Browsing Physics and Astronomy by Subject "dark matter"
Now showing items 1-8 of 8
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Advancing Techniques for Detecting Dwarf Satellite Populations Beyond the Local Group
(University of Waterloo, 2022-05-20)This thesis includes material from three papers that develop techniques for quantifying faint dwarf satellite populations outside the Local Group. Dwarf satellites are important for our understanding of small-scale structure ... -
Can Lensing Measure The Shape Of Dark Matter Halos?
(University of Waterloo, 2012-09-27)The aim of this project was to explore the shapes of dark matter halos using high resolution N-body simulations. One of the main aspects explored was how well the shape can be measured through weak lensing. To explore this, ... -
Cosmology with Cluster Structural Properties
(University of Waterloo, 2023-06-23)Galaxy clusters are massive objects composed of hundreds or thousands of galaxies, hot gas and an extended dark matter (DM) halo. They are the largest gravitationally bound structures in the Universe. As such, they result ... -
The Dependence of Halo Mass on Galaxy Size at Fixed Stellar Mass Using Weak Lensing
(University of Waterloo, 2017-04-24)Stellar mass has been shown to correlate with halo mass, but with significant scatter. The stellar mass-size and luminosity-size relationships of galaxies also show significant scatter in galaxy sizes for a fixed stellar ... -
Emergence and Phenomenology in Quantum Gravity
(University of Waterloo, 2010-07-09)In this thesis we investigate two approaches to quantum gravity. The first is the emergence of gravity from a discrete fundamental theory, and the second is the direct quantisation of gravity. For the first we develop tools ... -
The Evolution of Dark Matter Haloes in Mergers
(University of Waterloo, 2019-08-22)In the standard Λ-cold dark matter (ΛCDM) cosmological model, the present-day universe contains dominant components of dark energy (Λ) and cold dark matter (CDM). Fluctuations in the initial distribution of dark matter ... -
An Exploration of Clustering Statistics and Tidal Alignments in the Context of Group Catalogues
(University of Waterloo, 2021-10-04)The use of three-dimensional galaxy surveys and large cosmological simulations of the galaxy distribution has advanced our understanding of large-scale structure over the last few decades. At the forefront of this are ... -
The Shape of Dark Matter Haloes: Results from Weak Lensing
(University of Waterloo, 2020-09-25)Dark matter haloes are expected to have a triaxial shape, appearing elliptical in projection. Understanding the orientation of these dark matter haloes, and how they are aligned, has implications for theories of structure ...