Axions can't be perfectly dark matter, they're very weakly interacting with electrons and the EM field. They would be the Higgs field of the strong force (Axio

Axions can't be perfectly dark matter, they're very weakly interacting with electrons and the EM field. They would be the Higgs field of the strong force (Axions were initially also named a "higglet") and would be an electrically neutral scalar particle like the Higgs, and that would interact with magnetic fields by the Primakoff effect: https://en.wikipedia.org/wiki/Primakoff_effect https://en.wikipedia.org/wiki/Primakoff_effect