Understanding Coronal Mass Ejections in Magnetically-Active Stars

While Coronal Mass Ejections (CMEs) are known to be the most energetic manifestation of magnetic activity on the Sun, their stellar counterparts have remained, for the most part, elusive to our detection attempts. This situation, which is in stark contrast with the significantly enhanced observed level of flaring activity of stars, questions our understanding of the extension of the solar flare-CME connection to the stellar domain. In this presentation, I have emphasized the crucial role played by the stellar magnetic field in shaping the properties of CMEs in active stars. With the aid of state-of-the-art numerical simulations, we have explored the process of magnetic confinement of CMEs by a strong large-scale stellar magnetic field. This exploration includes multiple consequences ranging from the existence of the eruption itself, to different observational signatures emerging as this process takes place in the stellar atmosphere. These results are placed in context with our current observational knowledge of stellar CMEs and avenues are given to continue improving our understanding of these transient events on other stars.