００５年春季年会 Observations of Magnetic Field Reconnection at the Base of EFR Surges 黒河宏企、Liu Yu、清原淳子（京大理)

  2. Ⅰ. Brief Review of Ｈα Surge Study Ｈαsurge: Chromospheric explosion: 噴出型紅炎 Roy(1973)

  3. Surge発生領域 Satellite Polarity 減少 Surge magnetic neutral point (1) Satellite Polarity: Rust(1968):IAU symp. Vol.35, 77

  4. Other Regions(A, B, C, E) Surge 発生領域 D 磁場Flux減少 (2) Evoluving magnetic feature: Roy(1973): S.P.28, 95 2046UT 1412UT 1913UT Hα+1.4Å Hα-2Å Hα+1.4Å Hα-0.6Å Hα-0.9Å Hα Hα+0.6Å

  5. (3) Emerging Flux Region:EFR surge 浮上磁場領域の初期にsurge活動 Kurokawa(1988): Kurokawa and Kawai(1993):IAU Colloq. 6/2 83/6/1 BBSO BBSO 0050UT 2015UT 2047UT Hida Hα+0.8 Continuum Hida Hida 0053UT HIda 0221UT 0605UT

  6. Hα-1.0Å 1855UT 2254UT 1957UT 2059UT 2025UT 2115UT 1911UT 2122UT 2241UT Surge is the first manifestation of the birth of an active region Kurokawa(2005) Hα center Hα center Hα center CaⅠline wing intensity Magnetic field Magnetic field Magnetic field CaⅠline wing intensity 2240UT Big Bear Solar Observatory

  7. 浮上磁場（EFR）がSurge発生に重要！ EFR-surgeの特徴(kurokawa and Kawai 1993) （１）EFR初期に出現　（２）異なる磁極との境界に出現　 （３）複数の微細サージ（elementary surge）の集合 （４）下降プラズマは上昇と同じ磁力線に沿うものと別の磁力線に沿うものとに分かれる。 Hαblue-wingでは１本のジェット状に見えるが、Hαred-wingでは足が２本見える。

  8. Ｈαサージの磁気リコネクションモデル の模式図　　　（観測を良く説明する） 既存磁場 新浮上 磁場: EFR 磁気リコネクション （エネルギー解放） Hαsurge噴出 (Kurokawa and Kawai 1993)

  9. Soft X-ray Jet の発見(Yohkoh SXT) shibata et al. (1992) Shimojo et al. (1996) 数値シミュレーション Yokoyama and Shibata(1996) EFRに伴う磁気リコネクションで説明

  10. Detailed Comparison between Hida Hα and Huairou Magnetogram: (Sano et al. 2005) Huairou loggitudinal mag. Hida Hα- 0.8Å 05:37 UT (Nov.4, 1991) 05:20 UT(Nov.4, 1991) Surgeの根本で磁場はどう変化しているか？

  11. measured box Detailed comparison between Hida Hα and Huairou Magnetogram

  12. Flux changes of the isolated magnetic polarity near the footpoint of the Hα surge

  13. (2) Correction of errors included in the raw data (1) (3) Magnetic flux change: increase

  14. Surgeの根本で磁場は増加している！ EFR is essential for surge! Summary of Flux Changes in the Surge Regions

  15. Ⅱ. Solar B による観測 （１）High resolution observation ofthe footpoints of Hαsurges magnetic field Hα-0.7 Hα+0.7 With Lockheed SOUP and Swedish 50cm telescope at La Palma TRACE171 Brooks, Kurokawa and Burger(2005)

  16. Evidence of reconnection Hot coronal plasma observed in FeⅨ171Å at the base of an Hαsurge Hα-0.7Å images TRACE171Å images TRACE171Åcontour on the Hα-0.7Åat 14:07 UT TRACE171Åcontour on the magnetogram at 14:08UT

  17. TRACE171compact loop (reconnected loop) Hαsurge Schematic model of the surge of 30 May, 1998 Before reconnection EFR After reconnection

  18. p f Surgeの前後でのベクトル磁場の変化の観測 Changes of transverse field at the surge base Liu and Kurokawa(2004:Ap.J. 610, 1136) 30Aug,2001

  19. Formation of two types of transverse magnetic field • (1)Transient appearance of transverse • magnetic field during the surge activity (Liu and Kurokawa 2004) (2) Formation of transverse field after the surge activity? surge after surge

  20. Ⅲ. まとめ Solar Bによる Ｈαサージの磁気リコネクションモデルの検証 （１）Hαdark surge, Hαbright point, XRT-hot reconnected loop, -evaporation jet と光球微細磁場構造との時間的空間的関係を詳細に調べる （２）光球ベクトル磁場の時間変化を観測して 　　　Ｈαサージの前後での transeverse 磁場の変化を求める

  21. 太陽全面の高分解Ｈα像および ベクトル磁場図 EFRの初期を発見して観測 （３）Surgeを発生するＥＦＲと 　　　しないＥＦＲの違いはなにか？ 地上観測との連携が重要！ SMART(Solar Magnetic Activity Research Telescope) at Hida Observatory SMART DST

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