Statistical study on the relationship between halo CME and coronal dimming  

作　　者：LIU Kai1, XIA LiDong2, CHEN Yao2 & SONG HongQiang2 1 School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China 2 Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Shandong University at Weihai, Weihai 264209, China 

出　　处：《Science China(Technological Sciences)》2010年第7期2020-2024,共5页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 40774080, 40774094, and 40890162);the MSTC underthe 973 Program (Grant No. G2006CB806304);supported by the Foundation for the Author of National Excellent Doctoral Dissertation of China (2007B24)

摘　　要：The data from SOHO/EIT and SOHO/LASCO observations are used to determine the relationship between coronal dimming and full halo CME (coronal mass ejection). The events of full halo CME examined in this study were observed by LASCO co-ronagraphs and taken from the CD AW CME catalog from 1996 to 2008. Dimming events are identified by using difference images taken by EIT at the 195 A passband. We found strong relationship between full halo CMEs and the coronal dimming events, with up to 93.3% of the front-side halo CMEs associated with the EIT 195 A dimming events. Full halo CMEs that show no clear signatures of dimming usually have lower sky plane velocities (【700 km/s) compared to the mean velocity of CMEs associated with dimming.

关 键 词：Sun CORONAL mass EJECTION CORONAL DIMMING EXTREME-ULTRAVIOLET 

分 类 号：P182.62[天文地球—天文学]