1. AR NOAA 10798 & 10808 (August-September, 2005) Ayumi Asai Nobeyama Solar Radio Observatory, NAOJ December 11, 2005 CAWSES WS @Stanford

2. Nobeyama Solar Radio Observatory Nobeyama Radio Polarimeter Nobeyama Radioheliograph

4. SOHO/MDI Face-on movie Evolution NOAA 10798 emergence!

5. GOES light curve (NOAA10798) 3 M-class flares occurred

6. Coronal Features of NOAA 10798 SOHO/EIT (195A) NOAA 10798 CH 10797 New AR appears in a small coronal hole

7. Coronal Features of NOAA 10798 SOHO/EIT (195A) CH NOAA 10798 Anemone structure!

8. Anemone Structure Anemone structure – ARs which appear in CHs (not so active) Source of gigantic jets

9. Flare1: 2005/08/22 00:44UT near the west limb (S11 W62) M-class flares LDE ejection  Halo-CME SOHO/EIT (195) movie

10. CMEs of NOAA 10798 Halo-CMEs NOAA 10798 is located near the southwest limb 08/22 (M2.6) 01 h 08/22 (M5.6) 17 h wide CME  magnetic configuration (CH)? SOHO/LASCO C3

11. Summary of NOAA 10798 Characteristics of the AR NOAA10798 which is the AR of NOAA 10808 in the previous rotation rapidly evolved (especially in the second half of the path) showed anemone-type structure (appeared in a small CH) M-class flare occurred near the southwest limb Nevertheless, generated a halo-type CME  wide angle CME  magnetic configuration? (CH?)

12. Backside CME! Backside Halo-CME (AR is evolving!) 2005-Aug-31 LASCO/C2 SOHO/EIT (195) Short Break

13. SOHO/MDI Face-on movie Evolution NOAA 10808

14. Evolution of AR GOES/SXI

15. GOES light curve (NOAA10808) 10 X-class, 20 M-class flares occurred

16. Phase 1: poor observation 2005/09/07 17:17UT (X17.0) 2005/09/08 20:52UT (X5.4) Huge flares (X17, X5.4) No EIT, No MDI, No LASCO TRACE movie shows ejection

17. Phase 2: geo-effective flare 2005/09/09 09:42UT (X3.6) 2005/09/09 19:13UT (X6.2)

18. CMEs of 2005-Sep-09 Flare AR was located near the limb Halo-CMEs SOHO/LASCO C3SOHO/LASCO C2

19. Phase 3: LDE flares 2005/09/10 21:30UT (X2.1) 2005/09/11 12:44UT (M3.0)

20. Site of Flares (LDEs) SOHO/MDI TRACE (171) 100 arcsec

21. Site of Flares (LDEs) SOHO/MDI TRACE (171) 100 arcsec

22. Phase 4: more LDE flares 2005/09/13 19:19UT (X1.5) 2005/09/13 23:30UT (X1.7) near disc center

23. Site of Flares 100 arcsec

24. Phase 4: Impulsive flares 2005/09/13 19:19UT (X1.5) 2005/09/13 23:30UT (X1.7) on the  -umbra compact region  No-CMEs!

25. Summary of NOAA 10808 showed complex structure (  -type sunspots) rapidly decay (in the second half of the path) flare-productive AR (10 X-class, 20 M-class flares) both of LDE flares and impulsive flares occurred sites are different Halo-CMEs were associated with LDEs (even X- class flares were not necessarily associated with CMEs) wide angle ejections/CMEs  even limb flares generated Halo-CMEs

26. Questions Why are Halo-type CMEs generated even from near-limb flares?  Ejections are easily expanded? Homologous flares, but some of them are geo-effective (and others are no geo- effective)? Are big flares associated with big magnetic storms?

27. Flares of NOAA 10798 Characteristics AR is located near the southwest limb But, generated Halo-CMEs  ejection が広がりや すい磁場構造 !?

28. Confined Flares