Min-Kai Lin (ASIAA, Taiwan) – Streaming instabilities in modern protoplanetary disks

Titre: Streaming instabilities in modern protoplanetary disks

Par : Min-Kai Lin (ASIAA, Taiwan)

Abstract: The formation of km-sized planetesimals is a key step in providing the building blocks of planets. The streaming instability (SI) that arises from the mutual interaction between pebbles and gas is one of the leading mechanisms for planetesimal formation. Under appropriate conditions, the SI can drive the rapid growth of pebble enhancements to the point of gravitational collapse. However, the efficiency of the SI under more realistic conditions expected in protoplanetary disks has not been tested. To this end, I present extended models of the classic SI, including turbulence, stratification, magnetic fields, and non-isothermodynamics. I describe new challenges and pathways for planetesimal formation via the SI when these effects are considered.