Radio Line Properties of Axion Dark Matter Conversion in Neutron Stars

Understand

Axions are well-motivated candidates for dark matter.

• Recently, much interest has focused on the detection of photons produced by the resonant conversion of axion dark matter in neutron star magnetospheres.
• Various groups have begun to obtain radio data to search for the signal, however, more work is needed to obtain a robust theory prediction for the corresponding radio lines.
• In this work we derive detailed properties for the signal, obtaining both the line shape and time-dependence.