Formation of planetesimals via the streaming instability - numerical simulations -

点击翻译按钮获取中文摘要

The streaming instability is a mechanism to overcome the barriers impeding the growth of solid particles to planetesimals in laminarflows. It is thus a viable mechanism to close a gap in the theory of planet formation. Via the streaming instability, particles can beconcentrated in dense filaments, in which gravitationally unstable particle clumps form planetesimals. Currently, the PhD student UrsSch\"afer at the Hamburg Observatory is performing numerical simulations to investigate the efficiency of the streaming instability to form planetesimals for various disc properties. This is done with a novel numerical approach including the gravitational potential of thecentral star in global simulations with the FLASH code.