scholarly journals Search for gravitational waves from intermediate mass binary black holes

2012 ◽  
Vol 85 (10) ◽  
Author(s):  
J. Abadie ◽  
B. P. Abbott ◽  
R. Abbott ◽  
T. D. Abbott ◽  
M. Abernathy ◽  
...  
Keyword(s):  
Black Holes ◽  
Gravitational Waves ◽  
Intermediate Mass ◽  
Binary Black Holes

scholarly journals mocca-survey Database I: Binary black hole mergers from globular clusters with intermediate mass black holes

2020 ◽  
Vol 498 (3) ◽  
pp. 4287-4294
Author(s):  
Jongsuk Hong ◽  
Abbas Askar ◽  
Mirek Giersz ◽  
Arkadiusz Hypki ◽  
Suk-Jin Yoon
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Gravitational Waves ◽  
Globular Clusters ◽  
Stellar Mass ◽  
Intermediate Mass ◽  
Binary Black Holes ◽  
Black Hole Binaries ◽  
Binary Black Hole ◽  
Intermediate Mass Black Holes

ABSTRACT The dynamical formation of black hole binaries in globular clusters that merge due to gravitational waves occurs more frequently in higher stellar density. Meanwhile, the probability to form intermediate mass black holes (IMBHs) also increases with the density. To explore the impact of the formation and growth of IMBHs on the population of stellar mass black hole binaries from globular clusters, we analyse the existing large survey of Monte Carlo globular cluster simulation data (mocca-survey Database I). We show that the number of binary black hole mergers agrees with the prediction based on clusters’ initial properties when the IMBH mass is not massive enough or the IMBH seed forms at a later time. However, binary black hole formation and subsequent merger events are significantly reduced compared to the prediction when the present-day IMBH mass is more massive than ${\sim}10^4\, \rm M_{\odot }$ or the present-day IMBH mass exceeds about 1 per cent of cluster’s initial total mass. By examining the maximum black hole mass in the system at the moment of black hole binary escaping, we find that ∼90 per cent of the merging binary black holes escape before the formation and growth of the IMBH. Furthermore, large fraction of stellar mass black holes are merged into the IMBH or escape as single black holes from globular clusters in cases of massive IMBHs, which can lead to the significant underpopulation of binary black holes merging with gravitational waves by a factor of 2 depending on the clusters’ initial distributions.

scholarly journals Enriching the symphony of gravitational waves from binary black holes by tuning higher harmonics

2018 ◽  
Vol 98 (8) ◽  
Author(s):  
Roberto Cotesta ◽  
Alessandra Buonanno ◽  
Alejandro Bohé ◽  
Andrea Taracchini ◽  
Ian Hinder ◽  
...  
Keyword(s):  
Black Holes ◽  
Gravitational Waves ◽  
Higher Harmonics ◽  
Binary Black Holes

scholarly journals Tests of CPT invariance in gravitational waves with LIGO-Virgo catalog GWTC-1

2020 ◽  
Vol 80 (11) ◽  
Author(s):  
Sai Wang ◽  
Zhi-Chao Zhao
Keyword(s):  
Black Holes ◽  
Dispersion Relation ◽  
Gravitational Waves ◽  
Cpt Violation ◽  
Cpt Invariance ◽  
Binary Black Holes ◽  
Better Than

AbstractA discovery of gravitational waves from binary black holes raises a possibility that measurements of them can provide strict tests of CPT invariance in gravitational waves. When CPT violation exists, if any, gravitational waves with different circular polarizations could gain a slight difference in propagating speeds. Hence, the birefringence of gravitational waves is induced and there should be a rotation of plus and cross modes. For CPT-violating dispersion relation $${\omega ^{2}=k^{2}}$$ ω 2 = k 2 $${\pm 2\zeta k^{3}}$$ ± 2 ζ k 3 , where a sign $${\pm }$$ ± denotes different circular polarizations, we find no substantial deviations from CPT invariance in gravitational waves by analyzing a compilation of ten signals of binary black holes in the LIGO-Virgo catalog GWTC-1. We obtain a strict constraint on the CPT-violating parameter, i.e., $$\zeta =0.14^{+0.22}_{-0.31}\times 10^{-15}\,\text {m}$$ ζ = 0 . 14 - 0.31 + 0.22 × 10 - 15 m , which is around two orders of magnitude better than the existing one. Therefore, this study stands for the up-to-date strictest tests of CPT invariance in gravitational waves.

scholarly journals Implementing a search for gravitational waves from binary black holes with nonprecessing spin

2016 ◽  
Vol 93 (12) ◽  
Author(s):  
Collin Capano ◽  
Ian Harry ◽  
Stephen Privitera ◽  
Alessandra Buonanno
Keyword(s):  
Black Holes ◽  
Gravitational Waves ◽  
Binary Black Holes

scholarly journals Binary black holes, gravitational waves, and numerical relativity

2007 ◽  
Vol 78 ◽  
pp. 012010 ◽  
Author(s):  
Joan M Centrella ◽  
John G Baker ◽  
William D Boggs ◽  
Bernard J Kelly ◽  
Sean T McWilliams ◽  
...  
Keyword(s):  
Black Holes ◽  
Gravitational Waves ◽  
Numerical Relativity ◽  
Binary Black Holes

scholarly journals Inferring the population properties of binary black holes from unresolved gravitational waves

2020 ◽  
Vol 496 (3) ◽  
pp. 3281-3290 ◽  
Author(s):  
Rory J E Smith ◽  
Colm Talbot ◽  
Francisco Hernandez Vivanco ◽  
Eric Thrane
Keyword(s):  
Black Holes ◽  
Gravitational Waves ◽  
Monte Carlo Study ◽  
Design Sensitivity ◽  
Spin Distribution ◽  
Binary Black Holes ◽  
Compact Binaries ◽  
Compact Binary ◽  
Binary Mergers ◽  
The Universe

ABSTRACT The vast majority of compact binary mergers in the Universe produce gravitational waves that are too weak to yield unambiguous detections; they are unresolved. We present a method to infer the population properties of compact binaries – such as their merger rates, mass spectrum, and spin distribution – using both resolved and unresolved gravitational waves. By eliminating entirely the distinction between resolved and unresolved signals, we eliminate bias from selection effects. To demonstrate this method, we carry out a Monte Carlo study using an astrophysically motivated population of binary black holes. We show that some population properties of compact binaries are well constrained by unresolved signals after about one week of observation with Advanced LIGO at design sensitivity.

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