Turbulence-induced viscosity is dominant in an underdetermined model of these entities named alpha and due to Shakura and Sunyaev.
Turbulence-induced viscosity is dominant in an underdetermined model of these entities named alpha and due to Shakura and Sunyaev. Momentum advection in these systems may be partly explained by the magnetorotational instability, since most of them violate the magneto-Rayleigh criterion; magnetized examples of these objects can also experience magnetic reconnection, which can lead to jet formation by the Blandford-Znajek process. A semi-classical model of these structures combines Kramers' law with the law of hydrostatic equilibrium for a rotating system. Some of these associated with Herbig stars are described as protoplanetary, while all of them redistribute angular momentum, causing material inward toward their central bodies. For ten points, identify these astronomical objects, which form when material coalesces around and begins falling into a gravitational object like a black hole.
Turbulence-induced viscosity is dominant in an underdetermined model of these entities named alpha and due to Shakura and Sunyaev.
{accretion disk}s (prompt on {disk}s)