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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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Black-hole ejecta by frame-dragging along the axis of rotation
van Putten,H P M Maurice +1 more
TL;DR: In this article, the authors derived a no-boundary mechanism for linear acceleration of magnetized matter along the axis of rotation of a high-mass black hole with rapid rotation, producing baryon-poor ejecta by gravitational spin-orbit coupling.
Posted Content
Multi-messenger emissions from Kerr black holes
van Putten,H P M Maurice +1 more
TL;DR: In this article, frame dragging is shown to be a universal causal agent for producing multi-messenger emissions, including high energy emissions produced by gravitational spin-orbit coupling along the axis of rotation and low energy emissions from surrounding matter via a torus magnetosphere.
Journal ArticleDOI
Effective spatial dimension of black holes and its implications
TL;DR: In this article, a critical phenomenon takes place in the extremal limit of a Kerr-Newman black hole, and several scaling laws hold among the critical exponents, when combined with the knowledge about the divergence of correlation length, the scaling laws predict that the effective spatial dimension of a black hole is 1.
Book ChapterDOI
Wheeler Wormholes and the Modern Astrophysics
TL;DR: In this paper, the authors considered the hypothesis that some active galactic nuclei and other compact astrophysical objects may be current or former entrances to wormholes and proposed various new models of the static wormholes including wormholes maintained mainly by an electromagnetic field.
Posted Content
Stationary models of relativistic magnetohydrodynamic jets
TL;DR: In this article, the authors considered the relativistic MHD wind equation and the effects of the Kerr metric on the acceleration of a cylindrically collimated jet with a finite radius and calculated the thermal optically thin X-ray spectrum for the innermost hot part of the jet.