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.
Results
Showing 1 to 20 of 1204 for “"Holes"”.
-
Holes and Other Stories
These stories represent a sampling of my creative work written while working on my master's. The stories contained here deal with the character's perceptions about relationships/life as the reality of the relationships/life comes crashing in. The narrators of these stories range from first person …
-
Demographics of supermassive black holes
Supermassive black holes are a fundamental component of the universe in general and of galaxies in particular. Almost every massive galaxy harbours a supermassive black hole (SMBH) in its center. Furthermore, there is a close connection between the growth of the SMBH and the evolution of its host …
-
Black holes with a twist
… on orbifolds of AdS3. Non-extremal BTZ black holes have been shown to oer a good opportunity to study closed string tachyon condensation, as there are tachyons in the winding sector even in superstring theory. We study extremal BTZ black holes, both M = 0 and M = J from a world sheet …
-
Gravitational waves: understanding black holes
This thesis concerns the use of observations of gravitational waves as tools for astronomy and fundamental physics. Gravitational waves are small ripples in spacetime produced by rapidly accelerating masses; their existence has been predicted for almost 100 years, but the first direct evidence of …
-
BLACK HOLES AND SOLUTION GENERATING TECHNIQUES
… like a collection of collinear static black holes or a chain of accelerating black holes, by choosing appropriately the multipole parameters of the field. Then, we consider the expanding bubbles of nothing as a background for multi-black hole and black ring solutions. The expanding behaviour …
-
Quantum Fields on BTZ Black Holes
… some aspects of Quantum Fields on BTZ black holes in 1+1 and 1+2 dimensions. More specifically, we study how a ground state in AdS spacetime becomes a thermal state when restricted to the exterior region of the BTZ black hole. This ground state is for the quantum linear real scalar field …
-
Advances in Simulating Binary Black Holes
… in the Universe, the mergers of two black holes. The success of gravitational-wave astronomy is inseparable from the advances in numerical relativity. Nowadays, numerical relativists are able to simulate the spacetimes of binary-black-hole mergers routinely and extract accurate waveforms …
-
Traversable Wormholes in Kerr Black Holes
Wormholes have long been a source of interest in general relativity, having been first coined by John Wheeler in 1957. More recently, wormholes have proven instrumental to our understanding of quantum gravity, with particular interest being given to Euclidean wormholes and their relevance to the …
-
Sympathetic detonation in long bore holes
Includes bibliographical references.
-
Radiation transport around Kerr black holes
… analyzing accretion processes around Kerr black holes. We begin in Chapter 1 with a brief historical summary of the major advances in black hole astrophysics over the past few decades. In Chapter 2 we present a detailed description of the ray-tracing code, which can be used to calculate the …
-
Optimal Reinforcement Learning with Black Holes
We introduce the Black Hole Reinforcement Learning problem, a previously unexplored variant of reinforcement learning in which we lose all turn information and all reward from trajectories that visit a particular subset of states. We assume awareness of the trajectory loss events, making this a …
-
Magnetic holes in the solar wind
We attempt to locate magnetic holes from several years of data collected from WIND and ACE spacecraft and use them to study some statistical properties of the magnetic holes.
-
Modular properties of higher spin black holes
… thermodynamic properties of higher spin black holes in AdS3. Through the conjectured Minimal Model/Higher Spin duality, the partition functions of such black holes should be equal to partition functions in the presence of chemical potentials in an appropriate dual 2d CFT. In the well-understood …
-
Dense stellar systems and massive black holes
… cardinal predictions of this theory are black holes. Massive, dark objects are found in the majority of galaxies. Our own galactic center very contains such an object with a mass of about four million solar masses. Are these objects supermassive black holes (SMBHs), or do we need alternatives? …
-
Time-dependent Accretion Flows onto Black Holes
Accretion onto compact objects plays a fundamental role in a number of astrophysical systems like active galactic nuclei (AGN) and black hole X-ray binaries (BHXB). The standard thin disk model fails to reproduce the spectra of these systems. They exhibit a blackbody-like component, generally …
-
Quasinormal Modes of Nearly Extremal Black Holes
… a bell; like many physical systems, black holes emit radiation as a response to perturbations. After a dynamical event, for example a black hole merger, the system is expected to relax to a stationary black hole solution. After sufficient time, the system can be treated as a perturbation to …
-
Black Holes, Galaxy Clusters and Gravitational Waves
… mass distribution of supermassive massive black holes (SMBHs) and Active Galactic Nuclei (AGNs) in three different environments. SMBHs and radio-AGNs are concentrated in dense environments. The Black Hole Fundamental Plane predicts X-ray properties for our SMBHs and unifies modes of AGN activity …
-
Paramagnetic Resonance and Relaxation of Trapped Holes
Made available in DSpace on 2015-05-12T17:12:13Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 5900486.PDF: 6385264 bytes, checksum: 5d88eecb19eaa7e216d63ac9e0517af0 (MD5) Previous issue date: 1958
Page 1 of 61