Astrophysical Haloscopes

Abstract

We compute the fluxes of radio photons from conversion of axion-like particle dark matter in cosmic magnetic fields. We find that for axion-like particle masses around $10^{-6}$eV and effective coupling constants to photons $g_{a\gamma }\gtrsim 10^{-13}{\mathrm{GeV}}^{-1}$ strongly magnetized nearby stellar winds may give detectable line-like radio photon signals, although predicted fluxes are highly uncertain due to the poorly known structure of the magnetic fields. Nevertheless, it may be worth while to conduct a dedicated search in the direction of such sources. When combined with a possible future laboratory detection of axion-like dark matter such observations may in turn provide information on the small scale magnetic field structure in such objects.

9 revtex pages, comments welcome

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Cited by in corpus (25)

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• The radio telescope search for the resonant conversion of cold dark matter axions from the magnetized astrophysical sources
• Detecting the Stimulated Decay of Axions at Radio Frequencies
• Dark matter axion detection in the radio/mm-waveband
• Looking for Axion Dark Matter in Dwarf Spheroidals
• Gravitational Waves from First-Order Phase Transition in a Simple Axion-Like Particle Model
• Searching for Light in the Darkness: Bounds on ALP Dark Matter with the optical MUSE-Faint survey
• Behavior of axion-like particles in smoothed out domain-like magnetic fields
• Extragalactic photon--axion-like particle oscillations up to 1000 TeV
• Stellar Disruption of Axion Miniclusters in the Milky Way
• Axion-like Particles Implications for High-Energy Astrophysics
• Radio Line Properties of Axion Dark Matter Conversion in Neutron Stars
• Detecting Axion Stars with Radio Telescopes
• Cosmic implications of a low-scale solution to the axion domain wall problem
• Dipole Radiation and Beyond from Axion Stars in Electromagnetic Fields
• Axion configurations around pulsars
• Probing Axions via Light Circular Polarization and Event Horizon Telescope
• Probing $\mu$eV ALPs with future LHAASO observation of AGN $\gamma$-ray spectra
• Constraining Axion-Like Particles Dark Matter in Coma Berenices with FAST
• Searching for relativistic axions in the sky
• Scanning the landscape of axion dark matter detectors: applying gradient descent to experimental design
• Axions in Andromeda: Searching for Minicluster -- Neutron Star Encounters with the Green Bank Telescope
• Axion-like particle searches with MeerKAT and SKA
• Axion-Photon Conversion in Neutron Star Magnetospheres: The Role of the Plasma in the Goldreich-Julian Model
• An introduction to axions and their detection