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arXiv · 1403.1782

X-ray line signal from decaying axino warm dark matter

Ki-Young Choi·Osamu Seto
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Abstract

We consider axino warm dark matter in a supersymmetric axion model with R-parity violation. In this scenario, axino with the mass $m_\axino\simeq 7$ keV can decay into photon and neutrino resulting in the X-ray line signal at $3.5$ keV, which might be the origin of unidentified X-ray emissions from galaxy clusters and Andromeda galaxy detected by the XMM-Newton X-ray observatory.

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Ki-Young Choi, Osamu Seto. 2014-06-23. X-ray line signal from decaying axino warm dark matter. https://doi.org/10.1016/j.physletb.2014.06.008

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