Emergence of High Peaks in the Axial Velocity for an Ideal Magnetohydrodynamics Disk Configuration

TL;DR

This paper investigates the steady-state behavior of an ideal magnetohydrodynamics disk, revealing local peaks in vertical velocity that could seed matter jets, despite not addressing angular momentum transport.

Contribution

It introduces a model showing how ideal MHD disks can generate vertical velocity peaks, offering insights into jet seed formation without solving angular momentum transport.

Findings

Local peaks in vertical velocity exist in the disk.

Radial matter accretion is prevented in this model.

Potential mechanism for matter-jet seed generation.

Abstract

We study the profile of a thin disk configuration as described by an axisymmetric ideal magnetohydrodynamics steady equilibrium. We consider the disk like a differentially rotating system dominated by the Keplerian term, but allowing for a non-zero radial and vertical matter flux. As a result, the steady state allows for the existence of local peaks for the vertical velocity of the plasma particles, though it prevents the radial matter accretion rate. This ideal magnetohydrodynamics scheme is therefore unable to solve the angular momentum-transport problem, but we suggest that it provides a mechanism for the generation of matter-jet seeds.