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arXiv · hep-ph/0509293

Detecting solar axions using Earth's magnetic field

Hooman Davoudiasl·Patrick Huber
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Abstract

We show that solar axion conversion to photons in the Earth's magnetosphere can produce an x-ray flux, with average energy \sim 4 keV, which is measurable on the dark side of the Earth. The smallness of the Earth's magnetic field is compensated by a large magnetized volume. For axion masses < 10^{-4} eV, a low-Earth-orbit x-ray detector with an effective area of 10^4 cm^2, pointed at the solar core, can probe the photon-axion coupling down to 10^{-11} GeV^{-1}, in one year. Thus, the sensitivity of this new approach will be an order of magnitude beyond current laboratory limits.

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Hooman Davoudiasl, Patrick Huber. 2005-10-20. Detecting solar axions using Earth's magnetic field. https://doi.org/10.1103/physrevlett.97.141302

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