Launching of jets by cold, magnetized disks in Kerr Metric

TL;DR

This paper confirms that cold, magnetized disks near fast-rotating black holes can launch highly collimated jets centrifugally, with implications for understanding jet formation in active galactic nuclei.

Contribution

It demonstrates the magneto-centrifugal launching mechanism for jets in Kerr black hole environments, extending previous findings with new analysis.

Findings

Jets can be launched centrifugally by cold, magnetized disks near fast-rotating black holes.

Outflows are highly collimated and occur even with nearly vertical magnetic flux surfaces.

Implications for jet formation scenarios in active galactic nuclei are discussed.

Abstract

We confirm recent discovery by Cao that in the vicinity of fast rotating black holes jets can be launched centrifugally by cold, magnetized disks even for nearly vertically shaped magnetic flux surfaces. Outflows produced under such extreme conditions are investigated via studying kinematics of test particles in the force-free magnetosphere approximation. Implications of a possibility of magneto-centrifugal launching of very well collimated central outflows around the fast rotating black holes are discussed in the general context of the jet formation scenarios in AGNs.