Some effects of nonlinear vacuum electrodynamics in strong magnetic and gravitational fields of the pulsar

TL;DR

This paper investigates how nonlinear vacuum electrodynamics affects the propagation of high-energy radiation in pulsar environments, revealing mode splitting and velocity differences that could influence observational signals.

Contribution

It provides a theoretical analysis of radiation propagation in strong magnetic and gravitational fields considering nonlinear electrodynamics effects, including mode polarization and velocity delay calculations.

Findings

Radiation propagates as two orthogonally polarized modes with different velocities.

A calculable delay exists between the two modes during propagation.

Mode splitting could impact pulsar emission observations.

Abstract

We consider the propagation of X-ray and gamma ray emissions in strong magnetic and gravitational fields of the pulsar in nonlinear vacuum electrodynamics. We show that the radiation will spread from the pulsar to the detecting device in the form of two normal modes polarized in mutually orthogonal planes, and having different velocities. We have calculated the delay between the two modes, as they propagate from the pulsar to the detecting device.