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Recent observations discovered that some repeating fast radio bursts (FRBs) show a large value and complex variations of Faraday rotation measures (RMs). The binary systems containing a supermassive black hole (SMBH) and a neutron star (NS)…

高能天体物理现象 · 物理学 2023-09-19 Rui-Nan Li , Zhen-Yin Zhao , Zhifu Gao , F. Y. Wang

The inference of binary neutron star properties from gravitational-wave observations requires the generation of millions of waveforms, each one spanning about three order of magnitudes in frequency range. Thus, waveform models must be…

广义相对论与量子宇宙学 · 物理学 2021-10-27 Rossella Gamba , Sebastiano Bernuzzi , Alessandro Nagar

Extreme mass-ratio inspirals (EMRIs) are one of the key sources of gravitational waves for space-based detectors such as LISA. However, their detection remains a major data analysis challenge due to the signals' complexity and length. We…

广义相对论与量子宇宙学 · 物理学 2026-01-28 Lorenzo Speri , Rodrigo Tenorio , Christian Chapman-Bird , Davide Gerosa

The future space mission LISA will observe a wealth of gravitational-wave sources at millihertz frequencies. Of these, the extreme-mass-ratio inspirals of compact objects into massive black holes are the only sources that combine the…

广义相对论与量子宇宙学 · 物理学 2021-02-08 Alvin J. K. Chua , Michael L. Katz , Niels Warburton , Scott A. Hughes

We produce the gravitational waveforms for the extreme mass ratio inspiral systems (EMRIs) of binary stars moving around central supermassive black hole (SBH), or called B-EMRIs. We calculate the external orbits of the binary stars via the…

广义相对论与量子宇宙学 · 物理学 2026-03-11 Kun Meng , Hongsheng Zhang , Xi-Long Fan , Yuan Yong , Fei Du

We present an improved version of the approximate scheme for generating inspirals of test-bodies into a Kerr black hole recently developed by Glampedakis, Hughes and Kennefick. Their original "hybrid" scheme was based on combining exact…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Jonathan R Gair , Kostas Glampedakis

Characterizing eccentricity in gravitational waveforms in a consistent manner is crucial to facilitate parameter estimation, astrophysical population studies, as well as searches for these rare systems. We present a framework to…

广义相对论与量子宇宙学 · 物理学 2025-02-06 Tousif Islam , Tejaswi Venumadhav

The effective one-body (EOB) theory provides an innovative framework for analyzing the dynamics of binary systems, as articulated by Hamilton's equations. This paper investigates a self-consistent EOB theory specifically tailored for the…

广义相对论与量子宇宙学 · 物理学 2025-09-09 Jiliang Jing , Sheng Long , Weike Deng , Jieci Wang

We discuss the energy loss due to gravitational radiation of binaries composed of exotic objects whose horizon boundary conditions are replaced with reflective ones. Our focus is on the extreme mass-ratio inspirals, in which the central…

广义相对论与量子宇宙学 · 物理学 2021-09-06 Norichika Sago , Takahiro Tanaka

The post-Newtonian approximation is useful to discuss gravitational waveforms for binary inspirals. In this note, for retrograde circular orbits in the equatorial plane, we discuss the region of validity of the post-Newtonian approximation…

广义相对论与量子宇宙学 · 物理学 2017-12-22 Ryuichi Fujita , Norichika Sago , Hiroyuki Nakano

We describe a new kludge scheme to model the dynamics of generic extreme-mass-ratio inspirals (EMRIs; stellar compact objects spiraling into a spinning supermassive black hole) and their gravitational-wave emission. The Chimera scheme is a…

广义相对论与量子宇宙学 · 物理学 2015-06-03 Carlos F. Sopuerta , Nicolas Yunes

We used two numerical models, namely the \texttt{CBwaves} and \texttt{SEOBNRE} algorithms, based on the post-Newtonian and effective-one-body approaches for binary black holes evolving on eccentric orbits. We performed 20.000 new…

广义相对论与量子宇宙学 · 物理学 2024-09-06 Balázs Kacskovics , Dániel Barta

We examine extreme mass-ratio inspirals (EMRIs) as probes of beyond-vacuum general relativistic effects, accounting for both astrophysical environments and scalar Gauss-Bonnet (sGB) gravity. In beyond-vacuum scenarios, the evolution of an…

广义相对论与量子宇宙学 · 物理学 2026-01-08 Tieguang Zi , Mostafizur Rahman , Shailesh Kumar

Extreme-mass-ratio inspirals (EMRIs) are promising gravitational-wave (GW) sources for space-based GW detectors. EMRI signals typically have long durations, ranging from several months to several years, necessitating highly accurate GW…

广义相对论与量子宇宙学 · 物理学 2025-01-27 Lu-Jia Xu , Shu-Cheng Yang , Wen-Biao Han , Xing-Yu Zhong , Run-Dong Tang , Yuan-Hao Zhang

Extreme mass ratio inspirals (EMRIs) are among the most interesting gravitational wave (GW) sources for space-borne GW detectors. However, successful GW data analysis remains challenging due to many issues, ranging from the difficulty of…

高能天体物理现象 · 物理学 2022-07-13 Xue-Ting Zhang , Chris Messenger , Natalia Korsakova , Man Leong Chan , Yi-Ming Hu , Jing-dong Zhang

Effective-one-body (EOB) numerical-relativity (NR) waveform models for spin-aligned binary black holes (BBHs), known as the SEOBNR waveform models, are based on the EOB theoretical framework and NR simulations. SEOBNR models have played an…

广义相对论与量子宇宙学 · 物理学 2020-03-04 Xiaolin Liu , Zhoujian Cao , Lijing Shao

The description of extreme-mass-ratio binary systems in the inspiral phase is a challenging problem in gravitational wave physics with significant relevance for the space interferometer LISA. The main difficulty lies in the evaluation of…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Carlos F. Sopuerta , Pablo Laguna

Extreme mass ratio inspirals (EMRIs) are compact binary systems characterized by a mass-ratio $q=m/M$ in the range $~10^{-9}-10^{-4}$ and represent primary gravitational wave (GW) sources for the forthcoming Laser Interferometer Space…

Gravitational waves from extreme mass-ratio inspirals (EMRIs), the inspirals of stellar-mass compact objects into massive black holes, are predicted to be observed by the Laser Interferometer Space Antenna (LISA). A sufficiently large…

广义相对论与量子宇宙学 · 物理学 2026-05-07 Shashwat Singh , Christian E. A. Chapman-Bird , Christopher P L Berry , John Veitch

Extreme Mass Ratio Inspirals (EMRIs) are one of the main gravitational wave (GW) sources for a future space detector, such as eLISA/NGO, and third generation ground-based detectors, like the Einstein Telescope. These systems present an…

广义相对论与量子宇宙学 · 物理学 2012-06-13 Jérôme Carré , Edward K. Porter