| Abstract : | Coronal Mass Ejections (CMEs) are the major drivers of space weather, which are capable of radically affecting the Sun-Earth connection and thus it is imperative to understand their kinematics. The dynamics of a CME is an interplay between Lorentz force, gravitational force and viscous drag force, and it is the inner corona (< 3RSun) which best manifests the role of Lorentz force in the same. But we are yet to have a clear understanding of the kinematics of CMEs in the inner corona. It is understood now that around 75% of CMEs show a three part structure with a leading front, a dark cavity (the flux-rope) and the inner core (supposedly the prominence material). However, the individual behaviour of these three parts comprising a single entity (the CME), is poorly understood. Thus in this work, with the help of the combined observations from Sun Watcher using Active pixel system detector and image Processing (SWAP) on-board Project for On-Board Autonomy 2 (PROBA 2) and coronagraph K-COR at Mauna Loa Solar Observatory (MLSO) we probe the kinematic signatures of the above three parts of CMEs. The results from this work will improve our understanding of the initiation process, and it will also help us understand the validity of self-similar expansion of CMEs in the lower heights. |
