Results 91 to 100 of about 713,825 (278)
Probing the formation of the seeds of supermassive black holes with gravitational waves
, 2018 The existence of black holes in the intermediate mass interval between one hundred and ten thousand solar masses, filling the gap between the stellar and the supermassive black holes is a key prediction to explain the origin of luminous QSOs at redshifts
Colpi, Monica
core +1 more source
D=5 Einstein-Maxwell-Chern-Simons Black Holes [PDF]
, 2005 5-dimensional Einstein-Maxwell-Chern-Simons theory with Chern-Simons coefficient $\lambda=1$ has supersymmetric black holes with vanishing horizon angular velocity, but finite angular momentum.
F. R. Tangherlini +3 more
core +1 more source
Journal of High Energy Physics, 2019 Abstract We show that in asymptotically free mimetic gravity with limiting curvature the black hole singularity can be resolved and replaced by a static patch of de Sitter space. As a result of Hawking evaporation of these non-singular black holes, there remain stable remnants with vanishing Hawking temperature.
Ali H. Chamseddine +2 more
openaire +4 more sources
Advanced Functional Materials, EarlyView.Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida +16 more
wiley +1 more source
New Estimates of the Spin and Accretion Rate of the Black Hole M87*
The Astrophysical Journal LettersIn this Letter, we use the imaging results of M87* from the Event Horizon Telescope (EHT) to calculate the rotational velocity of the inner edge of the accretion disk and find a value of ∼0.14 c .
Michael Drew +4 more
doaj +1 more source
Throat quantization of the Schwarzschild-Tangherlini(-AdS) black hole
EPJ Web of Conferences, 2018 By the throat quantization pioneered by Louko and Mäkelä, we derive the mass and area/entropy spectra for the Schwarzschild-Tangherlini-type asymptotically flat or AdS vacuum black hole in arbitrary dimensions. Using the WKB approximation for black holes
Maeda Hideki
doaj +1 more source
Can black holes be torn up by phantom dark energy in cyclic cosmology?
, 2009 Infinitely cyclic cosmology is often frustrated by the black hole problem. It has been speculated that this obstacle in cyclic cosmology can be removed by taking into account a peculiar cyclic model derived from loop quantum cosmology or the braneworld ...
A. Ashtekar +28 more
core +1 more source
New Worlds in Astroparticle Physics, 2006 13 pages, 9 Figures, ReVTeX4. Based on a talk delivered at the Fifth Meeting on New Worlds in Astroparticle Physics (Faro, Portugal, 8-10 January 2005).
openaire +2 more sources
Advanced Functional Materials, EarlyView.A self‐sustaining solar photoelectrochemical cell (SS‐PEC) is developed to recover uranium from aqueous UO22+ with concurrent organic oxidation and electricity production. The monolithical photoanode directly captures electrons from organic compounds, leading to the oxidation of organic compounds and the decomposition of uranium‐organic complexes ...
Yumei Wang +7 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Multifunctional atomic layer deposited coatings and interface treatments enhance direct solar water splitting on GaAs/GaInP tandem cells. Optimized TiO2/Pt nanoparticle bilayers ensure durability and catalytic efficiency with minimal optical losses, while H2 plasma pretreatments maximize photovoltage and interfacial charge extraction.
Tim F. Rieth +8 more
wiley +1 more source