An X-ray Spectroscopic Search for Dark Matter in the Perseus Cluster with Suzaku

Understand

We present the results from deep Suzaku observations of the central region of the Perseus cluster.

• Bulbul et al.
• (2014) reported the detection by XMM-Newton instruments of an unidentified X-ray emission line at an energy around 3.5keV in spectra for the Perseus and other clusters.
• They argued for a possibility of the decay of sterile neutrino, a dark matter candidate.