Axionlike dark matter clouds around rotating black holes

Numerical analysis of a dark matter axionlike cloud in the vicinity of a rotating black hole has been performed. The model where an axionlike scalar field is nontrivially coupled to the Maxwell field is studied in the spacetime of a Kerr black hole in a uniform magnetic field and in the Kerr-Newman one. The dependence of scalar mass and black hole angular momentum on accumulation of the axion dark matter cloud was given. It was revealed that condensation of the dark matter clouds is preferable for a very small mass of axion.

Automated summary

This study conducted numerical analysis of a dark matter axionlike cloud near a rotating black hole, studying a model where an axionlike scalar field is coupled to the Maxwell field. It was found that condensation of the axion dark matter cloud is preferable for a very small mass of axion.