Modification of Aberration due to the Helicity-Rotation Coupling

TL;DR

This paper discusses how the helicity-rotation coupling causes slight modifications to the standard aberration formulas for polarized radiation, highlighting the physical origin and estimating the magnitude of this effect.

Contribution

It introduces a helicity-dependent modification to the relativistic aberration formula due to rotation, expanding understanding of polarization effects in relativistic physics.

Findings

Helicity of radiation couples to rotation, causing minor aberration modifications.

The effect is polarization-dependent, unlike standard formulas.

Estimated magnitude of the helicity aberration effect.

Abstract

We review the physical basis for the assumption of locality in relativistic physics and its connection with the aberration of starlight. As a consequence of the hypothesis of locality, the standard relativistic formulas for the Doppler effect and aberration are independent of the polarization of the incident electromagnetic or gravitational radiation. The modification of these formulas due to the helicity-rotation coupling are discussed. In connection with the aberration of polarized radiation, we note that the helicity of radiation incident on a rotating observer couples to its angular velocity of rotation resulting in a slight helicity-dependent modification of the standard aberration formula. We discuss the physical origin of this effect and estimate the magnitude of the helicity aberration.