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arXiv · 2511.14845

Low-frequency radio telescopes sensitivity to light dark matter

Ruben Zatini·Francesca Calore·Pasquale Dario Serpico
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Abstract

Ground-based radio telescopes are routinely used to search for light dark matter (DM) candidates such as axion-like particles or dark photons. These instruments face however inherent limitations to push the searches to masses below $10^{-7}$ eV, due to the effect of the Earth's ionosphere. The extant and planned space- or Moon-based radio telescopes motivate this study: We systematically investigate their sensitivity to resonant conversion of light DM into radio signals from three solar system targets: the Sun, the Earth, and Jupiter. The perspectives are especially encouraging for dark photon searches using the Sun as a target, and for axion-like particles conversion in Jupiter's magnetosphere.

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Ruben Zatini, Francesca Calore, Pasquale Dario Serpico. 2025-11-18. Low-frequency radio telescopes sensitivity to light dark matter. https://doi.org/10.1103/pzqr-732x

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