Propagation of Coronal Mass Ejections in the Inner Heliosphere

摘要: Solar Coronal mass ejections (CMEs) are large-scale of plasma and magnetic field from the corona, which propagate through interplanetary space. CMEs most significant drivers adverse space weather on Earth, but physics governing their propagation Heliosphere is not well understood. This mainly due to limited fields-of-view plane-of-sky projected nature previous observations. The Terrestrial Relations Observatory (STEREO) mission launched in October 2006, was designed overcome these limitations. In this thesis, a method for full three dimensional (3D) reconstruction trajectories using STEREO developed. Using 3D trajectories, true kinematics were derived, free projection effects. Evidence solar wind (SW) drag forces acting found, with fast CME decelerated slow accelerated toward typical SW velocities. It also found that showed linear dependence velocity difference between SW, while quadratic dependence. differing forms two indicated responsible acceleration may have been different. known generate bow shocks as they corona SW. Although CME-driven previously detected indirectly via emission at radio frequencies, direct imaging has remained elusive low contrast optical wavelengths. observations, first images shock it propagates 8 R_Sun 120 (0.5 AU) captured. These observations compared empirically derived relation general good agreement.