M87 data from Event Horizon Telescope rules out the likelihood of axion particles in a specific mass range

A team of researchers affiliated with multiple institutions in China and two in Germany has found that data from the Event Horizon Telescope (EHT) rules out the likelihood of axion particles in a specific mass range around the black hole M87. In their paper published in the journal Nature Astronomy, the group describes their analysis of data recently obtained from the EHT and what it showed about time-varying changes in the polarization’s direction.