Author(s): A. Boyarsky, J. Franse, D. Iakubovskyi, and O. Ruchayskiy
An x-ray line observed in the spectra of the Milky Way center is consistent with similar lines detected in other galaxies. The origin of this line is unknown, but its energy fits with x-ray emissions from dark matter decay seen in various theoretical models.
[Phys. Rev. Lett. 115, 161301] Published Wed Oct 14, 2015