Energy Extraction via Magnetic Reconnection in Lorentz breaking Kerr-Sen and Kiselev Black Holes

TL;DR

This paper explores how magnetic reconnection can extract energy from Lorentz-breaking Kerr-Sen black holes, showing it can be more efficient than traditional mechanisms and is influenced by charge parameters.

Contribution

It investigates magnetic reconnection energy extraction in Lorentz-breaking Kerr-Sen black holes, highlighting the effects of charge and rotation on efficiency, and compares with other black hole solutions.

Findings

Magnetic reconnection can extract energy even from moderately rotating black holes.

Charge parameters significantly influence the energy extraction process.

Magnetic reconnection can outperform the Blandford-Znajek mechanism under certain conditions.

Abstract

Black holes can accumulate a large amount of energy, responsible for highly energetic astrophysical phenomena Recently, fast magnetic reconnection (MR) of the magnetic field was proposed as a new way to extract energy and in this paper, we investigate this phenomena in a bumblebee Kerr-Sen BH. We find that the presence of the charge parameter strongly changes the simple Kerr case, making this extraction mechanism possible even for not extremely rotating black holes ($a \sim 0.7$). We also show that, under appropriate circumstances, MR is more efficient compared to the Blandford-Znajek mechanism. We finally compare these results with quintessence black-hole solutions not finding and enhancement respect to Kerr solution.