Hawking-like radiation of charged particles via tunneling across the lightcylinder of a rotating magnetosphere

TL;DR

This paper proposes that the lightcylinder in rotating magnetospheres acts like a horizon, leading to Hawking-like radiation of charged particles through tunneling, drawing an analogy with gravitational black hole horizons.

Contribution

It introduces a novel analogy between the lightcylinder in magnetospheres and black hole horizons, predicting Hawking-like radiation of charged particles via tunneling.

Findings

Hawking-like radiation can occur at the lightcylinder of a magnetosphere.

Charged particles can tunnel across the lightcylinder boundary.

The field sheet metric provides a framework for this tunneling process.

Abstract

In rotating magnetospheres planted on compact objects, there usually exist lightcylinders (LC), beyond which the rotation speed of the magnetic field lines exceeds the speed of light. The LC is a close analog to the horizon in gravity, and is a casual boundary for charged particles that are restricted to move along the magnetic field lines. In this work, it is proposed that there should be Hawking-like radiation of charged particles from the LC of a rotating magnetosphere from the point of view of tunneling by using the field sheet metric.