Dark Matter Bounds From 21-cm Cosmology

Observing the redshifted 21-cm line of atomic hydrogen allows us to test the early universe during the first phases of cosmic structure formation. The detection of this signal could possibly shed light on various issues related to the formation of the first luminous sources and also give insights into Fundamental Physics. After reviewing the physics of the 21-cm signal, this thesis aims at understanding how to use this observation to set bounds on different particle dark matter scenarios. In particular, we reproduce the literature bounds for single component dark matter and then we derive bounds for a phenomenological inelastic dark matter model.