The Role of Filament-Filament Collision in Star Formation
speaker: Raiga Kashiwagi
Abstract:
Filamentary structures are recognized as a fundamental component of interstellar molecular clouds in observations made by the Herschel satellite. In addition, most of the prestellar cores, which will become protostars in the future have been found along gravitationally unstable filaments. These observational results have led to a strong interest in the relationship between filaments and star formation. Recently, some observations imply that star formation is caused by filament-filament collisions. However, theoretical predictions are still insufficient: how they will evolve and which physical parameters change their evolution. Thus, we investigate filament-filament collisions by using numerical simulations. In this seminar, I will report the preliminary results of 2d-hydrodynamical simulations, and discuss the detailed evolution of filament-filament collisions.