Relevant papers

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Dark matter

1) Detecting dark matter substructures on small scales with fast radio bursts

2) A New Probe of Dark Matter and High-Energy Universe Using Microlensing

PBH

1) Snowmass2021 Cosmic Frontier White Paper: Primordial Black Hole Dark Matter

2) Primordial Black Holes as a dark matter candidate

Axions

1) Cosmology of axion dark matter, Ciaran O' Hare, 2024

2) Axion Cosmology, Marsh, 2016

3) Axion cosmology revisited, Wantz and Shellard, 2010

4) Effective degrees of freedom during the radiation era