The Powers of Relativistic Jets depend on the Spin of Accreting Supermassive Black Hole

TL;DR

This study demonstrates that the power of relativistic jets in active galactic nuclei is primarily driven by the spin of supermassive black holes and accretion, with observational evidence supporting the spin energy as the main jet power source.

Contribution

It provides observational evidence linking black hole spin and accretion to jet power, highlighting the dominant role of black hole spin in jet production.

Findings

Significant correlation between jet power and black hole spin.

Black hole spin and accretion contribute over 95% to jet power.

Jet efficiency explained by magnetically arrested disks around spinning black holes.

Abstract

Theoretical models show that the power of relativistic jets of active galactic nuclei depends on the spin and mass of the central supermassive black holes, as well as the accretion. Here we report an analysis of archival observations of a sample of blazars. We find a significant correlation between jet kinetic power and the spin of supermassive black holes. At the same time, we use multiple linear regression to analyze the relationship between jet kinetic power and accretion, spin and black hole mass. We find that the spin of supermassive black holes and accretion are the most important contribution to the jet kinetic power. The contribution rates of both the spin of supermassive black holes and accretion are more than 95\%. These results suggest that the spin energy of supermassive black holes powers the relativistic jets. The jet production efficiency of almost all Fermi blazars can be explained by moderately thin magnetically arrested accretion disks around rapidly spinning black holes.