Results 11 to 20 of about 21,101 (315)

Black Holes Physics [PDF]

open access: yesAdvances in High Energy Physics, 2014
1 School of Science, Chongqing Jiaotong University, Nanan 400074, China 2Dipartimento di Fisica e Chimica, Istituto Universitario di Ricerca Scientifica “Santa Rita,” Centro di Scienze Naturali, Via di Galceti, 74, 59100 Prato, Italy 3 Institute for Theoretical Physics and Advanced Mathematics (IFM) Einstein-Galilei, Via Santa Gonda 14, 59100 Prato ...
Xiaoxiong Zeng   +2 more
openaire   +2 more sources

Bohr's Semiclassical Model of the Black Hole Thermodynamics [PDF]

open access: yesSerbian Astronomical Journal, 2008
We propose a simple procedure for evaluating the main attributes of a Schwarzschild's black hole: Bekenstein-Hawking entropy, Hawking temperature and Bekenstein's quantization of the surface area.
Panković, V.   +2 more
doaj   +3 more sources

A Detailed View of Low-frequency Quasi-periodic Oscillation in the Broadband 0.2–200 keV with Insight-HXMT and NICER

open access: yesThe Astrophysical Journal, 2023
We report the X-ray timing results of the black hole candidate MAXI J1820+070 during its 2018 outburst using the Hard X-ray Modulation Telescope (Insight-HXMT) and Neutron Star Interior Composition Explorer Mission (NICER) observations.
X. Ma   +15 more
doaj   +1 more source

UV–Optical Disk Reverberation Lags despite a Faint X-Ray Corona in the Active Galactic Nucleus Mrk 335

open access: yesThe Astrophysical Journal, 2023
 We present the first results from a 100-day Swift, NICER, and ground-based X-ray–UV–optical reverberation mapping campaign of the Narrow-line Seyfert 1 Mrk 335, when it was in an unprecedented low X-ray flux state.
Erin Kara   +39 more
doaj   +1 more source

String physics and black holes [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1996
20 pages, Latex (needs espcrc2.sty), 6 ...
Susskind, Leonard, Uglum, John
openaire   +3 more sources

Burns space and holography

open access: yesJournal of High Energy Physics, 2023
We elaborate on various aspects of our top-down celestial holographic duality wherein the semiclassical bulk spacetime is a 4d asymptotically flat, self-dual Kähler geometry known as Burns space.
Kevin Costello   +2 more
doaj   +1 more source

Nonquasinormal Modes and Black Hole Physics [PDF]

open access: yesPhysical Review Letters, 2004
The near-horizon geometry of a large class of extremal and near-extremal black holes in string and M theory contains three-dimensional asymptotically anti-de Sitter space. Motivated by this structure, we are led naturally to a discrete set of complex frequencies defined in terms of the monodromy at the inner and outer horizons of the black hole.
Birmingham, Danny, Carlip, S.
openaire   +3 more sources

Quantum vortex instability and black hole superradiance

open access: yesPhysical Review Research, 2022
Vortices and black holes set the scene for many interesting dynamical processes in physics. Here, we study the dynamical instability of quantized vortices and rotational superradiance around rotating black holes, illustrating in the process that the same
Sam Patrick   +4 more
doaj   +1 more source

Modeling Reconstructed Images of Jets Launched by SANE Super-Eddington Accretion Flows around SMBHs with the ngEHT

open access: yesGalaxies, 2022
Tidal disruption events (TDEs) around supermassive black holes (SMBHs) are a potential laboratory to study super-Eddington accretion disks and sometimes result in powerful jets or outflows which may shine in the radio and sub-millimeter bands.
Brandon Curd   +3 more
doaj   +1 more source

BLACK HOLES AND FUNDAMENTAL PHYSICS [PDF]

open access: yesNew Worlds in Astroparticle Physics, 2006
Invited talk at the Fifth International Workshop on New Worlds in Astroparticle Physics, University of the Algarve, Faro, Portugal, January 8-10, 2005, published in the Proceedings of the Fifth International Workshop on New Worlds in Astroparticle Physics, World Scientific (2006), eds. Ana M. Mour\~ao et al., p.
openaire   +2 more sources

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