Energy Extraction via Magnetic Reconnection in the Ergosphere of a rotating non-Kerr Black Hole

TL;DR

This paper investigates how magnetic reconnection in the ergosphere of a rotating non-Kerr black hole can extract energy, showing that the process is enhanced by the black hole's deformation parameter.

Contribution

It introduces the study of magnetic reconnection in the ergosphere of a non-Kerr black hole and demonstrates the impact of the deformation parameter on energy extraction.

Findings

Magnetic reconnection can occur in the ergosphere due to frame dragging.

The energy extraction is enhanced by a positive deformation parameter.

Negative energy can be generated at infinity through the process.

Abstract

Magnetic reconnection process in the ergosphere is investigated for a relativistic plasma around a rotating non-Kerr black hole. For a rotating non-Kerr black hole immersed in magnetic field generated by an externally material, anti-parallel magnetic field line could form in the ergosphere due to the frame dragging. Therefore, magnetic reconnection could occur in the ergosphere. Such magnetic reconnection may generate negative energy at infinity by redistributing the angular momentum during the process. The results show that, with the effect of the deformed parameter, extraction of energy from a rotating non-Kerr black hole by magnetic reconnection could be enhanced in the presence of a positive deformed parameter.