New Bounds on Axion-Like Particles From the Fermi Large Area Telescope observation of PKS $2155-304$

Cun Zhang, Yun-Feng Liang, Shang Li +5

The axion-like particle (ALP)-photon mixing in the magnetic field around $\gamma$-ray sources or along the line-of-sight could induce oscillation between photons and ALPs, which then ca…