Flare Ribbon Expansion and Energy Release

Details Flare Ribbon Expansion and Energy Release Flare Ribbon Expansion and Energy Release

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006japa...27..167a&link_type=abstract

Journal of Astrophysics and Astronomy, vol. 27, no.2 & 3 P. 167-173

Astronomy and Astrophysics

Astrophysics

4

Sun: Activity, Sun: Flares, Chromosphere, Corona, X-Rays, Gamma Rays.

Scientific paper

We report a detailed examination about the relationship between the evolution of the Hα flare ribbons and the released magnetic energy during the April 10 2001 flare. In the Hα images, several bright kernels are observed in the flare ribbons.We identified the conjugated footpoints, by analyzing the lightcurves at each Hα kernels, and showed their connectivities during the flare. Then, based on the magnetic reconnection model, we calculated quantitatively the released energy by using the photospheric magnetic field strengths and separation speeds of the Hα flare ribbons. Finally, we examined the downward motions which are observed at the Hα kernels. We found that the stronger the red-asymmetry tends to be associated with the brighter the Hα kernel.

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