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Dissertations / Theses on the topic 'Calculation of black hole'

Author: Grafiati

Published: 4 June 2025

Last updated: 15 July 2025

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1

Nielsen, Alex. "Black Hole Horizons and Black Hole Thermodynamics." Thesis, University of Canterbury. Physics and Astronomy, 2007. http://hdl.handle.net/10092/1363.

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This work investigates how black holes can be described in terms of different definitions of horizons. Global definitions in terms of event horizons and Killing horizons are contrasted with local definitions in terms of trapping horizons and dynamical horizons. The discussion is framed in the context of the laws of black hole thermodynamics.

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2

Galstyan, Irina. "Black-Hole Universe." Licentiate thesis, Stockholms universitet, Fysikum, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-149311.

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In this contribution, we have constructed new analytical solutions for initial data of the Einstein equations. Such solutions are valuable for gaining a better understanding of problems involving strong gravitational and/or electromagnetic interactions in general relativity. In this process, we have examined an inhomogeneous cosmological model consisting a lattice of regularly arranged, charged black holes with initial data corresponding to the maximum expansion of a cosmological solution. We have also refined the method in such a way that the values of the mass and charge of the sources can b

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3

Ross, Simon Frederick. "Black hole pair creation." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627545.

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4

Hayakawa, Tomoyasu. "Black-Hole forming Supernovae." Kyoto University, 2020. http://hdl.handle.net/2433/253091.

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5

Chung, Hyeyoun. "Exploring Black Hole Dynamics." Thesis, Harvard University, 2014. http://nrs.harvard.edu/urn-3:HUL.InstRepos:14226081.

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This thesis explores the evolution of different types of black holes, and the ways in which black hole dynamics can be used to answer questions about other physical systems. We first investigate the differences in observable gravitational effects between a four-dimensional Randall-Sundrum (RS) braneworld universe compared to a universe without the extra dimension, by considering a black hole solution to the braneworld model that is localized on the brane. When the brane has a negative cosmological constant, then for a certain range of parameters for the black hole, the intersection of the bl

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6

Martínez, Montero Marina. "Studies of Black Hole Horizons." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/396271.

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This thesis has focused entirely on classical and thermodynamical aspects of black hole physics. We have developed four different projects involving different kinds of black holes. 1 BLACK BRANES IN A BOX Neutral black branes with extended horizons are dynamically unstable to long wavelength perturbations along their horizons; this instability is known as the Gregory-Laflamme instability. In some regimes, the dynamics of black branes can be captured by an effective hydrodynamic description. We have studied the effective hydrodynamics of neutral black branes inside a cylindrical cavity to i

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7

Costa, Joao Lopes. "On black hole uniqueness theorems." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.514963.

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8

Morsink, Sharon Marijke. "The generic black hole singularity." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq21606.pdf.

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9

Klein-Wolt, Marc. "Black hole X-ray binaries." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/91386.

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10

Ahmadi, Morteza, and University of Lethbridge Faculty of Arts and Science. "Aspects of black hole physics." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2006, 2006. http://hdl.handle.net/10133/386.

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In this thesis, aspects of the physics of black holes are reviewed and new results in black hole thermodynamics are presented. First, general black hole solutions of Einstein’s equations of general relativity are mentioned and a proof of conservation law of energy and momentum in general relativity is presented. Aspects of the laws of black hole mechanics and Hawking radiation are then studied. Two proposals which attempt to explain the origin of black hole entropy (the brick wall model and entanglement entropy) are then discussed. Finally, some recent work related to the possible production a

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11

Kolehmainen, Mari Johanna. "The black hole spin controversy." Thesis, Durham University, 2012. http://etheses.dur.ac.uk/5894/.

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Astrophysical black holes are the simplest possible objects. They are completely described by only two parameters in general relativity, their mass and the specific angular momentum, spin. The spin is a fundamental characteristic of a black hole, but unlike mass it leaves a mark on space-time only very close to the event horizon, and is therefore more difficult to measure. The observational relevance of the spin comes from the fact that it sets the size scale of the last stable orbit around the accreting black hole, dragging the accretion disc farther in the faster it spins. Black hole spin is

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12

Sung, Shih-Ta. "Black hole entropy and models." Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4677/.

