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This paper reports a comprehensive study on the gravitational wave (GW) background from compact binary coalescences. We consider in our calculations newly available observation-based neutron star and black hole mass distributions and…

广义相对论与量子宇宙学 · 物理学 2015-03-20 Xing-Jiang Zhu , Eric J. Howell , David G. Blair , Zong-Hong Zhu

Gravitational wave (GW) observations probe both a diffuse, stochastic gravitational wave background (SGWB) as well as individual cataclysmic events such as the merger of two compact objects. The detection and description of the…

宇宙学与河外天体物理 · 物理学 2025-03-28 Eleanor Gleave , Andrew Jaffe

The stochastic gravitational-wave background (SGWB) generated by the inspiral and merger of binary neutron stars is traditionally modelled assuming that the inspiral is promptly followed by the collapse of the merger remnant to a rotating…

高能天体物理现象 · 物理学 2025-06-19 Léonard Lehoucq , Irina Dvorkin , Luciano Rezzolla

NANOGrav, EPTA, PPTA, and CPTA have announced the evidence for a stochastic signal from their latest data sets. Supermassive black hole binaries (SMBHBs) are supposed to be the most promising gravitational-wave (GW) sources of pulsar timing…

宇宙学与河外天体物理 · 物理学 2023-11-16 Yan-Chen Bi , Yu-Mei Wu , Zu-Cheng Chen , Qing-Guo Huang

Detecting the stochastic gravitational wave background (SGWB) from our Universe under the inflationary era is one of the primary scientific objectives of DECi-hertz Interferometer Gravitational wave Observatory (DECIGO), a space-borne…

广义相对论与量子宇宙学 · 物理学 2026-02-16 Takahiro S. Yamamoto

The Big Bang Observer (BBO) is a proposed space-based gravitational-wave (GW) mission designed primarily to search for an inflation-generated GW background in the frequency range 0.1-1 Hz. The major astrophysical foreground in this range is…

广义相对论与量子宇宙学 · 物理学 2009-11-11 C. Cutler , J. Harms

Scalar-tensor gravity, exemplified by Brans-Dicke (BD) gravity, introduces additional scalar polarization modes that contribute scalar radiation alongside tensor modes. We conduct a comprehensive analysis of how gravitational wave…

广义相对论与量子宇宙学 · 物理学 2025-06-13 Ran Chen , Zhao Li , Yin-Jie Li , Yi-Ying Wang , Rui Niu , Wen Zhao , Yi-Zhong Fan

The detection of the Stochastic Gravitational Wave Background (SGWB) is essential for understanding black hole populations, especially for supermassive black hole binaries. The recent promising results from various Pulsar Timing Array (PTA)…

广义相对论与量子宇宙学 · 物理学 2022-10-14 Yijun Wang , Kris Pardo , Tzu-Ching Chang , Olivier Doré

The recent Advanced LIGO detection of gravitational waves from the binary black hole GW150914 suggests there exists a large population of merging binary black holes in the Universe. Although most are too distant to be individually resolved…

广义相对论与量子宇宙学 · 物理学 2016-08-17 Thomas Callister , Letizia Sammut , Shi Qiu , Ilya Mandel , Eric Thrane

Next-generation gravitational-wave detectors like the Einstein Telescope and Cosmic Explorer, currently in their preparatory phase, have the potential to significantly improve our understanding of astrophysics, cosmology and fundamental…

广义相对论与量子宇宙学 · 物理学 2025-01-23 Michael Ebersold , Tania Regimbau , Nelson Christensen

High frequency gravitational waves (HFGWs) are predicted in various exotic scenarios involving both cosmological and astrophysical sources. These elusive signals have recently sparked the interest of a diverse community of researchers, due…

广义相对论与量子宇宙学 · 物理学 2024-09-17 Claudio Gatti , Luca Visinelli , Michael Zantedeschi

The primary target for the planned space-borne gravitational wave interferometers DECIGO/BBO is a primordial gravitational wave background (PGWB). However there exist astrophysical foregrounds and among them, gravitational waves from…

宇宙学与河外天体物理 · 物理学 2017-04-18 Kent Yagi , Naoki Seto

Disentangling the rich astrophysical structure of the stochastic gravitational-wave background (SGWB) from its cosmological component is essential for the Laser Interferometer Space Antenna (LISA) to access the physics of the early Universe…

宇宙学与河外天体物理 · 物理学 2025-06-25 Mesut Çalışkan , Neha Anil Kumar , Marc Kamionkowski , Sihao Cheng

We discuss the stochastic background of gravitational waves from ultra compact neutron star-white dwarf (NS-WD) binaries at cosmological distances. Under the assumption that accreting neutron stars and donor white dwarf stars form most of…

天体物理学 · 物理学 2009-11-10 Asantha Cooray

The detection of a subsolar object in a compact binary merger is regarded as one of the most compelling signatures of a population of primordial black holes (PBHs). We critically examine whether such systems can be distinguished from…

广义相对论与量子宇宙学 · 物理学 2025-11-04 Francesco Crescimbeni

The stochastic gravitational-wave background (SGWB) is expected to arise from the superposition of many independent and unresolved gravitational-wave signals of either cosmological or astrophysical origin. The spectral content of the SGWB…

宇宙学与河外天体物理 · 物理学 2013-08-27 Vuk Mandic , Eric Thrane , Stefanos Giampanis , Tania Regimbau

The gravitational waves (GWs) from supermassive binary black holes (BBHs) are long sought by pulsar timing array experiments (PTAs), in the forms of both a stochastic GW background (GWB) and individual sources. The evidence for a GWB was…

高能天体物理现象 · 物理学 2024-09-27 Yunfeng Chen , Qingjuan Yu , Youjun Lu

We investigate the stochastic gravitational wave background (SGWB) from neutrino-dominated accretion flows (NDAFs) based on the results of our fallback core-collapse supernova (CCSN) simulations. We find that the predicted SGWB is mainly…

高能天体物理现象 · 物理学 2024-08-02 Yun-Feng Wei , Tong Liu

The merger rate of black hole binaries inferred from the detections in the first Advanced LIGO science run, implies that a stochastic background produced by a cosmological population of mergers will likely mask the primordial…

宇宙学与河外天体物理 · 物理学 2017-04-19 T. Regimbau , M. Evans , N. Christensen , E. Katsavounidis , B. Sathyaprakash , S. Vitale

Pulsar Timing Arrays (PTA) around the world are using the incredible consistency of millisecond pulsars to measure low frequency gravitational waves from (super)Massive Black Hole (MBH) binaries. We use comprehensive MBH merger models based…

高能天体物理现象 · 物理学 2017-09-06 Luke Zoltan Kelley , Laura Blecha , Lars Hernquist , Alberto Sesana , Stephen R. Taylor