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We show that the loudest extreme mass-ratio inspirals (EMRIs) detected by the future space-based gravitational wave detector LISA can be used as dark standard sirens, statistically matching their sky localisation region with mock galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2021-09-30 Danny Laghi

Extreme Mass Ratio Inspirals (EMRIs) can be classified as dry EMRIs and wet EMRIs based on their formation mechanisms. Dry (or the "loss-cone") EMRIs, previously considered as the main EMRI sources for the Laser Interferometer Space…

High Energy Astrophysical Phenomena · Physics 2021-09-08 Zhen Pan , Zhenwei Lyu , Huan Yang

In its final year of inspiral, a stellar mass ($1 - 10 M_\odot$) body orbits a massive ($10^5 - 10^7 M_\odot$) compact object about $10^5$ times, spiralling from several Schwarzschild radii to the last stable orbit. These orbits are deep in…

General Relativity and Quantum Cosmology · Physics 2009-10-31 Scott A. Hughes

The capture of compact objects by massive black holes in galaxies or dwarf galaxies will generate short gravitational wave signals, called extreme-mass-ratio bursts (EMRBs), before evolving into extreme-mass-ratio inspirals. Their detection…

General Relativity and Quantum Cosmology · Physics 2023-01-04 Hui-Min Fan , Shiyan Zhong , Zheng-Cheng Liang , Zheng Wu , Jian-dong Zhang , Yi-Ming Hu

Idealized models are used to illustrate the potential of the Laser Interferometer Space Antenna (LISA) as a probe of the largely unknown population of cosmologically-distant Massive Black Holes (MBHs) and as a tool to measure their masses…

Astrophysics · Physics 2009-11-07 Kristen Menou

A consequence of a non-zero occupation fraction of massive black holes (MBHs) in dwarf galaxies is that these MBHs can become residents of larger galaxy halos via hierarchical merging and tidal stripping. Depending on the parameters of…

Astrophysics of Galaxies · Physics 2025-06-17 Jillian Bellovary , Yuantong Luo , Thomas Quinn , Ferah Munshi , Michael Tremmel , James Wadsley

Extreme-mass-ratio inspiral (EMRI) is an important gravitational-wave (GW) source and it normally consists of one stellar-mass black hole (BH) whirling closely around a supermassive black hole (SMBH). In this Letter, we demonstrate that the…

High Energy Astrophysical Phenomena · Physics 2018-10-02 Xian Chen , Wen-Biao Han

This work investigates the impact of streams of transient, non-Gaussian noise artifacts or "glitches" on the parameter estimation of extreme mass ratio inspirals (EMRI) in the Laser Interferometer Space Antenna (LISA). Glitches cause biased…

General Relativity and Quantum Cosmology · Physics 2026-05-21 Amin Boumerdassi , Matthew C. Edwards , Avi Vajpeyi , Ollie Burke

Captures of compact objects (COs) by massive black holes in galactic nuclei (aka ``extreme-mass-ratio inspirals'') will be an important source for LISA. However, a large fraction of captures will not be individually resolvable, and so will…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Leor Barack , Curt Cutler

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…

High Energy Astrophysical Phenomena · Physics 2022-07-13 Xue-Ting Zhang , Chris Messenger , Natalia Korsakova , Man Leong Chan , Yi-Ming Hu , Jing-dong Zhang

Primordial black hole (PBH), which can be naturally produced in the early universe, remains a promising dark matter candidate . It can merge with a supermassive black hole (SMBH) in the center of a galaxy and generate gravitational wave…

Cosmology and Nongalactic Astrophysics · Physics 2019-01-09 Huai-Ke Guo , Jing Shu , Yue Zhao

Among the potential milliHz gravitational wave (GW) sources for the upcoming space-based interferometer LISA are extreme- or intermediate-mass ratio inspirals (EMRI/IMRIs). These events involve the coalescence of supermassive black holes in…

High Energy Astrophysical Phenomena · Physics 2021-03-09 A. Derdzinski , D. D'Orazio , P. Duffell , Z. Haiman , A. Macfadyen

We investigate the gravitational wave emission from extreme mass ratio inspirals, key targets for the upcoming space-based detector LISA, considering the scenario where the lighter black hole in the binary is endowed by a long-lived,…

General Relativity and Quantum Cosmology · Physics 2024-12-20 Matteo Della Rocca , Georgios Antoniou , Leonardo Gualtieri , Andrea Maselli

The events detected by the LIGO Virgo KAGRA collaboration over a period of 10 years have yielded a treasure trove of signals from compact binary coalescences. None of these events have shown a confident signature of eccentricity. With…

General Relativity and Quantum Cosmology · Physics 2026-03-11 Johann Fernandes , Praveer Tiwari , Archana Pai

We use the ASTRID cosmological simulation to forecast massive black hole (MBH) mergers detectable by Laser Interferometer Space Antenna (LISA) down to $z=0$. ASTRID directly models MBH dynamical friction, allowing a realistic tracking of…

Astrophysics of Galaxies · Physics 2025-11-11 Bonny Y. Wang , Yihao Zhou , William Chen , Nianyi Chen , Tiziana Di Matteo , Rupert Croft , Simeon Bird , Yueying Ni

We estimate the rate of inspiral for a population of stellar mass BHs in the star cluster around the super massive black hole at the center of Milky Way mass galaxies. Our approach is based on an orbit averaged Fokker Planck approach. This…

High Energy Astrophysical Phenomena · Physics 2021-03-17 Razieh Emami , Abraham Loeb

Gravitational waves can probe the existence of planetary-mass primordial black holes. Considering a mass range of $[10^{-7}-10^{-2}]M_\odot$, inspiraling primordial black holes could emit either continuous gravitational waves,…

High Energy Astrophysical Phenomena · Physics 2021-05-25 Andrew L. Miller , Sébastien Clesse , Federico De Lillo , Giacomo Bruno , Antoine Depasse , Andres Tanasijczuk

Captures of stellar-mass compact objects (COs) by massive ($\sim 10^6 M_\odot$) black holes (MBHs) are potentially an important source for LISA, the proposed space-based gravitational-wave (GW) detector. The orbits of the inspiraling COs…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Leor Barack , Curt Cutler

If binary intermediate-mass black holes (IMBHs; with masses between 100 and $10^4 \Msun$) form in dense stellar clusters, their inspiral will be detectable with the planned Laser Interferometer Space Antenna (LISA) out to several Gpc. Here…

Solar and Stellar Astrophysics · Physics 2014-11-18 Pau Amaro-Seoane , Cole Miller , Marc Freitag

Intermediate Mass Ratio Inspirals (IMRIs) will be observable with space-based gravitational wave detectors such as the Laser Interferometer Space Antenna (LISA). To this end, the environmental effects in such systems have to be modeled and…

General Relativity and Quantum Cosmology · Physics 2023-04-19 Niklas Becker , Laura Sagunski