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The interior structure of astronomically realistic rotating black holes 1. Motivation and summary
The interior structure black holes
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2011/1/13
This paper motivates, summarizes, and discusses a new set of exact solutions for the interior structure of accreting, rotating black holes. The solutions are conformally stationary, axisymmetric, and...
Hawking-like radiation from evolving black holes and compact horizonless objects
Hawking-like radiation evolving black holes compact horizonless objects
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2010/12/27
Usually, Hawking radiation is derived assuming (i) that a future eternal event horizon forms, and (ii) that the subsequent exterior geometry is static. However, one may be interested in either conside...
Black holes in an ultraviolet complete quantum gravity
Black holes ultraviolet complete quantum gravity
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2011/1/13
In this Letter we derive the gravity field equations by varying the action for an ultraviolet complete quantum gravity. Then we consider the case of a static source term and we determine an exact bla...
Entanglement Entropy of Two Black Holes and Entanglement Entropic Force
Entanglement Entropy Two Black Holes Entanglement Entropic Force
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2010/12/23
We study the entanglement entropy, $S_C$, of a massless free scalar field on the outside region $C$ of two black holes $A$ and $B$ whose radii are $R_1$ and $R_2$ and how it depends on the distance, ...
Head-on collisions of unequal mass black holes in D=5 dimensions
Head-on collisions black holes
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2010/12/24
We study head-on collisions of unequal mass black hole binaries in D=5 space-time dimensions, with mass ratios between 1:1 and 1:4. Information about gravitational radiation is extracted by using the...
Electromagnetic extraction of energy from merging black holes
Electromagnetic extraction merging black holes
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2011/1/13
We calculate the evolution of the prompt intrinsic Poynting power generated by merging black holes. Orbiting black holes induce rotation of the space-time. In a presence of magnetic field supported by...
Acceleration of particles by black holes -- general explanation
particles black holes general explanation
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2010/12/24
We give simple and general explanation to the effect of unbound acceleration of particles by black holes. It is related to the fact that the scalar product of a timelike vector of the four-velocity o...
Thermodynamic Stability of Warped AdS3 Black Holes
Thermodynamic Stability Warped AdS3 Black Holes
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2010/12/24
We study the thermodynamic stability of warped black holes in three-dimensional topologically massive gravity. The spacelike stretched black hole is parametrized by its mass and angular momentum. We ...
Field theory aspects of cosmology and black holes
Field theory aspects of cosmology black holes
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2010/12/24
In this thesis we study some aspects of cosmology and black holes using field theoretic techniques. In second chapter, we present Lagrangian formulation for the non-relativistic as well as relativisti...
Black holes on gravitational instantons
Black holes gravitational instantons
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2010/12/24
In this paper, we classify and construct five-dimensional black holes on gravitational instantons in vacuum Einstein gravity, with RxU(1)xU(1) isometry. These black holes have spatial backgrounds whi...
Hidden Structures of Black Holes
Hidden Structures Black Holes
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2010/12/24
This thesis investigates two main topics concerning black holes in extensions of general relativity inspired by string theory. First, the structure of the equations of motion underlying black hole so...
On Attractor Flow and Small Black Holes
On Attractor Flow Small Black Holes
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2010/12/23
We study the attractor flow and near horizon geometry of two-charge small black holes in heterotic string theory. The Hessian of Sen's entropy function with respect to the moduli fields has standard ...
Space-Time Compactification, Non-Singular Black Holes, Wormholes and Braneworlds via Lightlike Branes
Space-Time Compactification Non-Singular Black Holes
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2010/12/24
We describe a concise general scheme for constructing solutions of Einstein-Maxwell-Kalb-Ramond gravity-matter system in bulk space-time interacting self-consistently with one or more (widely separate...
Can accretion disk properties observationally distinguish black holes from naked singularities?
black holes naked singularities
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2010/12/27
Naked singularities are hypothetical astrophysical objects, characterized by a gravitational singularity without an event horizon. Penrose has proposed a conjecture, according to which there exists a ...
Quantum Field Theory, Black Holes and Holography
Quantum Field Theory Black Holes Holography
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2010/12/24
These notes are an expanded version of lectures given at the Croatian School on Black Holes at Trpanj, June 21-25, 2010. The aim is to provide a practical introduction to quantum field theory in curv...