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KINEMATICS OF SOLAR CHROMOSPHERIC SURGES OF AR 10930
봉수찬,조경석,Vasyl Yurchyshyn 한국천문학회 2014 Journal of The Korean Astronomical Society Vol.47 No.6
Solar chromospheric surges are often reported to contain rotational motion. However, thedetails of the motion and driving mechanism of the surges are not yet fully understood. Recurrent surgeswith 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 Hbroadband filter. We analyze details of the motion including number of turns from the rise of the surge tothe fall, axial speed and acceleration. During the observation, rise and fall motion accompanying rotationappears recurrently. There occur a total of 14 surges at AR 10930 over 17 hours. The average durationis 45 minutes, and the average width, and length are 8 Mm, and 39 Mm, respectively. We speculate thatthe surges occurred by recurrent reconnections between the twisted prominence and large untwisted fluxtube.