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Gravitational lensing of gravitational waves (GWs) is a powerful probe of the matter distribution in the universe. Here we revisit the wave-optics effects induced by dark matter (DM) halos on the GW signals of merging massive black hole…

Cosmology and Nongalactic Astrophysics · Physics 2022-02-23 Zucheng Gao , Xian Chen , Yi-Ming Hu , Jian-Dong Zhang , Shunjia Huang

The inspiral, merger, and ringdown of Massive Black Hole Binaries (MBHBs) is one the main sources of Gravitational Waves (GWs) for the future Laser Interferometer Space Antenna (LISA), an ESA-led mission in the implementation phase. It is…

General Relativity and Quantum Cosmology · Physics 2025-03-25 Iván Martín Vílchez , Carlos F. Sopuerta

One of the scientific objectives of the Laser Interferometer Space Antenna (LISA) is to probe the expansion of the Universe using gravitational wave observations. Indeed, as gravitational waves from the coalescence of a massive black hole…

Cosmology and Nongalactic Astrophysics · Physics 2024-07-17 Alberto Mangiagli , Chiara Caprini , Sylvain Marsat , Lorenzo Speri , Robert R. Caldwell , Nicola Tamanini

Beyond LISA, proposed space-based gravitational wave (GW) missions aim to explore the sub-millihertz to microhertz frequency band, with one key objective being the detection of massive binary black hole (MBBH) mergers across cosmic…

General Relativity and Quantum Cosmology · Physics 2025-09-25 Renjie Wang , Yumeng Xu , Gang Wang , Bin Hu , Rong-Gen Cai

The dynamical evolution of binaries of intermediate-massive black holes (IMBHs, massive black holes with a mass ranging between $10^2$ and $10^4 M_{\odot}$) in stellar clusters has recently received an increasing amount of attention. This…

Astrophysics of Galaxies · Physics 2015-05-13 Pau Amaro-Seoane , Christoph Eichhorn , Edward K. Porter , Rainer Spurzem

The Laser Interferometer Space Antenna (LISA), due for launch in the mid 2030s, is expected to observe gravitational waves (GW)s from merging massive black hole binaries (MBHB)s. These signals can last from days to months, depending on the…

Instrumentation and Methods for Astrophysics · Physics 2023-12-06 Connor R. Weaving , Laura K. Nuttall , Ian W. Harry , Shichao Wu , Alexander Nitz

The space-based gravitational wave detector LISA will observe mergers of massive black hole binary systems (MBHBs) to cosmological distances, as well as inspiralling stellar-origin (or stellar-mass) binaries (SBHBs) years before they enter…

General Relativity and Quantum Cosmology · Physics 2021-04-21 Sylvain Marsat , John G. Baker , Tito Dal Canton

We study the angular resolution of the gravitational wave detector LISA and show that numerical relativity can drastically improve the accuracy of position location for coalescing Super Massive Black Hole (SMBH) binaries. For systems with…

General Relativity and Quantum Cosmology · Physics 2008-06-15 Stanislav Babak , Mark Hannam , Sascha Husa , Bernard Schutz

The advent of gravitational wave (GW) and multi-messenger astronomy has stimulated the research on the formation mechanisms of binary black holes (BBHs) observed by LIGO/Virgo. In literature, the progenitors of these BBHs could be…

General Relativity and Quantum Cosmology · Physics 2025-03-28 Zu-Cheng Chen , Fan Huang , Qing-Guo Huang

Laser Interferometer Space Antenna (LISA) observations of massive black hole binaries (MBHBs) will provide long duration inspiral signals with high signal-to-noise ratio (SNR) data, ideal for testing general relativity (GR) in the…

General Relativity and Quantum Cosmology · Physics 2025-12-12 Manuel Piarulli , Sylvain Marsat , Elise M. Sänger , Alessandra Buonanno , Jan Steinhoff , Nicola Tamanini

Pulsar Timing Array (PTA) experiments worldwide recently reported evidence of a nHz stochastic gravitational wave background (sGWB) compatible with the existence of slowly inspiralling massive black hole (MBH) binaries (MBHBs). The shape of…

In the frequency band of Laser Interferometer Space Antenna (LISA), extensive research has been conducted on the impact of foreground confusion noise generated by galactic binaries within the Milky Way galaxy. Additionally, the recent…

Cosmology and Nongalactic Astrophysics · Physics 2023-09-26 Fan Huang , Yan-Chen Bi , Zhoujian Cao , Qing-Guo Huang

Stellar-mass black hole binaries (BHBs) in galactic nuclei are gravitationally perturbed by the central supermassive black hole (SMBH) of the host galaxy, potentially inducing strong eccentricity oscillations through the eccentric…

High Energy Astrophysical Phenomena · Physics 2024-08-21 Alan M. Knee , Jess McIver , Smadar Naoz , Isobel M. Romero-Shaw , Bao-Minh Hoang , Evgeni Grishin

Unlike traditional electromagnetic measurements, gravitational-wave observations are not affected by crowding and extinction. For this reason, compact object binaries orbiting around a massive black hole can be used as probes of the inner…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Kaze W. K. Wong , Vishal Baibhav , Emanuele Berti

Supermassive black hole binaries (SMBHBs) are expected to be detected by the future space-based gravitational-wave detector LISA with a large signal-to-noise ratio (SNR). This prospect enhances the possibility of differentiating higher…

General Relativity and Quantum Cosmology · Physics 2024-10-01 Chantal Pitte , Quentin Baghi , Sylvain Marsat , Marc Besançon , Antoine Petiteau

Gravitational waves (GWs) from massive black hole (MBH) mergers will provide a novel way to probe the high-redshift universe and are key to understanding galactic dynamics and evolution. In this work, we analyze MBH mergers, their GW…

High Energy Astrophysical Phenomena · Physics 2025-11-19 Sourabh Magare , Abhinav Roy , Shasvath J. Kapadia , Nishikanta Khandai , R. Srianand

Important scientific discoveries should be backed by high statistical significance. In the 2030s, multiple space-based gravitational wave detectors are expected to operate. While many works aim to achieve quick and reliable detection and…

General Relativity and Quantum Cosmology · Physics 2026-03-03 Hong-Yu Chen , En-Kun Li , Yi-Ming Hu

The remarkable sensitivity achieved by the planned Laser Interferometer Space Antenna (LISA) will allow us to observe gravitational-wave signals from the mergers of massive black hole binaries (MBHBs) with signal-to-noise ratio (SNR) in the…

General Relativity and Quantum Cosmology · Physics 2025-12-22 Sophia Yi , Francesco Iacovelli , Sylvain Marsat , Digvijay Wadekar , Emanuele Berti

Massive black holes (MBHs) are crucial in shaping their host galaxies. How the MBH co-evolves with its host galaxy is a pressing problem in astrophysics and cosmology. The valuable information carried by the binary MBH is encoded in the…

High Energy Astrophysical Phenomena · Physics 2023-10-04 Yi Gong , Zhoujian Cao , Junjie Zhao , Lijing Shao

For space-based gravitational wave (GW) detection, the main noise source for massive black hole binaries (MBHBs) is attributed to approximately $10^7$ double white dwarf binaries in the foreground. For a GW source, the amplitude of the…

High Energy Astrophysical Phenomena · Physics 2024-09-27 Pan Guo , Hong-Bo Jin , Cong-Feng Qiao , Yue-Liang Wu
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