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Flare: motion of H-alpha kernels and coronal sources

Flare: motion of H-alpha kernels and coronal sources. Haisheng Ji Purple Mountain Observatory Nanjing, China. Method to determine the positions of H-alpha kernel (centroid):. But, we need to subtract the background, in order to get the real motion !. T1. T2. Region 1. Region 2. T1.

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Flare: motion of H-alpha kernels and coronal sources

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  1. Flare: motion of H-alpha kernels and coronal sources Haisheng Ji Purple Mountain Observatory Nanjing, China

  2. Method to determine the positions of H-alpha kernel (centroid): But, we need to subtract the background, in order to get the real motion !

  3. T1 T2 Region 1 Region 2

  4. T1 T2 Region 1 Region 2

  5. The M-class flare of Sept 9, 2002

  6. Background-subtracted H-alpha images

  7. Height of the coronal source

  8. The November 1, 2004 M-class event taken at Purple Mountain Observatory with 1s cadence

  9. The M-class flare of August 17, 2002. BBSO full disk images with 1 minute cadence

  10. Rhessi HXR source at different times

  11. 12-25 keV ‘Height’ of the HXR sources Centroid distance of the two conjugate Ha kernels

  12. The M-1 class flare of July 26, 2002

  13. Further work needed: • Classify H-alpha kernel motions • Get fine structure of H-alpha kernel motions • HXR source motions To infer reconnection behavior Thanks!

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