On linear dust-gas streaming instabilities in protoplanetary discs

2011/04/28 by Emmanuel Jacquet, Steven A. Balbus, Steven Balbus +2 · 8 citations
Engineering · Physics and Astronomy · #Astrophysics and Star Formation Studies #Cartesian coordinate system #Drag #Dust and Plasma Wave Phenomena #Fluid dynamics and aerodynamics studies #Instability #Maxima #Pressure gradient #Radiation pressure #Streaming instability #astro-ph.EP

paper · pdf · doi:10.1111/j.1365-2966.2011.18971.x

9 pages, 1 figure. Accepted to MNRAS

arxiv created 2011/04/28 · openalex publication_date 2011/06/13 · arxiv updated 2015/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We revisit, via a very simplified set of equations, a linear streaming instability (technically an overstability), which is present in, and potentially important for, dusty protoplanetary discs. The goal is a better understanding of the physical origin of such instabilities, which are notoriously subtle. Rotational dynamics seem to be essential to this type of instability, which cannot be captured by one-dimensional Cartesian models. Dust ‘pile-ups’ in moving pressure maxima are an important triggering mechanism of the instability, and drag feedback of dust upon the gas allows these maxima to be strengthened. Coriolis forces and the background drift counteract the effects of the pressure force.

Citations

• The Formation of Planetesimals
• The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals?

Cited by

• Dusty disc–planet interaction with dust-free simulations
• Dust transport in protoplanetary discs with wind-driven accretion
• Concentrating small particles in protoplanetary disks through the streaming instability
• Can dust coagulation trigger streaming instability?
• Impact of Local Pressure Enhancements on Dust Concentration inTurbulent Protoplanetary Discs
• Dynamic role of dust in formation of molecular clouds
• Stability of dusty rings in protoplanetary discs
• Drag-driven instability of a dust layer in a magnetized protoplanetary disc
• Compaction during fragmentation and bouncing produces realistic dust grain porosities in protoplanetary discs

Related

• Analysis of the instability due to gas-dust friction in protoplanetary discs
• Dust-gas dynamics driven by the streaming instability with various pressure gradients
• Two-fluid Instability of Dust and Gas in the Dust Layer of a Protoplanetary Disk
• Effects of Dust Coagulation on Streaming Instability
• Dust dynamics in radially convective regions of protoplanetary disks