Contributions to the Sun-Heliosphere Studies Using SOHO and Ulysses Data

CMEs are one of the most amazing solar phenomena with deep implications in terrestrial life too. Our project covers the follow up of a CME from the solar source to the interplanetary space, using ESA missions. Our research focuses on active regions evolution and magnetic field extrapolation in 3D to reveal magnetic reconnections responsible for flares and other phenomena. Large scale magnetic reconnections are frequently responsible for the filaments destabilization and CMEs onset. Huge polar prominences or complex filaments appearing near the solar maximum and the period of polarity changes often end in spectacular CMEs. SOHO and ground based multiwavelengths observations gain us understand of these phenomena. Another objective of our research is the link between the solar sources of CMEs and the ICMEs registered by Ulysses. The track back of the ICMEs to the Sun constitutes in a challenge and we tried to make connections between the phenomena registered by SOHO and Ulysses during the solar maximum northern polar passage.