Bulletin of the Korean Space Science Society (한국우주과학회:학술대회논문집(한국우주과학회보))
- 2009.10a
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- Pages.37.4-38
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- 2009
Testing Capability of CME Eccentricity Parameter
- Rho, Su-Lyun (Korea Astronomy and Space Science Institute) ;
- Cho, Kyung-Suk (Korea Astronomy and Space Science Institute) ;
- Chang, Heon-Young (Department of Astronomy & Atmospheric Sciences, Kyungpook National University) ;
- Moon, Yong-Jae (Astronomy & Space Science, KyungHee University) ;
- Kim, Rok-Soon (Astronomy & Space Science, Chungnam National University) ;
- Park, Young-Deuk (Korea Astronomy and Space Science Institute)
- Published : 2009.10.15
Abstract
Rho et al.(2008) showed that the eccentricity parameter of a CME is an important indicator for forecasting CME geoeffectiveness. In this study we have tested a capability of the eccentricity parameter as an indicator of CME direction. For this work we considered 11 CMEs observed by both SOHO/LASCO and STEREO/SECCHI (2007-2008 from Temmer et al. 2009) coronagraphs. We have estimated earthward direction angles for these CMEs based on two different methods: (1) the eccentricity parameter from a single coronagraph SOHO/LASCO and (2) the triangulation technique using a pair of spacecrafts LASCO/STEREO-A and LASCO/STEREO-B. As a result, we have found that for 7 out of 11 CME events their direction angles are consistent with each other within
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