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Related papers: Inferring the spin distribution of binary black ho…

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The spin distribution of binary black hole mergers contains key information concerning the formation channels of these objects, and the astrophysical environments where they form, evolve and coalesce. To quantify the suitability of deep…

General Relativity and Quantum Cosmology · Physics 2020-08-27 Asad Khan , E. A. Huerta , Arnav Das

The spins of black holes in merging binaries can reveal information related to the formation and evolution of these systems through their gravitational wave emission. Combining events to infer the astrophysical distribution of black hole…

High Energy Astrophysical Phenomena · Physics 2023-03-15 Jacob Golomb , Colm Talbot

The spin of a black hole (BH) encodes information about its formation and evolution history. Yet the understanding of the distribution of BH spins in X-ray binaries (XBs), of the models used to measure spin, and of their impact on…

High Energy Astrophysical Phenomena · Physics 2025-09-04 Paul A. Draghis , Jon M. Miller , Laura Brenneman , Elisa Costantini , Luigi C. Gallo , Mark Reynolds , John A. Tomsick , Abderahmen Zoghbi

The relative spin orientations of black holes (BHs) in binaries encode their evolutionary history: BHs assembled dynamically should have isotropically distributed spins, while spins of the BHs originating in the field should be aligned with…

High Energy Astrophysical Phenomena · Physics 2023-04-12 Vishal Baibhav , Zoheyr Doctor , Vicky Kalogera

Attempts to understand the formation of binary black hole (BBH) systems detected via gravitational wave (GW) emission are affected by many unknowns and uncertainties, from both the observational and theoretical (astrophysical modelling)…

High Energy Astrophysical Phenomena · Physics 2025-12-18 Jam Sadiq , Thomas Dent , Ana Lorenzo-Medina

The detection of double black hole (BH+BH) mergers provides a unique possibility to understand their physical properties and origin. To date, the LIGO-Virgo-KAGRA network of high-frequency gravitational wave observatories have announced the…

High Energy Astrophysical Phenomena · Physics 2022-10-26 Thomas M. Tauris

The individual component spins of binary black holes (BBHs) are difficult to resolve using gravitational-wave observations but carry key signatures of the processes shaping their formation and evolution. Recent analyses have found…

General Relativity and Quantum Cosmology · Physics 2026-04-23 Lillie Szemraj , Sylvia Biscoveanu

Astrophysical black holes (BHs) have two fundamental properties: mass and spin. While the mass-evolution of BHs has been extensively studied, much less work has been done on predicting the distribution of BH spins. In this paper we present…

With the detection of four candidate binary black hole (BBH) mergers by the Advanced LIGO detectors thus far, it is becoming possible to constrain the properties of the BBH merger population in order to better understand the formation of…

High Energy Astrophysical Phenomena · Physics 2018-02-21 Ben Farr , Daniel E. Holz , Will M. Farr

We introduce deep learning models to estimate the masses of the binary components of black hole mergers, $(m_1,m_2)$, and three astrophysical properties of the post-merger compact remnant, namely, the final spin, $a_f$, and the frequency…

General Relativity and Quantum Cosmology · Physics 2021-12-21 Hongyu Shen , E. A. Huerta , Eamonn O'Shea , Prayush Kumar , Zhizhen Zhao

Recent work paints a conflicting portrait of the distribution of black hole spins in merging binaries measured with gravitational waves. Some analyses find that a significant fraction of merging binaries contain at least one black hole with…

General Relativity and Quantum Cosmology · Physics 2022-04-26 Shanika Galaudage , Colm Talbot , Tushar Nagar , Deepnika Jain , Eric Thrane , Ilya Mandel

The observation of gravitational-wave signals from merging black-hole binaries enables direct measurement of the properties of the black holes. An individual observation allows measurement of the black-hole masses, but only limited…

General Relativity and Quantum Cosmology · Physics 2018-12-12 Vaibhav Tiwari , Stephen Fairhurst , Mark Hannam

The population-level distributions of the masses, spins, and redshifts of binary black holes (BBHs) observed using gravitational waves can shed light on how these systems form and evolve. Because of the complex astrophysical processes…

High Energy Astrophysical Phenomena · Physics 2022-08-11 Sylvia Biscoveanu , Thomas A. Callister , Carl-Johan Haster , Ken K. Y. Ng , Salvatore Vitale , Will Farr

The spin properties of merging black holes observed with gravitational waves can offer novel information about the origin of these systems. The magnitude and orientations of black hole spins offer a record of binaries' evolutionary history,…

High Energy Astrophysical Phenomena · Physics 2022-10-04 Thomas A. Callister , Simona J. Miller , Katerina Chatziioannou , Will M. Farr

Binary black holes (BBHs) are one of the endpoints of isolated binary evolution, and their mergers a leading channel for gravitational wave events. Here, using the evolutionary code \textsc{StarTrack}, we study the statistical properties of…

High Energy Astrophysical Phenomena · Physics 2018-04-19 Rosalba Perna , Martyna Chruslinska , Alessandra Corsi , Krzysztof Belczynski

The first direct detections of gravitational waves from merging binary black holes open a unique window into the binary black hole formation environment. One promising environmental signature is the angular distribution of the black hole…

High Energy Astrophysical Phenomena · Physics 2017-09-06 Will M. Farr , Simon Stevenson , M. Coleman Miller , Ilya Mandel , Ben Farr , Alberto Vecchio

There are at least two formation scenarios consistent with the first gravitational-wave observations of binary black hole mergers. In field models, black hole binaries are formed from stellar binaries that may undergo common envelope…

High Energy Astrophysical Phenomena · Physics 2017-08-29 Colm Talbot , Eric Thrane

The spins of binary black holes (BBHs) measured from gravitational waves carry notable information of the formation pathways. Here we propose a quantity "dimensionless net spin" ($\chi_{\rm N}$), which is related to the sum of angular…

High Energy Astrophysical Phenomena · Physics 2024-06-06 Wei-Hua Guo , Yin-Jie Li , Yuan-Zhu Wang , Yong Shao , Shichao Wu , Tao Zhu , Yi-Zhong Fan

The catalog of gravitational-wave events is growing, and so are our hopes of constraining the underlying astrophysics of stellar-mass black-hole mergers by inferring the distributions of, e.g., masses and spins. While conventional analyses…

High Energy Astrophysical Phenomena · Physics 2022-11-15 Matthew Mould , Davide Gerosa , Stephen R. Taylor

With the recent release of the second gravitational-wave transient catalogue (GWTC-2), which introduced dozens of new detections, we are at a turning point of gravitational wave astronomy, as we are now able to directly infer constraints on…

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