Searching for Axion-like Particles with Active Galactic Nuclei

Abstract

Strong mixing between photons and axion-like particles in the magnetic fields of clusters of galaxies induces a scatter in the observed luminosities of compact sources in the cluster. This is used to construct a new test for axion-like particles; applied to observations of active galactic nuclei it is strongly suggestive of the existence of a light axion-like particle.

4 pages, 3 figures. Contribution to the "5th Patras Workshop on Axions, WIMPs and WISPs", Durham 13-17 July 2009

References in corpus (5)

• Chameleon Cosmology
• The X-ray-to-Optical Properties of Optically-Selected Active Galaxies Over Wide Luminosity and Redshift Ranges
• Dimming Supernovae without Cosmic Acceleration
• Detecting Chameleons: The Astronomical Polarization Produced by Chameleon-like Scalar Fields
• Active Galactic Nuclei Shed Light on Axion-like-Particles