# Astrophysical jets from boosted compact objects

## TL;DR

This paper uses 3D simulations to study how compact objects like black holes and neutron stars generate astrophysical jets when moving through a plasma, revealing how jet power depends on velocity and other parameters.

## Contribution

The study provides new insights into jet formation mechanisms from boosted compact objects, including the impact of velocity, magnetic field orientation, and black hole spin, with detailed numerical simulations.

## Key findings

- Jet power scales as γv^2 with boost velocity.
- Black hole spin and magnetic field orientation influence jet properties.
- Curvature effects and surface conductivity both enhance luminosity in neutron stars.

## Abstract

We perform full 3D numerical simulations of compact objects, such as black holes or neutron stars, boosted through an ambient force-free plasma that posses a uniform magnetization. We study jet formation and energy extraction from the resulting stationary late time solutions.The implementation of appropriate boundary conditions has allowed us to explore a wide range of boost velocities, finding the jet power scales as $\gamma v^2$ (being $\gamma$ the Lorentz factor). We also explore other parameters of the problem like the orientation of the motion respect to the asymptotic magnetic field or the inclusion of black hole spin. Additionally, by comparing a black hole with a perfectly conducting sphere in flat spacetime, we manage to disentangle curvature effects from those produced by the perfect conducting surface. It is shown that when the stellar compactness is increased these two effects act in combination, further enhancing the luminosity produced by the neutron star.