Dense core collision using MHD simulation
speaker: Shinichi Kinoshita
Abstract:
The collision between clouds in the ISM is an important phenomenon to study, and there is increasing observational evidence that cloud–cloud collisions trigger stars and cluster formation in the Milky Way. Observational evidence of triggered star formation by cloud-to-cloud collisions comes mainly from relatively large scale star formation events that produce massive stars and clusters. Therefore, many numerical studies to date have been concerned with collisions between high mass clouds. However, in turbulent molecular clouds, a core collision may occur on a smaller scale. In turbulent molecular clouds, due to the randomness of gas velocities, small over-densities can be formed throughout the cloud and dense core collisions can occur due to the velocity dispersion between them. We investigate, using three-dimensional magnetohydrodynamical (MHD) simulations, core collisions between two stable dense cores. In our simulations, we considered the effect of magnetic fields on the collision process and focused on their observational features. In this presentation, I will discuss the evolution of dense core collisions and comparison with observational data.