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No universally accepted statistical explanation of black hole entropy exists up to now, therefore, it is worth another try. Admittedly, black hole entropy does not have to have a statistical origin. If the "black hole entropy" is called "black hole index" instead, someone might be lured to give it an economic explanation. Nonetheless, the only way to justify one's claim about the statistical origin of black hole entropy is to compute it statistically. This is the motivation for the construction of black hole models. In chapter 1, I first review the four laws of classical black hole mechanics w

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13

Galfard, Christophe Georges Gunnar Sven. "Black hole information & branes." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614253.

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14

Kolishetty, Kiran. "Quantum properties of black hole." Thesis, Lancaster University, 2014. http://eprints.lancs.ac.uk/71783/.

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In this research report I would like to present some of the results obtained based on the published research, it is on the analogue model of Bose Einstein condensate of gravitons. In my investigation with different approach I could reach similar conclusion for Schwarzschild radius which is derived for Bose Einstein condensate of N-gravitons . I could calculate the pressure inside the condensed black hole. It is found that the Bogoliubov dispersion relation for the elementary excitations of the weakly-interacting N-gravitons is shown to hold for the case of the weakly-interacting Graviton gas o

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15

Fontana, Weslei Bernardino. "S-AdS Black Hole Thermodynamics." Universidade Estadual de Londrina. Centro de Ciências Exatas. Programa de Pós-Graduação em Física, 2018. http://www.bibliotecadigital.uel.br/document/?code=vtls000217827.

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Durante os últimos 50 anos, a pesquisa acerca da teoria de buracos negros em relatividade geral trouxe luz para a existência de uma forte relação entre gravitação, termodinâmica e teoria de campos. Uma das partes mais importantes dessa conexão entre as teorias é a termodinâmica de buracos negros, que nos diz que algumas das leis que regem a mecânica de buracos negros são simplesmente as leis usuais da termodinâmica aplicada à um sistema com um buraco negro. O intuito deste trabalho é fazer uma revisão sobre o que se conhece atualmente acerca do assunto. Em especial, aplicado à teoria de buraco

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16

Kawaguchi, Kyohei. "Black Hole-Neutron Star Merger -Effect of Black Hole Spin Orientation and Dependence of Kilonova/Macronova-." 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225394.

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17

Giardino, Serena. "Corpuscular description of black hole interiors." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18059/.

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The motivation from this work stems from the idea of Dvali and Gomez that the end-state of the gravitational collapse is a Bose-Einstein condensate at the critical point, constituted by a large number of soft, off-shell and maximally packed gravitons. This approach goes beyond the semiclassical picture and considers black holes as purely quantum objects. The result is a model without a central singularity that expresses crucial quantities, such as the self-coupling constant of gravitons and the mass of the black hole in terms of only one parameter, the number of gravitons N, and is able to acc

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18

Luna, Raimon. "New Strategies for Black Hole Physics." Doctoral thesis, Universitat de Barcelona, 2020. http://hdl.handle.net/10803/669583.

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In this thesis we apply new approaches and develop new techniques to address various issues related to fundamental aspects of modern gravitational theory and black holes. We study the behavior of black branes in the large D approximation, that is, we consider a space with a very large number of dimensions. This approach allows us to obtain a set of very simple equations that capture many of the physical phenomena of gravity. This technique uses the fact that the gravitational field around a massive object decays faster the higher the dimension, so when you take the very large D limit it bec

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19

Pidokrajt, Narit. "Information geometries in black hole physics." Doctoral thesis, Stockholms universitet, Fysikum, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-29365.

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In this thesis we aim to develop new perspectives on the statistical mechanics of black holes using an information geometric approach (Ruppeiner and Weinhold geometry). The Ruppeiner metric is defined as a Hessian matrix on a Gibbs surface, and provides a geometric description of thermodynamic systems in equilibrium. This Ruppeiner geometry exhibits physically suggestive features; a flat Ruppeiner metric for systems with no interactions i.e. the ideal gas, and curvature singularities signaling critical behavior(s) of the system. We construct a flatness theorem based on the scaling property of

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20

Okawa, Hirotada. "Black Hole Collision in Higher Dimensions." 京都大学 (Kyoto University), 2012. http://hdl.handle.net/2433/157755.

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21

Mukohyama, Shinji. "The Origin of Black Hole Entropy." 京都大学 (Kyoto University), 1999. http://hdl.handle.net/2433/181949.

