Length and Velocity Scales in Protoplanetary Disk Turbulence
Abstract
In the theory of protoplanetary disk turbulence, a widely adopted ansatz, or assumption, is that the turnover frequency of the largest turbulent eddy, Ω_{ L }, is the local Keplerian frequency Ω_{ K }. In terms of the standard dimensionless Shakura–Sunyaev α parameter that quantifies turbulent viscosity or diffusivity, this assumption leads to characteristic length and velocity scales given respectively by
 Publication:

The Astrophysical Journal
 Pub Date:
 May 2024
 DOI:
 10.3847/15384357/ad2c89
 arXiv:
 arXiv:2402.15475
 Bibcode:
 2024ApJ...966...90S
 Keywords:

 Protoplanetary disks;
 Solar system;
 1300;
 1528;
 Astrophysics  Earth and Planetary Astrophysics
 EPrint:
 Accepted for publication in ApJ