Probing a Mixed Dark Matter Scenario with the CLASS Code

The purpose of our research is to further understand the physical properties of dark matter. We present the physical constraints of a mixed dark matter scenario in which there is a mixture of both warm and cold dark matter. The warm dark matter in our model arises from a non-thermal decay of a heavy particle that occurs when the Universe is ~ 0.1-1 second old. By using the CLASS code, we have plotted the linear matter power spectrum of these scenarios and compared them to the observed matter power spectrum of Lyman-alpha forests. We find that warm dark matter with a mass of 50 GeV to 450 GeV can exist in fractional amounts, while warm dark matter with a mass of 460 GeV to 1 TeV can potentially comprise the entire dark matter population.