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http://dx.doi.org/10.5303/JKAS.2014.47.6.311

KINEMATICS OF SOLAR CHROMOSPHERIC SURGES OF AR 10930  

Bong, Su-Chan (Korea Astronomy and Space Science Institute)
Cho, Kyung-Suk (Korea Astronomy and Space Science Institute)
Yurchyshyn, Vasyl (Big Bear Solar Observatory, New Jersey Institute of Technology)
Publication Information
Journal of The Korean Astronomical Society / v.47, no.6, 2014 , pp. 311-317 More about this Journal
Abstract
Solar chromospheric surges are often reported to contain rotational motion. However, the details of the motion and driving mechanism of the surges are not yet fully understood. Recurrent surges with rotational motion at AR 10930 on the west limb are observed by Hinode Solar Optical Telescope (SOT) continuously from 11:21 UT on December 18 to 09:58 UT on December 19, 2006, using the $Ca_{II}$ H broadband filter. We analyze details of the motion including number of turns from the rise of the surge to the fall, axial speed and acceleration. During the observation, rise and fall motion accompanying rotation appears recurrently. There occur a total of 14 surges at AR 10930 over 17 hours. The average duration is 45 minutes, and the average width, and length are 8 Mm, and 39 Mm, respectively. We speculate that the surges occurred by recurrent reconnections between the twisted prominence and large untwisted flux tube.
Keywords
Sun: chromosphere; Sun: filaments, prominences; Sun: magnetic topology;
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