Durham E-Theses Probing the nature of dark matter with small-scale cosmology: A new estimate of the satellite galaxy complement of the Milky Way NEWTON, OLIVER,JAMES How to cite: NEWTON, OLIVER,JAMES (2019) Probing the nature of dark matter with small-scale cosmology: A new estimate of the satellite galaxy complement of the Milky Way, Durham theses, Durham University. Available at Durham E-Theses Online: http://etheses.dur.ac.uk/13312/ Use policy This work is licensed under a Creative Commons Attribution Share Alike 3.0 (CC BY-SA) Academic Support Oce, Durham University, University Oce, Old Elvet, Durham DH1 3HP e-mail:
[email protected] Tel: +44 0191 334 6107 http://etheses.dur.ac.uk 2 Probing the nature of dark matter with small-scale cosmology A new estimate of the satellite galaxy complement of the Milky Way Oliver Newton A Thesis presented for the degree of Doctor of Philosophy Institute for Computational Cosmology Ogden Centre for Fundamental Physics Department of Physics Durham University United Kingdom August 2019 Probing the nature of dark matter with small-scale cosmology A new estimate of the satellite galaxy complement of the Milky Way Oliver Newton Submitted for the degree of Doctor of Philosophy August 2019 Abstract: The standard model of cosmology has been enormously successful both at reproducing many observed properties of the Universe, and at predicting others. Despite this success one of its key components, a dark matter particle, has not been observed in targeted searches or indirect detection experiments. In addition, a number of discrepancies have arisen between observational proxies of DM structure and the small-scale predictions of this leading cosmological model, challenging its status as the standard paradigm.