scholarly journals Does black hole continuum spectrum signal f(R) gravity in higher dimensions?

2020 ◽  
Vol 101 (2) ◽  
Author(s):  
Indrani Banerjee ◽  
Bhaswati Mandal ◽  
Soumitra SenGupta
Keyword(s):  
Black Hole ◽  
Higher Dimensions ◽  
Continuum Spectrum

scholarly journals On the topology of stationary black hole event horizons in higher dimensions

2006 ◽  
Vol 2006 (02) ◽  
pp. 025-025 ◽  
Author(s):  
Craig Helfgott ◽  
Yaron Oz ◽  
Yariv Yanay
Keyword(s):  
Black Hole ◽  
Higher Dimensions ◽  
Stationary Black Hole ◽  
Event Horizons

scholarly journals End point of nonaxisymmetric black hole instabilities in higher dimensions

2019 ◽  
Vol 100 (8) ◽  
Author(s):  
Hans Bantilan ◽  
Pau Figueras ◽  
Markus Kunesch ◽  
Rodrigo Panosso Macedo
Keyword(s):  
Black Hole ◽  
Higher Dimensions ◽  
End Point

scholarly journals Black Hole Hair in Higher Dimensions

2010 ◽  
Vol 53 (2) ◽  
pp. 285-290 ◽  
Author(s):  
Cao Chao ◽  
Chen Yi-Xin ◽  
Li Jian-Long
Keyword(s):  
Black Hole ◽  
Higher Dimensions

scholarly journals Gravitational Capture Cross-Section of Particles by Schwarzschild-Tangherlini Black Holes

Universe ◽  
2021 ◽  
Vol 7 (8) ◽  
pp. 307
Author(s):  
Bobomurat Ahmedov ◽  
Ozodbek Rahimov ◽  
Bobir Toshmatov
Keyword(s):  
Black Hole ◽  
Cross Section ◽  
Cross Sections ◽  
Capture Cross Section ◽  
Higher Dimensions ◽  
Capture Cross ◽  
Circular Orbits ◽  
Test Particles ◽  
Dimensional Spacetime ◽  
Gravitational Capture

We study the capture cross-section of massless (photon) and massive test particles by the Schwarzschild–Tangherlini black hole, which is a solution of pure general relativity in higher dimensional spacetime with R×SD−2 topology. It is shown that an extra dimension weakens the gravitational attraction of a black hole, and consequently, radii of all the characteristic circular orbits, such as the radius of a photonsphere decrease in the higher dimensions. Furthermore, it is shown that in higher dimensions, there are no stable and bounded circular orbits. The critical impact parameters and capture cross-sections of photons and massive particles are calculated for several higher dimensions and it is shown that they also decrease with increasing dimension. Moreover, we calculate the capture cross-section of relativistic and non-relativistic test particles in the higher dimensions..

scholarly journals Black hole quantum vacuum polarization in higher dimensions

2016 ◽  
Vol 94 (10) ◽  
Author(s):  
Antonino Flachi ◽  
Gonçalo M. Quinta ◽  
José P. S. Lemos
Keyword(s):  
Black Hole ◽  
Vacuum Polarization ◽  
Higher Dimensions ◽  
Quantum Vacuum

scholarly journals Black holes and magnetic fields

2006 ◽  
Vol 2 (S238) ◽  
pp. 139-144
Author(s):  
Jiří Bičák ◽  
Vladimír Karas ◽  
Tomáš Ledvinka
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Magnetic Fields ◽  
Magnetic Flux ◽  
Higher Dimensions ◽  
Meissner Effect ◽  
Maxwell Theory ◽  
Potential Threat ◽  
Rotating Black Holes ◽  
Extreme Black Holes

AbstractStationary axisymmetric magnetic fields are expelled from outer horizons of black holes as they become extremal. Extreme black holes exhibit Meissner effect also within exact Einstein–Maxwell theory and in string theories in higher dimensions. Since maximally rotating black holes are expected to be astrophysically most important, the expulsion of the magnetic flux from their horizons represents a potential threat to an electromagnetic mechanism launching the jets at the account of black-hole rotation.

scholarly journals A note on entropy relations of black hole horizons

2014 ◽  
Vol 29 (18) ◽  
pp. 1450088 ◽  
Author(s):  
Xin-He Meng ◽  
Wei Xu ◽  
Jia Wang
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Black Hole Entropy ◽  
Higher Dimensions ◽  
Microscopic Level ◽  
Entropy Product ◽  
Product Part

Black holes with multi-horizons may provide new ways to understand the intrinsic thermodynamics. In this work, we focus on the entropy relations of black holes in three, four and higher dimensions. These entropy relations include entropy product, "part" entropy product and entropy sum. We also discuss their differences and similarities, in order to make a further study on understanding the origin of black hole entropy at the microscopic level.

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