Results 61 to 70 of about 2,217,119 (170)
Black hole entropy and models [PDF]
, 1997 No universally accepted statistical explanation of black hole entropy exists up to now, therefore, it is worth another try. Admittedly, black hole entropy does not have to have a statistical origin. If the "black hole entropy" is called "black hole index"
Sung, Shih-Ta
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The Astrophysical Journal LettersQuasiperiodic oscillations (QPOs) are very common in black hole accretion systems that are seen from the modulations in luminosity. Many supermassive black hole sources (e.g., RE J1034+396, 1H 0707-495, MCG-6-30-15, 1ES 1927+654, Sgr A*) have been ...
Indu K. Dihingia, Yosuke Mizuno
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Black hole shadow with a cosmological constant for cosmological observers
European Physical Journal C: Particles and Fields, 2019 We investigate the effect of the cosmological constant on the angular size of a black hole shadow. It is known that the accelerated expansion which is created by the cosmological constant changes the angular size of the black hole shadow for static ...
Javad T. Firouzjaee, Alireza Allahyari
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Trapping black hole remnants [PDF]
, 2005 Large extra dimensions lower the Planck scale to values soon accessible. The production of TeV mass black holes at the LHC is one of the most exciting predictions.
Bleicher, Marcus +2 more
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Clustering and redshift-space distortions in QSO and galaxy surveys [PDF]
, 2006 In this thesis, we exploit the potential of existing QSO and galaxy surveys for investigating the nature of the large scale structure in the Universe. A detailed analysis of clustering and redshift- space distortions allows us to constrain cosmological ...
Cruz da Angela, José Antonio +1 more
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Breaking black-hole uniqueness at supermassive scales
, 2023 In general relativity, all vacuum black holes are described by the Kerr solution. Beyond general relativity, there is a prevailing expectation that deviations from the Kerr solution increase with the horizon curvature.
Silva, Hector O. +3 more
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Close-up of star cluster black hole, 2013
, 2013 Close-up image of star cluster black hole. Scientists had believed that supermassive black holes, located at the centres of galaxies, increased their mass in step with the growth of their host galaxy.
Alister W. Graham, Gabriel Perez Diaz
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Modeling Targets and Optimal Frequencies for Imaging the Shadows of Nearby Supermassive Black Holes
The Astrophysical JournalHorizon-scale imaging of supermassive black holes has opened a new avenue for studying strong-field gravity and plasma physics in low-luminosity accretion flows.
J. Cole Faggert +2 more
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Evolution of black hole shadow in the presence of ultralight bosons
Physics Letters B, 2020 Kerr black holes coupled to quantized bosonic fields display a special version of the Hawking effect, governed by the superradiance condition. This leads to rapid growth of boson cloud through spontaneous creation, leading to slowing down of the black ...
Rittick Roy, Urjit A. Yajnik
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On the hydrodynamic interplay between a young nuclear starburst and a central supermassive black hole [PDF]
, 2010 We present one-dimensional numerical simulations, which consider the effects of radiative cooling and gravity on the hydrodynamics of the matter reinserted by stellar winds and supernovae within young nuclear starbursts (NSBs) with a central supermassive
GUILLERMO TENORIO TAGLE +2 more
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