Constraining axion-like-particles with hard X-ray emission from magnetars
Constraining axion-like-particles with hard X-ray emission from magnetars
Axion-like particles (ALPs) produced in the core of a magnetar will convert to photons in the magnetosphere, leading to possible signatures in the hard X-ray band. We perform a detailed calculation of the ALP-to-photon conversion probability in the magnetosphere, recasting the coupled differential equations that describe ALP-photon propagation into a …