Results 41 to 50 of about 162,795 (306)

Horizon replicas in black hole shadows

Nuclear Physics B
Recently, new exploratory channels have opened up for the physics of highly compact objects, such as gravitational waves and black hole shadows. Moreover, more precise analysis and observations are now possible in the physics of accretion around compact ...
D. Pugliese, H. Quevedo
doaj   +1 more source

Theoretical Physics Implications of the Binary Black-Hole Mergers GW150914 and GW151226 [PDF]

, 2016
The gravitational wave observations GW150914 and GW151226 by Advanced LIGO provide the first opportunity to learn about physics in the extreme gravity environment of coalescing binary black holes.
N. Yunes, Kent Yagi, F. Pretorius
semanticscholar   +1 more source

Braneworld black holes and entropy bounds

Physics Letters B, 2018
The Bousso's D-bound entropy for the various possible black hole solutions on a 4-dimensional brane is checked. It is found that the D-bound entropy here is apparently different from that of obtained for the 4-dimensional black hole solutions.
Y. Heydarzade, H. Hadi, C. Corda, F. Darabi   +3 more
doaj   +1 more source

Exploring the String Axiverse with Precision Black Hole Physics [PDF]

, 2010
It has recently been suggested that the presence of a plenitude of light axions, an Axiverse, is evidence for the extra dimensions of string theory.
A. Arvanitaki, S. Dubovsky
semanticscholar   +1 more source

Evolving Black Hole Horizons in General Relativity and Alternative Gravity

Galaxies, 2013
From the microscopic point of view, realistic black holes are time-dependent and the teleological concept of the event horizon fails. At present, the apparent or trapping horizon seem to be its best replacements in various areas of black hole physics. We
Valerio Faraoni
doaj   +1 more source

Gravitational footprints of black holes and their microstate geometries

Journal of High Energy Physics, 2021
We construct a family of non-supersymmetric extremal black holes and their horizonless microstate geometries in four dimensions. The black holes can have finite angular momentum and an arbitrary charge-to-mass ratio, unlike their supersymmetric cousins ...
Ibrahima Bah, Iosif Bena, Pierre Heidmann, Yixuan Li, Daniel R. Mayerson   +4 more
doaj   +1 more source

Thermodynamic Metrics and Black Hole Physics

Entropy, 2015
We give a brief survey of thermodynamic metrics, in particular the Hessian of the entropy function, and how they apply to black hole thermodynamics. We then provide a detailed discussion of the Gibbs surface of Kerr black holes. In particular, we analyze
Jan E. Åman, Ingemar Bengtsson, Narit Pidokrajt   +2 more
doaj   +1 more source

The Associations Between Chronic Active Lesions and White Matter Disease: A 7 Tesla Imaging Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background The relationship between paramagnetic rim lesions (PRLs) and surrounding normally appearing white matter (NAWM) disease, potentially contributory to the associations seen between PRLs and clinical impairment, is underexplored. Objectives To assess whether PRLs correlate with a greater degree of NAWM injury in early MS.
Ellie McCluey, Ahmad A. Toubasi, Jiacheng Wang, Habeeb F. Kazimuddin, Taegan Vinarsky, Caroline Gheen, Carynn Koch, Zachery Rohm, Bryan Hernandez, Margareta A. Clarke, Rachael Cheek, Rozita Khalili, Chaoyang Jin, Victoria Lim, John Kramer, Junzhong Xu, Ipek Oguz, Francesca Bagnato   +17 more
wiley   +1 more source

Development and Preliminary In Vivo Study of 3D‐Printed Bioactive Glass Scaffolds with Trabecular Architecture

Advanced Engineering Materials, EarlyView.
This study reports the fabrication of trabecular bioactive glass scaffolds (composition “1d”: 46.1SiO2‐28.7CaO‐8.8MgO‐6.2P2O5‐5.7CaF2‐4.5Na2O wt%) through vat photopolymerization and the relevant results from mechanical testing and in vivo implantation procedures in rabbit femora, showing great promise for bone tissue engineering applications.
Dilshat Tulyaganov, Roberta Gabrieli, Avzal Akbarov, Nigora Nigmatova, Bekhzod Khabilov, Alessandro Schiavi, Martin Schwentenwein, Enrica Verné, Francesco Baino   +8 more
wiley   +1 more source

All-order celestial OPE from on-shell recursion

Journal of High Energy Physics, 2023
We determine tree level, all-order celestial operator product expansions (OPEs) of gluons and gravitons in the maximally helicity violating (MHV) sector.
Lecheng Ren, Anders Schreiber, Atul Sharma, Diandian Wang   +3 more
doaj   +1 more source