black holesgeneral relativitygeometry/ geometryKerr-Newman ergosurfaceGaussian curvatureblack holeangular momentumelectric chargepolar cupsThe sign of the Gaussian curvature of the ergosurface of a Kerr-Newman black hole depends on the amounts of the angular momentum and electric charge of the black ...
horizon radii product, entropy product, and irreducible mass product of the event horizon and Cauchy horizon are universal, the surface gravity product, the surface temperature product and the Komar energy product of the said horizons do not seem to be universal for Kerr–Newman black hole spaceti...
coordinate invariant characterisation of the sta tionary limit and event horizon for Kerr black holes and subsequent seminal work on quasi-normal modes of black holes have passed on to become the starting points for detailed mathematical investigations on the nature of black holes. He later worke...
These results depend onlyweakly on the eccentricity of the orbit or the BH's spin.doi:10.1103/PhysRevD.75.042003Leor BarackCurt CutlerBarack, L., and Cutler, C., "Using LISA EMRI sources to test off-Kerr deviations in the geometry of massive black holes", Phys. Rev. D, 75, 042003, ...
Kerr geometryKerr-Newman solutionPosition operatorGeonString theoryTwistorKerr theoremComplex sourceDirac electron theory and QED do not take into account gravitational field, while the corresponding Kerr-Newman solution with parameters of electron has very strong stringy, topological and non-local action ...
(Fig.S2). The geometry of the low density anomalies identified from density cross-section and corresponding isosurface model depends on the parameters used during inversion as well as sparsity of gravity data (Supplementary Fig.S4). New broadband (~10–2–103s bandwidth) MT data20was combined ...
This is quite different from a pure TI film, where the fine structure con- stant relates with the Kerr and Faraday rotation angle24,25. Though our numerical calculations are based on TI/SiO2 multi- layer structures, we have to emphasize that the mechanism presented here is very general. The...
The structure of the paper is as follows: In Section 2, we describe Kerr black holes as particle accelerators. In particular, we detail the effect of the magnetic fields in driving charged particles. In Section 3, we discuss the accretion mechanism while considering the accretion fluid dynamics...
By modifying the geometry of each reflective coding particle, the corresponding phase response can be obtained. In order to obtain uniform field intensities, the GSW retrieval algorithm was utilized to extract the coding masks of the coding meta-holograms, and the imaging efficiency and the root-...
Thereafter the metric exterior Section 1 Introduction F-1 to the horizon of the spinning black hole will be the Kerr metric used in this project. However, not all spinning black holes are isolated; many are surrounded by other matter attracted to them. The inward-swirling mass of a resulting...