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| Paper: |
Photospheric Magnetic Motions and a Flare Trigger Mechanism on AR 10930 |
| Volume: |
454, The 3rd Hinode Science Meeting |
| Page: |
307 |
| Authors: |
Yamamoto, T. T.; Kusano, K. |
| Abstract: |
In this paper we report shear motions (3–5 km s-1) of magnetic elements observed at a preflare of an X3.4 flare (around 02:00 UT on 2006 December 13) in active region 10930. This preflare is observed by X-ray Telescope onboard Hinode. Velocity fields are obtained from filter magnetograms of the Solar Optical Telescope. We also analyzed velocity fields divided into divergent and rotation components. From these velocity components, two local twisting motions are found. One twisting motion continues for 0.5 hours, and another continues at least for 2.5 hours. |
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