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Using few-body simulations, we investigate the evolution of supermassive black holes (SMBHs) in galaxies ($M_{\star}=10^{10}-10^{12}{\rm M}_{\odot}$ at $z=0$) at $0<z<4$. Following galaxy merger trees from the Millennium simulation, we…

星系天体物理 · 物理学 2017-11-29 Taeho Ryu , Rosalba Perna , Zoltán Haiman , Jeremiah P. Ostriker , Nicholas C. Stone

We model the dynamical evolution of primordial black holes (BHs) in dense star clusters using a simplified treatment of stellar dynamics in which the BHs are assumed to remain concentrated in an inner core, completely decoupled from the…

Pulsar timing arrays are sensitive to gravitational waves from supermassive black hole (SMBH) binaries at orbital separations of << 1pc. There is currently an observational paucity of such systems, although they are central figures in…

宇宙学与河外天体物理 · 物理学 2015-06-16 Sarah Burke-Spolaor

Massive black hole binaries are predicted to form during the hierarchical assembly of cosmic structures and will represent the loudest sources of low-frequency gravitational waves (GWs) detectable by present and forthcoming GW experiments.…

高能天体物理现象 · 物理学 2021-09-01 Elisa Bortolas , Alessia Franchini , Matteo Bonetti , Alberto Sesana

In this paper, we study the formation and dynamical evolution of black hole-black hole (BH-BH) binaries in young star clusters (YSCs), by means of N-body simulations. The simulations include metallicity-dependent recipes for stellar…

星系天体物理 · 物理学 2015-06-19 Brunetto Marco Ziosi , Michela Mapelli , Marica Branchesi , Giuseppe Tormen

The gravitational wave signals of black hole-neutron star (BHNS) binary systems have now been detected, and future detections might be accompanied by electromagnetic counterparts. BHNS mergers involve much of the same physics as binary…

高能天体物理现象 · 物理学 2024-04-24 Matthew D. Duez

In this {\it Letter} we calculate the fraction of highly eccentric binary black hole (BBH) mergers resulting from binary-single interactions. Using an $N$-body code that includes post-Newtonian correction terms, we show that $\gtrsim 1\%$…

高能天体物理现象 · 物理学 2017-05-24 Johan Samsing , Enrico Ramirez-Ruiz

In paper I of this series we showed that a large percentage of the binary black hole (BBH) mergers that form through dynamical interactions in globular clusters will have significant eccentricity in the ~10^{-3}-10^{-1} Hz LISA band. In…

高能天体物理现象 · 物理学 2018-10-19 Daniel J. D'Orazio , Johan Samsing

The evolution of main sequence binaries resided in the galactic centre is influenced a lot by the central super massive black hole (SMBH). Due to this perturbation, the stars in a dense environment are likely to experience mergers or…

星系天体物理 · 物理学 2017-02-01 Bin Liu , Yi-Han Wang , Ye-Fei Yuan

Accreting supermassive binary black holes (SMBBHs) are potential targets for multi-messenger astronomy as they emit gravitational waves (GW) while their environment emits electromagnetic (EM) waves. In order to get the most out of a joint…

高能天体物理现象 · 物理学 2023-01-04 Raphaël Mignon-Risse , Peggy Varniere , Fabien Casse

Supermassive black holes (SMBHs) are ubiquitous in galaxies with a sizable mass. It is expected that a pair of SMBHs originally in the nuclei of two merging galaxies would form a binary and eventually coalesce via a burst of gravitational…

星系天体物理 · 物理学 2016-09-21 Fazeel M. Khan , Davide Fiacconi , Lucio Mayer , Peter Berczik , Andreas Just

To describe a general bound binary black hole system, we need to consider orbital eccentricity and the misalignment of black holes' spin vectors with respect to the orbital angular momentum. While binary black holes produced through many…

高能天体物理现象 · 物理学 2025-05-13 Amitesh Singh , Nathan K. Johnson-McDaniel , Anuradha Gupta , Khun Sang Phukon

Extreme-mass-ratio inspirals (EMRIs) are important sources for space-borne gravitational-wave (GW) detectors. Such a source normally consists of a stellar-mass black hole (BH) and a Kerr supermassive BH (SMBH), but recent astrophysical…

高能天体物理现象 · 物理学 2022-12-14 Xian Chen , Zhongfu Zhang

Supermassive black hole binaries (SMBHs) are expected to result from galaxy mergers, and thus are natural byproducts (and probes) of hierarchical structure formation in the Universe. They are also the primary expected source of…

星系天体物理 · 物理学 2017-01-18 Lile Wang , Jenny E. Greene , Wenhua Ju , Roman R. Rafikov , John J. Ruan , Donald P. Schneider

Coalescing massive black hole binaries (MBHBs) of $10^{4-7} \rm M_{\odot}$, forming in the aftermath of galaxy mergers, are primary targets of the space mission LISA, the {\it Laser Interferometer Space Antenna}. An assessment of LISA…

星系天体物理 · 物理学 2019-05-21 Matteo Bonetti , Alberto Sesana , Francesco Haardt , Enrico Barausse , Monica Colpi

Observations suggest that star clusters often form in binaries or larger bound groups. Therefore, mergers between two clusters are likely to occur. If these clusters both harbor an intermediate-mass black hole (IMBH; 10^{2-4} Msun) in their…

天体物理学 · 物理学 2009-11-11 Pau Amaro-Seoane , Marc Freitag

"Hard" massive black hole (MBH) binaries embedded in steep stellar cusps can shrink via three-body slingshot interactions. We show that this process will inevitably be accompanied by a burst of stellar tidal disruptions, at a rate that can…

星系天体物理 · 物理学 2010-01-15 X. Chen , P. Madau , A. Sesana , F. K. Liu

We investigate a hierarchical structure formation scenario describing the evolution of a Super Massive Black Holes (SMBHs) population. The seeds of the local SMBHs are assumed to be 'pregalactic' black holes, remnants of the first POPIII…

天体物理学 · 物理学 2017-03-29 M. Volonteri , F. Haardt , P. Madau , A. Sesana

The stellar ejection rate and the rates of change of the binary semimajor axis and eccentricity are derived from scattering experiments for the restricted three-body problem. They are used to study the evolution of binaries in simple models…

天体物理学 · 物理学 2011-08-09 Gerald D. Quinlan

Beginning from massive binaries in the Galaxy we evolve black-hole, neutron-star binaries and binary neutron stars, such as the Hulse-Taylor system PSR 1913+16. The new point in our evolution is a quantitative calculation of the accretion…

天体物理学 · 物理学 2008-11-26 Hans A. Bethe , G. E. Brown
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