Electromagnetic radiation from axion condensates in a time dependent magnetic field
arXiv:2111.08728 · doi:10.1007/JHEP05(2022)192
Abstract
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 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.
arXiv comment29 pages, 4 figures
References in corpus (28)
- String Axiverse
- Discovering the QCD Axion with Black Holes and Gravitational Waves
- Axions as Dark Matter Particles
- Non-Linear Axion Dynamics and Formation of Cosmological Pseudo-Solitons
- Black Hole Mergers and the QCD Axion at Advanced LIGO
- Efficient magnetic-field amplification due to the Kelvin-Helmholtz instability in binary neutron star mergers
- Dilute and dense axion stars
- Relativistic axions from collapsing Bose stars
- Dense Axion Stars
- The large-scale modulation of the density distribution in standard axionic CDM and its cosmological and physical impact
- Black hole formation from axion stars
- Stimulated axion decay in superradiant clouds around primordial black holes
- Dark Matter Axion Clump Resonance of Photons
- Analysis of Dark Matter Axion Clumps with Spherical Symmetry
- Axionic instabilities and new black hole solutions
- Collapse of Axion Stars
- Electromagnetic emission from axionic clouds and the quenching of superradiant instabilities
- Magnetic Interactions in Coalescing Neutron Star Binaries
- The Lifetime of Axion Stars
- Superradiance -- the 2020 Edition
- Emission of Photons and Relativistic Axions from Axion Stars
- Plasma Effects on Lasing of Uniform Ultralight Axion Condensate
- Collisions of Dark Matter Axion Stars with Astrophysical Sources
- Neutron star -- axion star collisions in the light of multi-messenger astronomy
- Hydrogen Axion Star: Metallic Hydrogen Bound to a QCD Axion BEC
- Dipole Radiation and Beyond from Axion Stars in Electromagnetic Fields
- Parametric-resonance based phenomenology of gravitating axion configurations
- Scaling of Small-Scale Dynamo Properties in the Rayleigh-Taylor Instability