Production and detection of an axion dark matter echo

Abstract

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.

arXiv comment5 pages, 2 figures, includes changes suggested by PRL referees

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Cited by in corpus (36)

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• On the Wondrous Stability of ALP Dark Matter
• How to suppress exponential growth -- on the parametric resonance of photons in an axion background
• Probing Cosmic-Ray Accelerated Light Dark Matter with IceCube
• Constraining the gravitational coupling of axion dark matter at LIGO
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• Geometric optics in the presence of axion-like particles in curved space-time
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• Axion electrodynamics: Green's functions, zero-point energy and optical activity
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• Listening for echo from the stimulated axion decay with the 21 CentiMeter Array
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• Axion electrodynamics: Energy-momentum tensor, and possibilities for experimental tests
• On the Galactic radio signal from stimulated decay of axion dark matter
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• Gravitational wave and dark matter from Axion-Higgs string
• Resonant enhancement of axion dark matter decay
• Echoes in multi-ALP scenarios
• Detecting the $\pi$-axiverse through parametric resonance