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22

Ryan, Geoffrey. "Numerical Simulations of Black Hole Accretion." Thesis, New York University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10261761.

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<p> Accretion on to black holes powers some of the most luminous objects in the universe. In this thesis I present a series of works aimed at constraining the properties of black hole accretion in a variety of astrophysical systems. Numerical methods are vital for studying the multi-scale and non-linear physics of these systems. First I introduce <tt>DiscoGR,</tt> the first implementation of numerical general relativistic magnetohydrodynamics on a moving mesh. <tt> DiscoGR</tt> is capable of efficiently and accurately simulating highly supersonic thin accretion disks, the objects responsible f

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23

Prat, Alain. "Merging black hole and cosmological horizons." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/52470.

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This thesis investigates the merging of horizons which occurs when a black hole crosses a cosmological horizon. We study the simplest spacetime which has both a black hole and cosmological horizon, namely Schwarzschild-deSitter (SdS) spacetime. First we develop a new coordinate system for SdS spacetime, which allows us to properly illustrate and analyze the merging of horizons. We then use a combination of numerical and analytical methods to study the structure of the merging horizons, including the null generators which make up the horizon, as well as the presence of caustic points on the hor

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24

Ried, Katja [UNESP]. "Can entanglement explain black hole entropy?" Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/91804.

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Made available in DSpace on 2014-06-11T19:25:29Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-11-10Bitstream added on 2014-06-13T18:28:53Z : No. of bitstreams: 1 ried_k_me_ift.pdf: 945643 bytes, checksum: 96fe05a885b68fc97682e8238f4ecf2c (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>When seeking inspiration for a future theory of quantum gravity, studying black holes is a promising ansatz, since they present us with several puzzles at the intersection of quantum theory and gravity. Am

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25

Hendy, Shaun. "Cosmic strings in black hole spacetimes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0007/NQ29046.pdf.

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26

Puri, Vinay. "Automated alerting for black hole routing." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Sep%5FPuri.pdf.

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Thesis (M.S. in Informationi Warfare and M.S. in Computer Science)--Naval Postgraduate School, September 2007.<br>Thesis Advisor(s): Xie, Geoffrey ; Fulp, J. D. "September 2007." Description based on title screen as viewed on October 25, 2007. Includes bibliographical references (p. 119-120). Also available in print.

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27

Taves, Timothy Mark. "Black Hole Formation in Lovelock Gravity." IOP Publishing, 2011. http://hdl.handle.net/1993/22179.

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Some branches of quantum gravity demand the existence of higher dimensions and the addition of higher curvature terms to the gravitational Lagrangian in the form of the Lovelock polynomials. In this thesis we investigate some of the classical properties of Lovelock gravity. We first derive the Hamiltonian for Lovelock gravity and find that it takes the same form as in general relativity when written in terms of the Misner-Sharp mass function. We then minimally couple the action to matter fields to find Hamilton’s equations of motion. These are gauge fixed to be in the Painleve-Gullstrand co

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28

Chambers, Chris M. "Classical aspects of black hole physics." Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294892.

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29

Adams, N. "Symmetry restoration near a black hole." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372638.

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30

Farley, Andrew Nicholas St Jude. "Quantum amplitudes in black hole evaporation." Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620510.

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31

Dempsey, David. "Wave propagation on black hole spacetimes." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/18023/.

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This thesis studies the propagation of fundamental fields on black hole and black hole analogue spacetimes. We consider the scalar, electromagnetic, gravitational and Dirac fields, and their governing equations, in various scenarios. We initially consider an analogue gravity model, the draining bathtub vortex, that shares features with the Kerr black hole, such as a horizon and an ergoregion. We solve the wave equation approximately, via the eikonal approximation, and numerically, using the method of lines, and show that a point-like disturbance maps out the lightcone of the effective spacetim

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32

Ried, Katja. "Can entanglement explain black hole entropy? /." São Paulo : [s.n.], 2011. http://hdl.handle.net/11449/91804.

