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The Dynamics of Collapsing Monopoles and Regular Black Holes
A black hole thin shell magnetic monopoles dynamic static configuration high energy laser
2014/12/22
We study the formation and stability of regular black holes by employing a thin shell approximation to the dynamics of collapsing magnetic monopoles. The core deSitter region of the monopole is matche...
Entropy of extremal black holes from entropy of quasiblack holes
quasiblack holes black holes extremal horizon entropy thermodynamics
2010/12/20
The entropy of extremal black holes (BHs) is obtained using a continuity argument from extremal quasiblack holes (QBHs). It is shown that there exists a smooth limiting transition in which (i) the sys...
Solar System tests of Hořava-Lifshitz black holes
Solar System Hoř ava-Lifshitz black holes
2010/3/18
In the present paper we consider the possibility of observationally testing Horava gravity at the scale of the Solar System, by considering the classical tests of general relativity (perihelion preces...
17-May-2007，LIVERMORE, Calif. Astronomers have discovered the exact location and makeup of a pair of supermassive black holes at the center of a collision of two galaxies more than 300 million light y...
Adaptive optics pinpoints 2 supermassive black holes in colliding galaxies
optics black holes
2007/5/21
17-May-2007，SANTA CRUZ, CA--Astronomers have used powerful adaptive optics technology at the W. M. Keck Observatory in Hawaii to reveal the precise locations and environments of a pair of supermassive...
High Overtones of Dirac Perturbations of a Schwarzschild Black Hole and the Area Spectrum of Quantum Black Holes
Dirac Perturbations a Schwarzschild Black Hole the Area Spectrum Quantum Black Holes
2010/10/18
We find high overtones of the Dirac quasi-normal (QN) spectrum of a Schwarzschild black hole (Sbh), by Leaver’s method. At high overtones, the spacing of the imaginary part of the QN spectrum is equid...