Constraining the Initiation and Early Evolution of CMEs with SECCHI on STEREO
One of the major objectives of the STEREO mission is to understand how and where Coronal Mass Ejections (CMEs) are accelerated. We review here the status of our knowledge from SECCHI CME observations in the period 2007–2009 about various topics concerned with the early stages of CMEs. This includes: impulsively accelerated CMEs, the flare-CME relationship, EUV dimmings, EUV waves and eruptive prominences. We will show how the unique characteristics of this mission and most importantly the distinct viewpoints and the high image cadence allowed for significant progress in the above mentioned areas. We also discuss potential future uses of SECCHI data.
KeywordsHigh Cadence Extreme Ultraviolet Image Telescope Acceleration Profile Magnetic Flux Rope Stereo Observation
I’m grateful to my colleagues Angelos Vourlidas, Eva Robbrecht, Bernhard Kliem, Yi-Ming Wang, Arnaud Thernisien and Guillermo Stenborg for many discussions on various topics discussed here. I wish to thank the organizers of the IAGA 2009 meeting and Kuen Ko in particular for giving me the opportunity to give this chapter. Special thanks go the referee for helpful comments/suggestions. The SECCHI data used here were produced by an international consortium of the Naval Research Laboratory (USA), Lockheed Martin Solar and Astrophysics Lab (USA), NASA Goddard Space Flight Center (USA), Rutherford Appleton Laboratory (UK), University of Birmingham (UK), Max−Planck−Institute for Solar System Research (Germany), Centre Spatiale de Lièege (Belgium), Institut d Optique Théorique et Appliqueé (France), and Institut dAstrophysique Spatiale (France).
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