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Orientador: George Emanuel Avraam Matsas<br>Banca: Daniel Augusto Turolla Vanzella<br>Banca: Ernesto Galvão<br>Resumo: Não disponível<br>Abstract: When seeking inspiration for a future theory of quantum gravity, studying black holes is a promising ansatz, since they present us with several puzzles at the intersection of quantum theory and gravity. Among these is their entropy: although there are compelling arguments for its existence, its origin and statistical meaning remain a mystery. Previous work showed that at least some aspects of this phenomenon can be accounted for by the entanglement

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33

Licht, David. "Effective Dynamics of Black Hole Horizons." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/671802.

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In this thesis we present a new aspect pertaining to the eﬀective field theory of general relativity in the limit of a large number D of dimensions. We demonstrate that the theory initially developed to capture the physics of asymptotically flat branes also contains a new family of localized solutions that can be identified with higher dimensional black holes such as the Schwarzschild-Thangerlini or the Myers-Perry black holes in the limit of a large number of spacetime dimensions. Using this technique we have explored several new aspects of these black hole solutions. We show that the eﬀe

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34

Rubens, William. "On the black hole/qubit correspondence." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9594.

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We present the evidence for and intriguing black hole/qubit correspondence. This correspondence will map the entanglement classification of three and four qubits over to the BPS and extremal classification of black holes in the STU model. We will start by looking at BPS black holes and use a variety of means to classify them and calculate their orbits. We will discover that three qubits, or more accurately, three real qubits will exhibit exactly the same structure as the black holes. This will allow us to identify the entropy of the black hole with the entanglement of the qubits. A mathematica

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35

Marr, Sarah Kathryn. "Black hole entropy from causal sets." Thesis, Imperial College London, 2007. http://hdl.handle.net/10044/1/11818.

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36

OROFINO, Maria Carmela. "Black Hole Accretion in Primordial Galaxies." Doctoral thesis, Scuola Normale Superiore, 2020. http://hdl.handle.net/11384/97654.

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Supermassive black holes (SMBHs) with masses up to 1010M⊙ are thought to power the emission from quasars and Active Galactic Nuclei. Surprisingly, these extremely massive, compact objects are already in place within the first billion years from the Big Bang, or redshift z ≥ 6. In addition, a tight relation between the stellar and central black hole mass in galaxies has been established locally. The SMBH origin, evolution and relation to the host galaxy are key open problems in modern cosmology and astrophysics. They are the main subject of this Thesis. As far as the origin is concerned, the m

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37

HOSSEINI, SEYEDMORTEZA. "Black hole microstates and supersymmetric localization." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2018. http://hdl.handle.net/10281/198974.

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L'argomento di questa tesi è lo studio dell'origine dell'entropia di Bekenstein-Hawking per una classe di buchi neri supersimmetrici in quattro e cinque dimensioni in teoria delle stringhe o M teoria. Ingredienti importanti di questa analisi sono l'olografia e la localizzazione supersimmetrica. Per teorie di campo supersimmetriche con almeno quattro supercariche reali, l'integrale sui cammini euclideo su [Sigma](g) x T**n (n=1,2) può essere calcolato usando il metodo della localizzazione supersimmetrica. L'integrale sui cammini viene ridotto a un modello di matrici che dipende da flussi ma

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38

Vika, Marina. "Supermassive black holes : the local supermassive black hole mass function." Thesis, University of St Andrews, 2012. http://hdl.handle.net/10023/2553.

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Over recent years there has been an increase of the number of secure supermassive black hole (SMBH) detections. These SMBH measurements have lead astronomers to establish well defined empirical relationships between the SMBH mass and some of the properties of the host galaxy. The number of galaxies with SMBH mass measurements is currently limited to about 100. One approach of expanding the study of the SMBH is to use the empirical relations for estimating M[subscript(bh)] for larger samples of galaxies. The investigation of the SMBH population (or SMBH mass function) for large sample of galaxi

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39

Johnson, Thomas Leo. "Black Hole: The Role of Black Aesthetics in Science Fiction." Wright State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=wright1180786498.

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40

Mohaupt, Thomas Michael. "Black hole entropy, special geometry and strings." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=961706074.

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41

Buri´c, Maja, Voja Radovanovi´c, and rvoja@rudjer ff bg ac yu. "Quantum Corrections for (Anti)--Evaporating Black Hole." ESI preprints, 2000. ftp://ftp.esi.ac.at/pub/Preprints/esi917.ps.

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42

Koppitz, Michael. "Numerical studies of Black Hole initial data." Phd thesis, Universität Potsdam, 2004. http://opus.kobv.de/ubp/volltexte/2005/134/.

