A general approach for testing non-cold dark matter at small cosmological scales

Abstract

We present a general approach for modelling the small-scale suppression in the linear matter power spectrum induced by the presence of non-cold dark matter. We show that the new parametrisation accurately describes a large variety of non-thermal scenarios, removing the need to individually test each of them. We discuss the first astrophysical constraints on its free parameters and we outline the next steps for pursuing a full statistical data analysis.

6 pages, 2 figures; to appear in the Proceedings of the 8th Young Researcher Meeting 2017

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Cited by in corpus (3)

• Constraining Dark Matter -- Dark Radiation interactions with CMB, BAO, and Lyman-$\alpha$
• Novel constraints on non-cold (non-thermal) Dark Matter from Lyman-$\alpha$ forest data
• Evaluating Lyman-$\alpha$ Constraints for General Dark-Matter Velocity Distributions: Multiple Scales and Cautionary Tales