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arXiv · 1509.00039

Heating up the Galaxy with Hidden Photons

Sergei Dubovsky·Guzmán Hernández-Chifflet
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Abstract

We elaborate on the dynamics of ionized interstellar medium in the presence of hidden photon dark matter. Our main focus is the ultra-light regime, where the hidden photon mass is smaller than the plasma frequency in the Milky Way. We point out that as a result of the Galactic plasma shielding direct detection of ultra-light photons in this mass range is especially challenging. However, we demonstrate that ultra-light hidden photon dark matter provides a powerful heating source for the ionized interstellar medium. This results in a strong bound on the kinetic mixing between hidden and regular photons all the way down to the hidden photon masses of order $10^{-20}$ eV.

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Sergei Dubovsky, Guzmán Hernández-Chifflet. 2018-10-18. Heating up the Galaxy with Hidden Photons. https://doi.org/10.1088/1475-7516%2F2015%2F12%2F054

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