Width of Radio-Loud and Radio-Quiet CMEs |
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Authors: | G. Michalek N. Gopalswamy H. Xie |
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Affiliation: | (1) Astronomical Observatory of Jagiellonian University, Cracow, Poland;(2) Solar System Exploration Division, NASA GSFC, Greenbelt, MD, USA;(3) Center for Solar and Space Weather, Catholic University of America, Washington, USA |
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Abstract: | In the present paper we report on the difference in angular sizes between radio-loud and radio-quiet CMEs. For this purpose we compiled these two samples of events using Wind/WAVES and SOHO/LASCO observations obtained during 1996 – 2005. We show that the radio-loud CMEs are almost twice as wide as the radio-quiet CMEs (considering expanding parts of CMEs). Furthermore, we show that the radio-quiet CMEs have a narrow expanding bright part with a large extended diffusive structure. These results were obtained by measuring the CME widths in three different ways. |
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Keywords: | Sun: solar activity Sun: coronal mass ejections Sun: solar radio emission |
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