(tentative) On the X1.4 Flare of 12-Jul-2012

Aki Takeda, Keiji Yoshimura, David E. McKenzie,,,, (your name here!)

SPD 2013 version is here.

1. Introduction

previous version of this page

Solar activity



GOES/XRS flux variation for longer period (22-Jun-2012 -- 22-jul-2012)
XRT synoptic(whole sun) observation movie (7-jul to 15-jul).

2. Observation

AR11520

Images & movies from other satellites

3. Interpretation

What are special/interesting points with this event?

[bat wing study]
Batwings (extracted from AIA/304 diff. images) on magnetogram (7/12 17:39):    Movie    Overlay image
Batwing 1 (East) (7/12 16:30 --- 7/12 18:00)     quick analysis of the expanding speed
Batwing 2 (West) (7/12 16:30 --- 7/12 18:00)

Timeline of the AR evolution

  1. 2012/07/06 04:00:00 --- East limb passage.
  2. 2012/07/08 00:00:00 --- Emergence of N4-P4 pairs.
  3. 2012/07/09 23:03:00 --- M1.1 flare between N4-P4.
  4. 2012/07/10 04:58:00 --- M1.7 flare between N4-P4.
  5. 2012/07/10 06:05:00 --- M2.0 flare among N4-P4, P2.
  6. 2012/07/10 12:08:00 --- C5.5 flare among N4-P4, P2.
  7. 2012/07/10 12:37:00 --- C4.6 flare among N4-P4, P2.
  8. 2012/07/10 15:27:00 --- C5.6 flare between N4-P1.
  9. 2012/07/11 00:00:00 --- Lower loops started to extend to SW.
  10. 2012/07/11 21:44:00 --- C5.6 flare among N4-P2, P4.
  11. 2012/07/12 01:23:00 --- C4.0 flare between N4-P1.
  12. 2012/07/12 07:46:00 --- C3.1 flare between N4-P1.
  13. 2012/07/12 12:40:00 --- Sigmoid loops brightening in 94A.
  14. 2012/07/12 13:30:00 --- Bar loop started to appear in 131A.
  15. 2012/07/12 14:13:00 --- Bar loop & sigmoid loop interaction.
  16. 2012/07/12 14:50:00 --- Sigmoid loop W-end small erruptiion in 94A.
  17. 2012/07/12 15:00:00 --- Sigmoid loop started activated.
  18. 2012/07/12 15:05:00 --- Lower loops started to expand to SW.
  19. 2012/07/12 15:37:00 --- X1.4 flare started (GOES criterion).
  20. 2012/07/12 15:39:00 --- Brightening around P2 light-bridge in 1600A.
  21. 2012/07/12 15:45:00 --- Main flare ribbon started to appear in 1600A.
  22. 2012/07/12 15:50:00 --- Sigmoid loop W-end little shrinkage in 94A.
  23. 2012/07/12 15:55:00 --- Sigmoid loop started fast to expand in 94A.
  24. 2012/07/12 15:59:00 --- West bat wing started to extend in 1600A.
  25. 2012/07/12 16:26:00 --- Flare ribbon extension in XRT.
  26. 2012/07/12 16:27:00 --- West-side post flare loops developed.
  27. 2012/07/12 16:39:00 --- East bat wing started to extend in 1600A.
  28. 2012/07/12 16:40:00 --- East-side post flare loops developed.
  29. 2012/07/14 04:51:00 --- M1.0 flare between N4-P1.
2012/07/09 23:03M1.1N4 -- P4
2012/07/10 04:58M1.7N4 -- P4
2012/07/10 06:05M2.0N4 -- P4,P2
2012/07/10 12:08C5.5N4 -- P4,P2
2012/07/10 12:37C4.6N4 -- P4,P2
2012/07/10 15:27C5.6N4 -- P1
2012/07/11 21:44C5.6N4 -- P2,P4
2012/07/12 01:23C4.0N4 -- P1
2012/07/12 07:46C3.1N4 -- P1
2012/07/12 15:37X1.4N4 -- P2,P3,P4
2012/07/12 15:37X1.4N4 -- P1
2012/07/14 04:51M1.0N4 -- P1

M-flares from AR11810 in AIA/131A
M-flares from AR11810 in AIA/304A