scholarly journals Dynamics of marginally trapped surfaces in a binary black hole merger: Growth and approach to equilibrium

2018 ◽  
Vol 97 (8) ◽  
Author(s):  
Anshu Gupta ◽  
Badri Krishnan ◽  
Alex B. Nielsen ◽  
Erik Schnetter
Keyword(s):  
Black Hole ◽  
Approach To Equilibrium ◽  
Trapped Surfaces ◽  
Binary Black Hole ◽  
Marginally Trapped Surfaces

scholarly journals On the Trapped Surface Characterization of Black Hole Region in Vaidya Spacetime

2018 ◽  
Vol 10 (1) ◽  
pp. 59
Author(s):  
Mohammed Kumah ◽  
Francis T. Oduro
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Event Horizon ◽  
Surface Characterization ◽  
Local Approach ◽  
Null Infinity ◽  
Trapped Surfaces ◽  
Marginally Trapped Surfaces ◽  
Trapped Surface

Characterizing black holes by means of classical event horizon is a global concept because it depends on future null infinity. This means, to find black hole region and event horizon requires the notion of the entire spacetime which is a teleological concept. With this as a motivation, we use local approach as a complementary means of characterizing black holes. In this paper we apply Gauss divergence and covariant divergence theorems to compute the fluxes and the divergences of the appropriate null vectors in Vaidya spacetime and thus explicitly determine the existence of trapped and marginally trapped surfaces in its black hole region.

scholarly journals The fate of Schwarzschild–de Sitter black holes in f(R) gravity

2016 ◽  
Vol 31 (09) ◽  
pp. 1650054 ◽  
Author(s):  
Andrea Addazi ◽  
Salvatore Capozziello
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Thermal Radiation ◽  
Black Hole Physics ◽  
Black Hole Horizon ◽  
De Sitter ◽  
Trapped Surfaces ◽  
Emission Time ◽  
Marginally Trapped Surfaces

The semiclassical effects of anti-evaporating black holes can be discussed in the framework of f(R) gravity. In particular, the Bousso–Hawking–Nojiri–Odinstov anti-evaporation instability of degenerate Schwarzschild–de Sitter black holes (the so-called Nariai spacetime) leads to a dynamical increasing of black hole horizon in f(R) gravity. This phenomenon causes the following transition: emitting marginally trapped surfaces (TS) become space-like surfaces before the effective Bekenstein–Hawking emission time. As a consequence, Bousso–Hawking thermal radiation cannot be emitted in an anti-evaporating Nariai black hole. Possible implications in cosmology and black hole physics are also discussed.

scholarly journals Existence and stability of marginally trapped surfaces in black-hole spacetimes

2019 ◽  
Vol 99 (6) ◽  
Author(s):  
Daniel Pook-Kolb ◽  
Ofek Birnholtz ◽  
Badri Krishnan ◽  
Erik Schnetter
Keyword(s):  
Black Hole ◽  
Trapped Surfaces ◽  
Black Hole Spacetimes ◽  
Existence And Stability ◽  
Marginally Trapped Surfaces

scholarly journals Optimization of model independent gravitational wave search for binary black hole mergers using machine learning

2021 ◽  
Vol 104 (2) ◽  
Author(s):  
T. Mishra ◽  
B. O’Brien ◽  
V. Gayathri ◽  
M. Szczepańczyk ◽  
S. Bhaumik ◽  
...  
Keyword(s):  
Machine Learning ◽  
Black Hole ◽  
Gravitational Wave ◽  
Binary Black Hole ◽  
Model Independent

scholarly journals Binary black hole spectroscopy: A no-hair test of GW190814 and GW190412

2020 ◽  
Vol 102 (12) ◽  
Author(s):  
Collin D. Capano ◽  
Alexander H. Nitz
Keyword(s):  
Black Hole ◽  
Binary Black Hole

scholarly journals Binary black hole mergers from LIGO/Virgo O1 and O2: Population inference combining confident and marginal events

2020 ◽  
Vol 102 (12) ◽  
Author(s):  
Javier Roulet ◽  
Tejaswi Venumadhav ◽  
Barak Zackay ◽  
Liang Dai ◽  
Matias Zaldarriaga
Keyword(s):  
Black Hole ◽  
Binary Black Hole ◽  
Population Inference
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