Results 71 to 80 of about 944,215 (294)
The Astrophysical JournalJWST has revealed a population of low-luminosity active galactic nuclei at z > 4 in compact, red hosts (the “Little Red Dots,” or LRDs), which are largely undetected in X-rays.
Fabio Pacucci, Ramesh Narayan
doaj +1 more source
Are General Relativity and Teleparallel Gravity Theoretically Equivalent?
Philosophy of PhysicsTeleparallel gravity shares many qualitative features with general relativity, but differs from it in the following way: whereas in general relativity, gravitation is a manifestation of spacetime curvature, in teleparallel gravity, spacetime is (always)
James Owen Weatherall, Helen Meskhidze
doaj +1 more source
The radial distribution function reveals the underlying mesostructure of the AdS black hole
Journal of High Energy Physics, 2022 Based on the equations of state, one can infer the underlying interaction potentials among the black hole molecules in the case of Schwarzschild-AdS and charged AdS black holes.
Conghua Liu, Jin Wang
doaj +1 more source
Quantum black hole–white hole entangled states
Physics Letters B, 2022 We investigate the quantum deformation of the Wheeler–DeWitt equation of a Schwarzchild black hole. Specifically, the quantum deformed black hole is a quantized model constructed from the quantum Heisenberg–Weyl Uq(h4) group.
S. Jalalzadeh
doaj +1 more source
, 2002 43 pages, springer style, several ps files. to appear in the proceedings of the Tuebingen conference on conformal structure of space-time, J. Frauendiener, H.
openaire +2 more sources
Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology
Advanced Engineering Materials, EarlyView.We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham +7 more
wiley +1 more source
A note on black hole entropy, area spectrum, and evaporation
, 2010 We argue that a process where a fuzzy space splits in two others can be used to explain the origin of the black hole entropy, and why a "generalized second law of thermodynamics" appears to hold in the presence of black holes.
Landim, R. R., Silva, C. A. S.
core +1 more source
Advanced Engineering Materials, EarlyView.High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin +4 more
wiley +1 more source
Variability in Black Hole Accretion: Dependence on Rotational and Magnetic Energy Balance
The Astrophysical JournalMost general-relativistic magnetohydrodynamic simulations of black hole (BH) hot accretion flows are initialized with small rotating tori and produce stable jets with only small fluctuations.
Hyerin Cho, Ramesh Narayan
doaj +1 more source
Geometry of Higher-Dimensional Black Hole Thermodynamics
, 2006 We investigate thermodynamic curvatures of the Kerr and Reissner-Nordstr\"om (RN) black holes in spacetime dimensions higher than four. These black holes possess thermodynamic geometries similar to those in four dimensional spacetime.
C. W. Misner +5 more
core +1 more source