August 29, 2022 to September 4, 2022
America/New_York timezone

Electromagnetic radiation from axion condensates in a time dependent magnetic field

Aug 31, 2022, 2:30 PM
25m
Narcissus/Orange

Narcissus/Orange

Parallel session talk Particle and Nuclear Astrophysics PNA: Particle and Nuclear Astrophysics

Speaker

Lars Sivertsen (Iowa State University)

Description

Time-dependent magnetic fields can be sourced by spinning neutron stars, orbiting binaries and merging neutron stars. We consider electromagnetic radiation from
axion condensates in the background of an alternating magnetic field. We find that a resonant peak in radiation can occur when the frequency of the alternating magnetic field is comparable with the axion mass scale. More interestingly, in situations where the frequency of the alternating magnetic field itself changes with time, as can be the case in binary mergers due to a steady increase in orbital frequency, the resonant peak in radiation may occur for a range of axion mass scales scanned by the time-varying magnetic field frequency. radiation may occur for a range of axion mass scales scanned by the time-varying magnetic field frequency.

Primary author

Lars Sivertsen (Iowa State University)

Presentation materials