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Full-Text Articles in Cosmology, Relativity, and Gravity
Weak Gravitational Lensing Analysis In Two Superclusters Of Galaxies, Sarah B. Rice
Weak Gravitational Lensing Analysis In Two Superclusters Of Galaxies, Sarah B. Rice
Electronic Theses and Dissertations
Observations of the Universe on very large scales have shown it to be filled with galaxy clusters and superclusters connected by walls and filaments of galaxies, with vast areas mostly devoid of luminous matter separating them. It is widely accepted that the amount of luminous matter does not provide the mass needed to hold galaxies and galaxy clusters together, and the nature of the missing "dark matter" is one of the most prominent astrophysical mysteries today. Since dark matter interacts with luminous matter gravitationally, it stands to reason that dark matter might organize itself in a similar manner to luminous …
First Steps In The Small-Scale Structure Formation In The Universe: The Emergence Of Galaxies, Da Bi
First Steps In The Small-Scale Structure Formation In The Universe: The Emergence Of Galaxies, Da Bi
Theses and Dissertations--Physics and Astronomy
Galactic morphology in the contemporary universe results from the convergence of a long list of physical processes, not all of them yet fully understood and quantified. The universe exhibits a hierarchical structure: galaxies grow being immersed in dark matter (DM) halos, which in turn are fed by diffuse and filamentary accretion. I use a suite of very high-resolution zoom-in cosmological simulations of galaxies in order to study the assembly of galaxies at high redshifts, z ≥ 2, to quantify the role of environment and of the parent DM halos in this procss. My models have been chosen to lie within …