Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Gravitational Physics"”.
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The Problem of the Earth's Figure: Measurement, Theory, and Evidence in Physical Geodesy
… the story of a surprisingly difficult problem in gravitational physics: deriving and measuring the shape of our planet. Chapter 1 reconstructs the emergence of gravitational theories of planetary equilibrium figures and quantitative measurements of the Earth’s shape and surface gravity (c. …
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NEW GRAVITATIONAL INTERACTIONS IN COSMOLOGY —- FROM EFFECTIVE FIELD THEORY TO OBSERVATION
… conducted during my Ph.D. program on new gravitational interactions in cosmology, integrating theoretical advancements with observational evidence. I begin by examining a tension between measurements of Hubble constant made using data from radically different cosmic epochs, and proposing a …
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Tests of Gravity Theories with Pulsar Timing
… timing models, opens the door for testing gravitational physics in the strong gravity regime around these compact and dense objects. In this dissertation, based on gained timing data from observing campaigns with the Arecibo and Effelsberg telescopes, we will present an update to previous …
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Merging black hole binaries in gaseous environments: simulations in general-relativistic magnetohydrodynamics
… mergers are promising sources of detectable gravitational waves. If such a merger takes place in a gaseous environment, there is a possibility of a simultaneous detection of electromagnetic and gravitational radiation, as the stirring, shock heating and accretion of the gas may produce …
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Exploring Galaxy Clusters and Groups with Cosmological Simulations
Galaxy clusters are the largest gravitationally-bound objects in the Universe, their unparalleled size providing powerful leverage to probe large-scale structure growth and cosmology. At the same time, clusters and groups of galaxies represent unique astrophysical playgrounds in which galaxies …
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Numerical Modelling of the Dynamics and Gravitational Radiation of Compact Binaries in General Relativity
… the modern description of gravity. GR poses that gravitational physics should be described by matter fields existing in a curved space described by differential geometry. The Newtonian gravitational force is viewed as a fictitious force arising from curvature; on the flipside, matter and energy …
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Astrophysical tests of modified gravity
… hydrodynamics in the presence of an external gravitational field that includes the modifications of general relativity. Using this, we derive the equations governing the equilibrium structure of stars and show that unscreened stars are brighter and hotter than their screened counterparts owing …