Constraints on massive axion-like particles from X-ray observations of NGC 1275
Constraints on massive axion-like particles from X-ray observations of NGC 1275
If axion-like particles (ALPs) exist, photons can convert to ALPs on passage through regions containing magnetic fields. The magnetised intracluster medium of large galaxy clusters provides a region that is highly efficient at ALP-photon conversion. X-ray observations of Active Galactic Nuclei (AGNs) located within galaxy clusters can be used to …