Modulation Sensitive Search for Non-Virialized Dark-Matter Axions

Abstract

Non-virialized dark-matter axions may be present in the Milky Way halo in the form of low-velocity-dispersion flows. The Axion Dark Matter eXperiment performed a search for the conversion of these axions into microwave photons using a resonant cavity immersed in a strong, static magnetic field. The spread of photon energy in these measurements was measured at spectral resolutions of the order of 1 Hz and below. If the energy variation were this small, the frequency modulation of any real axion signal due to the orbital and rotational motion of the Earth would become non-negligible. Conservative estimates of the expected signal modulation were made and used as a guide for the search procedure. The photon frequencies covered by this search are 812$-$852 and 858$-$892 MHz, which correspond to an axion mass of 3.36$-$3.52 and 3.55$-$3.69 μeV. No axion signal was found, and limits were placed on the maximum local density of non-virialized axions of these masses.

arXiv comment12 pages, 12 figures

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Cited by in corpus (15)

• A Search for Invisible Axion Dark Matter with the Axion Dark Matter Experiment
• Invisible Axion Search Methods
• Dark photon limits: a handbook
• Piezoelectrically Tuned Multimode Cavity Search for Axion Dark Matter
• ADMX SLIC: Results from a Superconducting LC Circuit Investigating Cold Axions
• Inferred Evidence For Dark Matter Kinematic Substructure with SDSS-Gaia
• Axion Dark Matter eXperiment: Run 1B Analysis Details
• Axion astronomy with microwave cavity experiments
• Axion Dark Matter eXperiment: Detailed Design and Operations
• Directional axion detection
• A dark matter telescope probing the 6 to 60 GHz band
• Sensitivity of Proposed Search for Axion-induced Magnetic Field using Optically Pumped Magnetometers
• Search for the Sagittarius Tidal Stream of Axion Dark Matter around 4.55 $\mu$eV
• Non-Virialized Axion Search Sensitive to Doppler Effects in the Milky Way Halo
• Direct detection signatures of a primordial Solar dark matter halo