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Black holes: The membrane paradigm
TLDR
In this article, the physics of black holes are explored in terms of a membrane paradigm which treats the event horizon as a two-dimensional membrane embedded in three-dimensional space, and a 3+1 formalism is used to split Schwarzschild space-time and the laws of physics outside a nonrotating hole.Abstract:
The physics of black holes is explored in terms of a membrane paradigm which treats the event horizon as a two-dimensional membrane embedded in three-dimensional space. A 3+1 formalism is used to split Schwarzschild space-time and the laws of physics outside a nonrotating hole, which permits treatment of the atmosphere in terms of the physical properties of thin slices. The model is applied to perturbed slowly or rapidly rotating and nonrotating holes, and to quantify the electric and magnetic fields and eddy currents passing through a membrane surface which represents a stretched horizon. Features of tidal gravitational fields in the vicinity of the horizon, quasars and active galalctic nuclei, the alignment of jets perpendicular to accretion disks, and the effects of black holes at the center of ellipsoidal star clusters are investigated. Attention is also given to a black hole in a binary system and the interactions of black holes with matter that is either near or very far from the event horizon. Finally, a statistical mechanics treatment is used to derive a second law of thermodynamics for a perfectly thermal atmosphere of a black hole.read more
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Short gamma-ray burst central engines
TL;DR: Recently, growing evidence connects the progenitor systems of the short-hard subclass of gamma-ray bursts (GRBs) to the merger of compact object binaries composed of two neutron stars (NSs) or of an NS and a black hole (BH).
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The case for black hole thermodynamics, Part I: phenomenological thermodynamics
TL;DR: In this article, the authors present a systematic and thorough presentation of the case for regarding black holes as thermodynamic systems in the fullest sense, aimed at students and non-specialists and not presuming advanced knowledge of quantum gravity.
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Radiation from a charged particle and radiation reaction reexamined
Abhinav Gupta,Thanu Padmanabhan +1 more
TL;DR: In this article, the electromagnetic fields of an arbitrarily moving charged particle and the radiation reaction on the charged particle using a novel approach were derived in an inertial frame and the original expression for this force, obtained by Dirac, can be rederived with much less computation and in an intuitively simple manner using their formalism.
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The structure of black hole magnetospheres — I. Schwarzschild black holes
Pranab Ghosh,Pranab Ghosh +1 more
TL;DR: In this paper, a multipolar scheme for describing the structure of stationary, axisymmetric, force-free black hole magnetospheres in the 3+1 formalism is introduced.
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Horizon quantum mechanics: A hitchhiker’s guide to quantum black holes
TL;DR: It is congruous with the quantum nature of the world to view the spacetime geometry as an emergent structure that shows classical features only at some observational level as discussed by the authors, and one can thus conceive the space manifold as a purely theoretical arena, where quantum states are defined, with the additional freedom of changing coordinates like any other symmetry.