Active Galactic Nuclei Shed Light on Axion-like-Particles

TL;DR

This paper proposes a novel method using luminosity scatter in astrophysical objects to search for axion-like particles, applying it to active galactic nuclei data, and finds suggestive evidence for very light ALPs.

Contribution

It introduces a new approach to detect ALPs by analyzing luminosity scatter in astrophysical observations, specifically applied to active galactic nuclei.

Findings

Evidence strongly suggests the existence of very light ALPs.

Luminosity scatter analysis can be an effective tool for ALP searches.

The method provides new constraints on ALP properties.

Abstract

We demonstrate that the scatter in the luminosity relations of astrophysical objects can be used to search for axion-like-particles (ALPs). This analysis is applied to observations of active galactic nuclei, where we find evidence strongly suggestive of the existence of a very light ALP.