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Diese Doktorarbeit behandelt neue Methoden der numerischen Evolution von Systemen mit binären Schwarzen Löchern. Wir analysieren und vergleichen Evolutionen von verschiedenen physikalisch motivierten Anfangsdaten und zeigen Resultate der ersten Evolution von so genannten 'Thin Sandwich' Daten, die von der Gruppe in Meudon entwickelt wurden. <br /> Zum ersten Mal wurden zwei verschiedene Anfangsdaten anhand von dreidimensionalen Evolutionen verglichen: die Puncture-Daten und die Thin-Sandwich Daten. Diese zwei Datentypen wurden im Hinblick auf die physikalischen Eigenschaften während der Evolut

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43

Khan, Sebastian. "Numerical modelling of black-hole-binary mergers." Thesis, Cardiff University, 2016. http://orca.cf.ac.uk/93841/.

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The beginning of gravitational wave astronomy started on September 14th 2015 [13]. The event, GW150914, was so loud that the distinct morphological features indicative of the merger of two inspiraling black holes was di�cult to deny. The estimation of source parameters and parameterised tests of general relativity in the strong �eld regime require the use of gravitational waveform models that predict the inspiral, merger and ringdown of binary black holes according to general relativity. This thesis is focused on providing the gravitational wave community with an accurate model for the gravita

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44

Wang, Qingdi. "Black hole fluctuations and negative noise kernel." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/38141.

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In 2007, based on stochastic gravity, Bei-Lok Hu and Albert Roura claimed that black hole fluctuations grow and eventually become important when a black hole has evaporated for a sufficiently long period of time but well before the Planckian regime is reached. In this thesis, we investigate their derivation of the black hole fluctuations and propose two analogue examples to better understand the mechanism of large fluctuations. Our analysis clearly shows the classical nature of the large black hole fluctuations. On the other hand, to test the validity of stochastic gravity, we calculate the ce

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45

Sidhu, Steve. "Conformal field theory and black hole physics." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Physics and Astronomy, c2012, 2012. http://hdl.handle.net/10133/3109.

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This thesis reviews the use of 2-dimensional conformal field theory applied to gravity, specifically calculating Bekenstein-Hawking entropy of black holes in (2+1) dimensions. A brief review of general relativity, Conformal Field Theory, energy extraction from black holes, and black hole thermodynamics will be given. The Cardy formula, which calculates the entropy of a black hole from the AdS/CFT duality, will be shown to calculate the correct Bekenstein-Hawking entropy of the static and rotating BTZ black holes. The first law of black hole thermodynamics of the static, rotating, and charged-r

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46

Hobbs, Alexander Paul. "Supermassive black hole feeding in galactic nuclei." Thesis, University of Leicester, 2011. http://hdl.handle.net/2381/8997.

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In this thesis we present numerical and analytical models of supermassive black hole (SMBH) feeding, via deposition of gas, in galactic nuclei. Through simulations, we consider the environment of galactic centres, starting at sub-parsec scales within our own Milky Way, and moving upwards in scale and outwards in generality to scales of hundreds of parsecs in typical galaxies and finally to dark matter halos within which galaxies reside. We find that the stellar features observed in our own Galactic centre are likely explained by a collision between two molecular clouds at a distance of a few p

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47

Capitanio, Fiamma. "Transient black hole candidates observed with INTEGRAL." Thesis, University of Southampton, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438708.

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48

Cole, Michael. "Spinorial characterisations of rotating black hole spacetimes." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/53579.

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In this thesis, the implications of the existence of Killing spinors in a spacetime are investigated. In particular, it is shown that in vacuum and electrovacuum spacetimes a Killing spinor, along with some assumptions on the associated Killing vector in an asymptotic region, guarantees that the spacetime is locally isometric to a member of the Kerr or Kerr-Newman family. It is shown that the characterisation of these spacetimes in terms of Killing spinors is an alternative expression of characterisation results of Mars (Kerr) and Wong (Kerr-Newman) involving restrictions on the Weyl curvature

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49

Cáceres, Alejandro. "Electron dynamics in a black hole background." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614691.

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50

Park, Minkyu. "Black hole microstates with a new constituent." Kyoto University, 2018. http://hdl.handle.net/2433/232242.

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