Jet magnetically accelerated from disk-corona around a rotating black hole

TL;DR

This paper proposes a jet acceleration model from disk-corona around rotating black holes, deriving jet power analytically and comparing it with observations, showing the model's effectiveness in explaining high-power jets not accounted for by previous theories.

Contribution

The paper introduces a new jet acceleration model based on disk-corona dynamics and electronic circuit theory, providing analytical expressions for jet power and demonstrating its applicability to observed quasars.

Findings

Jet power increases with black hole spin.

Model explains high-power jets beyond Blandford-Znajek process.

Consistent with observations of radio loud quasars.

Abstract

A jet acceleration model for extracting energy from disk-corona surrounding a rotating black hole is proposed. In the disk-corona scenario, we obtain the ratio of the power dissipated in the corona to the total for such disk-corona system by solving the disk dynamics equations. The analytical expression of the jet power is derived based on the electronic circuit theory of the magnetosphere. It is shown that jet power increases with the increasing black hole (BH) spin, and concentrates in the inner region of the disk-corona. In addition, we use a sample consisting of 37 radio loud quasars to explore their jet production mechanism, and show that our jet formation mechanism can simulate almost all sources with high power jet, that fail to be explained by the Blandford-Znajek (BZ) process.