Recent Chandra and Newton observations indicate that there are two-temperature components ( T \sim 8 keV , 0.8 keV ) of the diffuse x-rays emitted from deep inside the center of Milky Way .
We show that this can be explained by the existence of sterile neutrinos , which decay to emit photons that can be bound-free absorbed by the isothermal hot gas particles in the center of Milky Way .
This model can account for the two-temperature components naturally as well as the energy needed to maintain the \sim 8 keV temperature in the hot gas .
The predicted sterile neutrino mass is between 16-18 keV .