Dynamic Features of Current Sheet Associated with the 2010 August 18 Solar Flare

摘要

We report the observation of the magnetic reconnection site in the 2010 August 18 flare. We simultaneously found both reconnection inflow and outflow. By using these velocities, we estimated the nondimensional reconnection rate and found that it varied from 0.20 to 0.055. We also observed dynamic plasma blobs in the sheet structure. The plasma blobs collided with the hot loops and radio emissions were found at this site, which may suggest particle acceleration. We hypothesize that the sheet structure is the current sheet and that these plasma blobs are plasmoids, which could be important for understanding the dynamics of the reconnection region.