  Axions or more generally axion-like particles (ALPs) are pseudo-scalar
particles predicted by many extensions of the Standard Model of particle
physics (SM) and considered as highly viable candidates for dark matter (DM) in
the universe. If they exist in nature, they are expected to couple with photons
in the presence of an external magnetic field through a form of the Primakoff
effect. In this work, we examine the detectability of signals produced by
ALP-photon coupling in the highly magnetized environment of the relativistic
jets produced by active galactic nuclei (AGNs). Furthermore, we test a cosmic
background ALP model, motivated by its explanation of the Coma cluster soft
X-ray excess, in the environment of the M87 AGN jet. We then demonstrate the
potential of the AGN jet environment to probe low-mass ALP models and to
potentially constrain the model proposed to explain the Coma cluster X-ray
excess.
