Listening for Dark Photon Radio from the Galactic Centre

Abstract

Dark photon dark matter that has a kinetic mixing with the Standard Model photon can resonantly convert in environments where its mass $m_{A^{\prime }}$ coincides with the plasma frequency. We show that such conversion in neutron stars or accreting white dwarfs in the galactic centre can lead to detectable radio signals. Depending on the dark matter spatial distribution, future radio telescopes could be sensitive to values of the kinetic mixing parameter that exceed current constraints by orders of magnitude for $m_{A^{\prime }}\in \left(6\times 10^{-6},7\times 10^{-4}\right)$ eV.

arXiv comment27 pages, 9 figures, matched journal version

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Cited by in corpus (6)

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• Axion-Photon Conversion in 3D Media and Astrophysical Plasmas
• In Situ Measurements of Dark Photon Dark Matter Using Parker Solar Probe: Going beyond the Radio Window
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