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 19 of 19 for “"Black hole physics"”.
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Semi-classical aspect of black hole physics
Semi-classical aspects of black hole physics are studied with particular emphasis on Hawking radiation and its derivation from tunnelling method techniques.
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Aspects of Black Hole Physics: Scalar Sources, Holography and Gravitational Wave Emission
We investigate several aspects of black hole physics. First, we consider models of gravity minimally coupled to scalar fields. We derive a new class of asymptotically flat black holes sourced by a non-trivial asymptotically massless scalar field; we discuss their relationship with known solutions …
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Time-symmetric integration of partial differential equations with applications to black hole physics
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Reflections on general relativity from perspectives of black hole physics and Hořava-Lifshitz gravity.
… of general relativity in fields as cosmology and black hold physics is summarized. Of the unsolved problem such as cosmology of the very early universe, dark matter and dark energy, black hole singularity and quantization of gravity, some are more fundamental, while some are more about the …
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Simulation of curved-space quantum field theories with two-component Bose-Einstein condensates: from black-hole physics to cosmology
… observation has lead to the beginning of a whole new field of research, nowadays known as Analog Gravity. Due to their superfluid character, intrinsic quantum nature and impressive experimental tunability, Bose-Einstein condensates represent one of the most promising platforms to realize …
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Black holes and solitons in string theory and M-theory: a low energy limit analysis
… corrections from superstring theory on black hole and soliton physics in different dimensions. The first order α ′−corrections derived from heterotic string theory, up to a field redefinition, lead to Einstein-dilaton-Gauss-Bonnet theory. We construct the first-order correction of …
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Nonsingular and deformed black holes Fundamental aspects and phenomenology
… most successful and enduring pillars of modern physics. Its predictions have consistently aligned with a vast array of observed phenomena within our Universe. However, the enigmatic nature of gravity persists, particularly when examined at both extremely short and exceedingly vast distances. In …
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Locally Tuneable Quantum Hamiltonians with Neutral Atoms in Optical Lattices
… explores how local driving can generate the same physics as black holes and demonstrates how to experimentally probe their features. This local modulation scheme is applicable to many different lattice geometries and can realise black hole physics in both one and two dimensions.
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General-relativistic magnetohydrodynamics simulations of black hole accretion disks: dynamics and radiative properties
… of studies in this thesis is to understand the black hole accretion process and predict its observational properties. The highly non-linear process involves a turbulent magnetized plasma in a general relativistic regime, thus making it hard to study analytically. We use numerical simulations, …
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Black hole masses and host galaxy properties in distant quasars from reverberation mapping surveys
Powered by accretion onto supermassive black holes (SMBHs), active galactic nuclei (AGNs) and quasars (the most luminous AGNs) are the keys to many outstanding questions in astronomy, including black hole (BH) demographics, BH-host galaxy (co)-evolution, and AGN feedback mechanisms. Reverberation …
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X-ray Studies of the Innermost Regions of Black Hole Accretion
… of my research on the X-ray spectra of accreting black holes. The content of this thesis can be broadly separated into two parts: Chapter 2-3 for stellar-mass black holes in X-ray binaries (XRBs) and Chapter 4-6 for supermassive black holes in active galactic nuclei (AGN). This work mainly focuses …
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Magnetic Field Evolution in Black Hole Accretion Disks and Relativistic Jets
Supermassive black holes (SMBHs) catalyse change in their host galaxies, mediated through the inflow and subsequent outflow of material through the massive body. While an SMBH does not—indeed, cannot—hold its own magnetic field, the material it interacts with, feeds upon, and expels outwards is …
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Dual active galactic nuclei within Romulus25
… nuclei (DAGN) trace the growth of supermassive black holes (SMBHs) during galaxy interactions, while also being an important electromagnetic precursor of SMBH mergers which are important for missions such as LISA. In this thesis, we aim to study the properties of DAGN within the Romulus25 …
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Radiative signatures of the jet launching region in astronomical objects
… jets are observed in a wide range of accreting black hole systems, from stellar-mass black holes in X-ray binaries (XRBs), to supermassive black holes in active galactic nuclei (AGN). However, despite decades of observational and theoretical research, the mechanism by which relativistic jets are …
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Crowded field spectroscopy and the search for intermediate-mass black holes in globular clusters
… whether globular clusters harbour massive black holes in their centres. These black holes would bridge the gap from stellar mass black holes, that represent the final stage in the evolution of massive stars, to supermassive ones that reside in the centres of galaxies. For this reason, they …