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Numerous observations have shown that almost all galaxies in our Universe host supermassive black holes (SMBHs), but there is still much debate about their formation and evolutionary processes. Recently, gravitational waves (GWs) have been…

宇宙学与河外天体物理 · 物理学 2025-09-26 Kazuya Furusawa , Hiroyuki Tashiro , Shuichiro Yokoyama , Kiyotomo Ichiki

We consider the inverse problem in pulsar timing array (PTA) analysis, investigating what astrophysical information about the underlying massive black hole binary (MBHB) population can be recovered from the detection of a stochastic…

高能天体物理现象 · 物理学 2017-07-12 Siyuan Chen , Hannah Middleton , Alberto Sesana , Walter Del Pozzo , Alberto Vecchio

With our galactic evolutionary code that contains a detailed intermediate mass and massive binary population model, we study the temporal evolution of the galactic population of double neutron star binaries, mixed systems with a neutron…

太阳与恒星天体物理 · 物理学 2014-05-08 N. Mennekens , D. Vanbeveren

Mergers of black hole-neutron star (BHNS) binaries have now been observed by GW detectors with the recent announcement of GW200105 and GW200115. Such observations not only provide confirmation that these systems exist, but will also give…

The growing database of gravitational-wave (GW) detections with the binary black holes (BHs) merging in the distant Universe contains subtle insights into their formation scenarios. One of the puzzling properties of detected GW sources is…

高能天体物理现象 · 物理学 2024-09-25 Aleksandra Olejak , Jakub Klencki , Xiao-Tian Xu , Chen Wang , Krzysztof Belczynski , Jean-Pierre Lasota

Ground-based gravitational-wave (GW) observatories have transformed our view of compact-object mergers, yet their reach still limits a comprehensive reconstruction of the processes that generate these systems. Only next-generation…

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…

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)…

高能天体物理现象 · 物理学 2025-12-18 Jam Sadiq , Thomas Dent , Ana Lorenzo-Medina

We explore the connection between the gravitational wave (GW) merger rates of stellar-mass binary black holes (BBH) and galaxy properties. We do this by generating populations of stars using the binary population synthesis code COMPAS and…

星系天体物理 · 物理学 2023-06-28 Liana Rauf , Cullan Howlett , Tamara M. Davis , Claudia D. P. Lagos

There is significant observational evidence that a large fraction of galactic centers, including those in the Milky Way and M31, host a supermassive black hole (SMBH) embedded in a triaxial nuclear star cluster. In this work, we study the…

高能天体物理现象 · 物理学 2020-05-06 Mathew W. Bub , Cristobal Petrovich

Using state-of-the-art dynamical simulations of globular clusters, including radiation reaction during black hole encounters and a cosmological model of star cluster formation, we create a realistic population of dynamically-formed binary…

Gravitational-wave observations have revealed an excess of binary black hole mergers with primary masses near $\sim 35\,M_\odot$. We show that if this feature originates from dynamical formation in dense stellar systems, and if the…

高能天体物理现象 · 物理学 2026-05-01 Yonadav Barry Ginat , Fabio Antonini , Elizabeth Flanagan , Mark Gieles

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…

高能天体物理现象 · 物理学 2022-08-11 Sylvia Biscoveanu , Thomas A. Callister , Carl-Johan Haster , Ken K. Y. Ng , Salvatore Vitale , Will Farr

Long-duration gamma-ray bursts are thought to be associated with the core-collapse of massive, rapidly spinning stars and the formation of black holes. However, efficient angular momentum transport in stellar interiors, currently supported…

Primordial black holes (PBHs), possibly constituting a non-negligible fraction of dark matter (DM), might be responsible for a number of gravitational wave events detected by LIGO/Virgo/KAGRA. In this paper, we simulate the evolution of PBH…

星系天体物理 · 物理学 2025-04-22 Muhsin Aljaf , Ilias Cholis

The formation mechanisms of merging binary black holes (BBHs) observed by the LIGO-Virgo-KAGRA collaboration remain uncertain. Detectable eccentricity provides a powerful diagnostic for distinguishing between different formation channels,…

Recent detections of gravitational waves from merging binary black holes opened new possibilities to study the evolution of massive stars and black hole formation. In particular, stellar evolution models may be constrained on the basis of…

高能天体物理现象 · 物理学 2018-09-11 Irina Dvorkin , Jean-Philippe Uzan , Elisabeth Vangioni , Joseph Silk

Gravitational-wave observations give a unique insight into the formation and evolution of binary black holes. We use gravitational-wave measurements to address the question of whether GW170729's source, which is (probably) the most massive…

高能天体物理现象 · 物理学 2020-11-03 Chase Kimball , Christopher P L Berry , Vicky Kalogera

The population of binary black hole (BBH) mergers observed by the LIGO-Virgo-KAGRA (LVK) collaboration offers a window into the cosmic evolution of compact binaries and their formation. We employ the semi-analytic population-synthesis code…

A large number of mergers of binary black holes (BHs) have been discovered by gravitational wave observations since the first detection of gravitational waves 2015. Binary BH mergers are the loudest events in the universe, however their…

高能天体物理现象 · 物理学 2024-03-18 Ataru Tanikawa