Jet Formation in MHD Simulations

TL;DR

This paper reviews current numerical simulations of jet formation in black-hole accretion systems, addressing key questions about jet properties, launching mechanisms, and the influence of initial conditions.

Contribution

It provides a comprehensive overview of the state-of-the-art in MHD simulations of black-hole jets and discusses how initial conditions affect jet characteristics.

Findings

Jet properties depend on initial simulation conditions

The launching mechanism involves magnetic field configurations

Jet collimation and Lorentz factors vary with setup

Abstract

In this talk I review the current status of jet formation in direct numerical simulations of black-hole accretion disks and magnetospheres. I address the following critical questions: What constitutes the jet? What is the launching mechanism? Where is the launching point of the jet? What is the Lorentz factor? What is the opening angle? How is the jet collimated? Just as importantly, I also discuss how dependent the answers to the above questions are on factors such as the initial conditions of the simulation. I end by discussing possible future directions for this research.