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相关论文: The cosmic merger rate density evolution of compac…

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Most of proposed models of cosmological gamma-ray bursts (GRBs) are associated to gravitational collapses of massive stars, and hence evolution of the GRB rate, which is crucially important in GRB intensity distribution analysis, is…

天体物理学 · 物理学 2007-05-23 Tomonori TOTANI

We present the merger rate density of Population (Pop.) III binary black holes (BHs) by means of a widely-used binary population synthesis code BSE with extensions to very massive and extreme metal-poor stars. We consider not only low-mass…

高能天体物理现象 · 物理学 2021-03-30 Ataru Tanikawa , Hajime Susa , Takashi Yoshida , Alessandro A. Trani , Tomoya Kinugawa

We study the stellar binary black holes (BBHs) inspiralling/merging in galactic nuclei based on our numerical method GNC. We find that $3-40\%$ of all new born BBHs will finally merge due to various dynamical effects. In a five year's…

高能天体物理现象 · 物理学 2022-02-15 Fupeng Zhang , Xian Chen , Lijing Shao , Kohei Inayoshi

Observations by the current generation of gravitational-wave detectors have been pivotal in expanding our understanding of the universe. Although tens of exciting compact binary mergers have been observed, neutron star-black hole (NSBH)…

广义相对论与量子宇宙学 · 物理学 2023-07-26 Ish Gupta , Ssohrab Borhanian , Arnab Dhani , Debatri Chattopadhyay , Rahul Kashyap , V. Ashley Villar , B. S. Sathyaprakash

Merging compact binaries are the one source of gravitational radiation so far identified. Because short-period systems which will merge in less than a Hubble time have already been observed as binary pulsars, they are important both as…

宇宙学与河外天体物理 · 物理学 2014-11-20 Marcel Zemp , Enrico Ramirez-Ruiz , Jürg Diemand

The merger rate of primordial black hole (PBH) binaries can be used to understand the source population of the merging black hole binaries observable through gravitational-waves (GWs) and also to constrain the possible contribution of PBHs…

高能天体物理现象 · 物理学 2025-12-16 Muhsin Aljaf , Ilias Cholis

Eccentric mergers are a signature of the dynamical formation channel of binary black holes (BBHs) in dense stellar environments and hierarchical triple systems. Here, we investigate the formation of eccentric mergers via binary-single…

高能天体物理现象 · 物理学 2024-03-20 Marco Dall'Amico , Michela Mapelli , Stefano Torniamenti , Manuel Arca Sedda

Young massive clusters (YMC) and open clusters (OC) are widely considered as potential environments for assembling merging binary stellar-remnant black holes (BBH) via dynamical interactions. However, such moderate mass systems are…

星系天体物理 · 物理学 2025-08-21 Sambaran Banerjee

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…

We derive constraints on the time-averaged event rate of neutron star-black hole (NS-BH) mergers by using estimates of the population-integrated production of heavy rapid neutron-capture (r-process) elements with nuclear mass numbers A >…

太阳与恒星天体物理 · 物理学 2015-06-22 Andreas Bauswein , Ricard Ardevol Pulpillo , H. -Thomas Janka , Stephane Goriely

LIGO/Virgo Collaboration reported the detection of the most massive black hole - black hole (BH-BH) merger up to date with component masses of 85 Msun and 66 Msun (GW190521). Motivated by recent observations of massive stars in the 30…

高能天体物理现象 · 物理学 2020-12-23 Krzysztof Belczynski

GW231123, the most massive binary black hole (BBH) merger detected by LIGO/Virgo/KAGRA, highlights the need to understand the origins of massive, high-spin stellar black holes (BHs). Dense star clusters provide natural environments for…

高能天体物理现象 · 物理学 2025-11-12 Fulya Kıroğlu , Kyle Kremer , Frederic A. Rasio

Young star clusters are dynamically active stellar systems and are a common birthplace for massive stars. Low-mass star clusters ($\sim{}300-10^3$ M$_\odot$) are more numerous than massive systems and are characterized by a two-body…

In this work we investigate the merger rate of primordial black hole-neutron star (PBH-NS) binaries in two widely-studied modified gravity (MG) models: Hu-Sawicki $f(R)$ gravity and the normal branch of Dvali-Gabadadze-Porrati (nDGP)…

广义相对论与量子宇宙学 · 物理学 2024-05-16 Saeed Fakhry , Maryam Shiravand , Marzieh Farhang

We investigate the prospects of observing residual eccentricity in a population of compact binaries by calculating the power in the eccentric harmonics, following the methodology in arXiv:2411.04187. Although most observed compact binary…

高能天体物理现象 · 物理学 2025-12-09 Mukesh Kumar Singh , Ben G. Patterson , Stephen Fairhurst

Black hole-neutron star (BHNS) binaries are expected to be among the leading sources of gravitational waves observable by ground-based detectors, and may be the progenitors of short-hard gamma ray bursts (SGRBs) as well. Here, we discuss…

The dynamical formation of stellar-mass black hole-black hole binaries has long been a promising source of gravitational waves for the Laser Interferometer Gravitational-Wave Observatory (LIGO). Mass segregation, gravitational focusing, and…

高能天体物理现象 · 物理学 2016-06-30 Ryan M. O'Leary , Yohai Meiron , Bence Kocsis

In this Paper we consider a problem of formation and evolution of orbital parameters of a binary primordial black hole (PBH) due to gravitational interaction with clustering cold dark matter (CDM). Mass and initial separation have values,…

宇宙学与河外天体物理 · 物理学 2022-06-22 Sergey Pilipenko , Maxim Tkachev , Pavel Ivanov

Hierarchical mergers of black holes are proposed as a mechanism to explain the observations of binary black holes with component masses between $\sim 50M_{\odot}\hbox{--}130M_{\odot}$ by LIGO/Virgo, often referred to as "upper mass gap". We…

高能天体物理现象 · 物理学 2025-01-23 Parthapratim Mahapatra , Debatri Chattopadhyay , Anuradha Gupta , Marc Favata , B. S. Sathyaprakash , K. G. Arun

Observations of black hole-neutron star (BH-NS) mergers via gravitational waves (GWs) are of great interest for their electromagnetic counterparts, such as short gamma-ray bursts, and could provide crucial information on the nature of BHs…

星系天体物理 · 物理学 2019-10-23 Giacomo Fragione , Abraham Loeb
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