Dissipationless Disk Accretion

TL;DR

This paper presents self-similar solutions for dissipationless disk accretion driven solely by plasma outflows, suggesting a mechanism for low-luminosity astrophysical objects.

Contribution

It introduces a novel model of disk accretion that neglects viscosity and conductivity, focusing on angular momentum loss via plasma outflows.

Findings

Solutions show low-luminosity accretion states

Accretion driven by plasma outflows without dissipation

Potential explanation for faint astrophysical objects

Abstract

We consider disk accretion resulting purely from the loss of angular momentum due to the outflow of plasma from a magnetized disk. In this limiting case, the dissipation due to the viscosity and finite electrical conductivity of the plasma can be neglected. We have obtained self-consistent, self-similar solutions for dissipationless disk accretion. Such accretion may result in the formation of objects whose bolometric luminosities are lower than the flux of kinetic energy in the ejected material.