Radio Signals from Axion Dark Matter Conversion in Neutron Star Magnetospheres

Abstract

We show that axion dark matter (DM) may be detectable through narrow radio lines emitted from neutron stars. The neutron star magnetosphere hosts a strong magnetic field and a plasma frequency that increases towards the neutron star surface. As the axions pass through the magnetosphere, they can resonantly convert into radio photons in a narrow region around the radius at which the plasma frequency equals the axion mass. The bandwidth of the signal is set by the small DM velocity dispersion far away from the neutron star. We solve the axion-photon mixing equations, including a full treatment of the magnetized plasma and associated anisotropic dielectric tensor, to obtain the conversion probability. We discuss possible neutron-star targets and how they may probe the QCD axion parameter space in the mass range of ~0.2-40 $\mu$eV.

arXiv comment7+8 pages, 1+4 figures

References in corpus (34)

• Asymptotic formulae for likelihood-based tests of new physics
• New CAST Limit on the Axion-Photon Interaction
• New experimental approaches in the search for axion-like particles
• A SQUID-based microwave cavity search for dark-matter axions
• A strong magnetic field around the supermassive black hole at the centre of the Galaxy
• Dielectric Haloscopes: A New Way to Detect Axion Dark Matter
• Broadband and Resonant Approaches to Axion Dark Matter Detection
• Cosmic Axion Spin Precession Experiment (CASPEr)
• The Dark Matter Halo of the Milky Way, AD 2013
• First results from a microwave cavity axion search at 24 micro-eV
• Formation and evolution of compact binaries in globular clusters: II. Binaries with neutron stars
• NuSTAR discovery of a 3.76-second transient magnetar near Sagittarius A*
• A Radio for Hidden-Photon Dark Matter Detection
• Revealing the Dark Matter Halo with Axion Direct Detection
• Made-to-Measure models of the Galactic Box/Peanut bulge: stellar and total mass in the bulge region
• Swift Discovery of a New Soft Gamma Repeater, SGR J1745-29, near Sagittarius A*
• Ab-initio pulsar magnetosphere: three-dimensional particle-in-cell simulations of axisymmetric pulsars
• The HAYSTAC Axion Search Analysis Procedure
• CAST solar axion search with 3^He buffer gas: Closing the hot dark matter gap
• The ROSAT All-Sky Survey Bright Source Catalogue
• Radio properties of the magnetar near Sagittarius A* from observations with the Australia Telescope Compact Array
• The radio telescope search for the resonant conversion of cold dark matter axions from the magnetized astrophysical sources
• Conversion of Dark matter axions to photons in magnetospheres of neutron stars
• Design and Operational Experience of a Microwave Cavity Axion Detector for the 20-100 micro-eV Range
• Observations of the Sagittarius Dwarf galaxy by the H.E.S.S. experiment and search for a Dark Matter signal
• Density and kinematic cusps in M54 at the heart of the Sagittarius dwarf galaxy: evidence for a 10^4 M_sun Black Hole?
• Future Directions in the Microwave Cavity Search for Dark Matter Axions
• Dynamical constraints on a dark matter spike at the Galactic Centre from stellar orbits
• Constraining the Spin-down of the Nearby Isolated Neutron Star RX J2143.0+0654
• Constraining the Spin-down of the Nearby Isolated Neutron Star RX J0806.4-4123, and Implications for the Population of Nearby Neutron Stars
• The central density cusp of the Sagittarius dwarf spheroidal galaxy
• New solar axion search in CAST with ${}^4$He filling
• Spectral Signatures of Photon-Particle Oscillations from Celestial Objects
• Nearby, Thermally Emitting Neutron Stars

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• Gravitational wave probes of dark matter: challenges and opportunities
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