Neutron stars can form exceptionally dense clouds of Axions

As Axions, hypothetical elementary particles, feebly interact with light, their presence remains elusive. As the detection axions often rely on their behavior in strong magnetic fields, Neutron stars could serve as an efficient axions laboratory. A new study published in the American Physical Society reports that axions can be trapped by a neutron star’s gravitational force and form exceptionally dense clouds. This dense cloud can grow enormous over a period of a thousand years.