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Production and detection of an axion dark matter echo

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arxiv 1902.00114 v2 pith:JD4CROKJ submitted 2019-01-31 hep-ph astro-ph.GAhep-ex

classification hep-phastro-ph.GAhep-ex
keywords axiondarkmatterechoradiationdetectionelectromagneticangular
verification ladder T0 review T1 audit T2 compute T3 formal

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Electromagnetic radiation with angular frequency equal to half the axion mass stimulates the decay of cold dark matter axions and produces an echo, i.e. faint electromagnetic radiation traveling in the opposite direction. We propose to search for axion dark matter by sending out to space a powerful beam of microwave radiation and listening for its echo. We estimate the sensitivity of this technique in the isothermal and caustic ring models of the Milky Way halo, and find it to be a promising approach to axion, or axion-like, dark matter detection.

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  1. Gravitational wave and dark matter from Axion-Higgs string

    hep-ph 2024-12 conditional novelty 5.0 of 10

    Lattice simulations show axion and axion-Higgs strings produce gravitational waves too weak for current pulsar timing arrays once dark matter overproduction is taken into account.

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