1. RESISTIVE EMERGENCE OF UNDULATORY FLUX TUBES
E. Pariat, G. Aulanier, and B. Schmieder
Laboratoire d’Etudes Spatiales et d’Instrumentation en Astrophysique ( LESIA), Observatoire de Meudon,
and
M. K. Georgoulis, D. M. Rust, and P. N. Bernasconi
Applied Physics Laboratory, Johns Hopkins University
The Astrophysical Journal, 614:1099–1112, 2004 October 20

2. Flare Genesis Experiment
Balloon-borne
Altitude 37km ( Middle Stratosphere )
Primary Mirror : 80cm, Ultra-low expansion
Secondary Mirror : Single-crystal Silicon
Graphite-epoxy telescope tube
Achieved Image quality 0.5”

3. Flare Genesis Experiment
FOV : 92” x 92”
Liquid-crystal modulator, a 0.16Åtunable etalon, 1.25 order-isolation filters
Vector Megnetogram CaI 6122, +/- 0.08Å
Dopplergram CaI 6122
Hα－0.8Å　Filtergram

8. Georgoulis et al. (2002)

9. Georgoulis et al. (2002)
Area Magnetic Proper Motions Downflows A ˚
Neutral (km s1) (%)(kms1) BPs (%)
Lines(%)
(<0.2, 0.4) (SG boundary) 86 (-0.4, -0.1)
(0.4, >0.8) (cell interior/MDFs)
(<0.2, 0.4) (-0.3, -0.1)
(<0.2, 0.8) (-0.5)

10. Georgoulis et al. (2002)

11. Pariat et al. (2004) FGE data What is the magnetic topology of EBs?
Can EBs be sympathetically linked to one another, and why?
What is their relation with the flux emergence on the larger scale of the active region?

12. Pariat et al. (2004)

13. FROM PHOTOSPHERIC VECTOR MAGNETIC FIELDS TO CORONAL FIELDS
Constant α　Force Free Field Extrapolation　to Corona
Boundary Condition ( Bz(x,y,0))
　　　　　FGE Vector magnetogram
　　　　　Wider field IVM(Mickey)
α　Free Parameter

14. FROM PHOTOSPHERIC VECTOR MAGNETIC FIELDS TO CORONAL FIELDS
Estimation of α
B(horizontal) Extrapolated vs Observed
Morphology of TRACE Loops
αｆ　＝　2.2ｘ10－2

15. FROM PHOTOSPHERIC VECTOR MAGNETIC FIELDS TO CORONAL FIELDS

16. FROM PHOTOSPHERIC VECTOR MAGNETIC FIELDS TO CORONAL FIELDS

17. ELLERMAN BOMBS AND MAGNETIC TOPOLOGY
Bald Patch (BP)
Bz=0 and B・∇Bz>0
Spatial Correlation
・EB vs BP
・EB vs Separatorix Foot Point

18. EB vs BP

19. EB vs BP

20. EB vs Separatorix Footpoint21 2 11 4 3 6

21. ELLERMAN BOMBS AND MAGNETIC TOPOLOGY
41/47 of the EBs are related to
BPs or footpoints of sepatatorix
(preferential sites of magnetic reconnection in the low chromosphere).

22. SERPENTINE FIELD LINES

23. SERPENTINE FIELD LINES

24. SERPENTINE FIELD LINES

25. THE NATURE OF FLUX EMERGENCE

26. THE NATURE OF FLUX EMERGENCE
Possible origin of undulation
・　Convection
　　　　　G Mm
　　　MG 5Mm
　　　SG 30Mm
・　Parker Instability
　　λ　　＞2Mm

27. EFR,EBについて 多数のBPのうち、EBとして見える条件？ EBが点状であるのはなぜか？ 安定した黒点周辺のミニEBも同じ機構か？
これらの問題については、更なる観測が必要。
光球速度場 horizontal, vertical
large scale, local
time-scale
光球磁場 　 EB近傍の高分解能ベクトルB