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Black hole-neutron star mergers resulting in the disruption of the neutron star and the formation of an accretion disk and/or the ejection of unbound material are prime candidates for the joint detection of gravitational-wave and…

The precise measurement of neutron star (NS) spins can provide important insight into the formation and evolution of compact binaries containing NS. While traditional methods of NS spin measurement rely on pulsar observations, gravitational…

High Energy Astrophysical Phenomena · Physics 2024-08-01 Ish Gupta

We explore the degeneracy between mass and spin in gravitational waveforms emitted by black-hole binary coalescences. We focus on spin-aligned waveforms and obtain our results using phenomenological models that were tuned to…

General Relativity and Quantum Cosmology · Physics 2013-05-30 Emily Baird , Stephen Fairhurst , Mark Hannam , Patricia Murphy

The detection of gravitational waves from coalescing binary neutron stars represents another milestone in gravitational-wave astronomy. However, since LIGO is currently not as sensitive to the merger/ringdown part of the waveform, the…

General Relativity and Quantum Cosmology · Physics 2018-12-03 Huan Yang , William E. East , Luis Lehner

The increase in the sensitivity of gravitational wave interferometers will bring additional detections of binary black hole and double neutron star mergers. It will also very likely add many merger events of black hole - neutron star…

High Energy Astrophysical Phenomena · Physics 2021-09-06 Bhavesh Khamesra , Miguel Gracia-Linares , Pablo Laguna

GW200115 was the second merger of a black hole and a neutron star confidently detected through gravitational waves. Inference on the signal allows for a large black hole spin misaligned with the orbital angular momentum, but shows little…

High Energy Astrophysical Phenomena · Physics 2021-11-24 Ilya Mandel , Rory J. E. Smith

In August 2017, the first detection of a binary neutron star merger, GW170817, made it possible to study neutron stars in compact binary systems using gravitational waves. Despite being the loudest gravitational wave event detected to date…

General Relativity and Quantum Cosmology · Physics 2023-01-24 Stephanie M. Brown , Collin D. Capano , Badri Krishnan

Recent gravitational wave observations include possible detections of black hole - neutron star binary mergers. As with binary black hole mergers, numerical simulations help characterize the sources. For binary systems with neutron star…

General Relativity and Quantum Cosmology · Physics 2024-04-16 Bing-Jyun Tsao , Bhavesh Khamesra , Miguel Gracia-Linares , Pablo Laguna

While there are a number of proposed formation channels for subsolar mass compact objects, including black holes formed primordially, or neutron stars that form in collapsar disks, there have yet to be any conclusive observations of such…

High Energy Astrophysical Phenomena · Physics 2026-03-27 Maxence Corman , William E. East , Jocelyn S. Read

Although gravitational-wave signals from exceptional low-mass compact binary coalescences, like GW170817, may carry matter signatures that differentiate the source from a binary black hole system, only one out of every eight events detected…

High Energy Astrophysical Phenomena · Physics 2020-12-02 Reed Essick , Philippe Landry

Mergers of black hole (BH) and neutron star (NS) binaries are of interest since the emission of gravitational waves (GWs) can be followed by an electromagnetic (EM) counterpart, which could power short gamma-ray bursts. Until now,…

High Energy Astrophysical Phenomena · Physics 2021-03-17 Giacomo Fragione , Abraham Loeb

Current template-based gravitational-wave searches for compact binary mergers neglect the general relativistic phenomenon of spin-induced orbital precession. Owing to their asymmetric masses, gravitational-waves from neutron star-black hole…

High Energy Physics - Experiment · Physics 2026-01-28 Ian Harry , Charlie Hoy

The LIGO and Virgo detectors have directly observed gravitational waves from mergers of pairs of stellar-mass black holes, along with a smaller number of mergers involving neutron stars. These observations raise the hope that compact object…

High Energy Astrophysical Phenomena · Physics 2022-05-11 Ilya Mandel , Alison Farmer

The identification of the first confirmed neutron star - black hole (NS-BH) binary mergers by the LIGO, Virgo and KAGRA collaboration provides the opportunity to investigate the properties of the early sample of confirmed and candidate…

High Energy Astrophysical Phenomena · Physics 2022-01-19 B. P. Gompertz , M. Nicholl , P. Schmidt , G. Pratten , A. Vecchio

We analyze the distinguishability of populations of coalescing binary neutron stars, neutron-star black-hole binaries, and binary black holes, whose gravitational-wave signatures are expected to be observed by the advanced network of…

High Energy Astrophysical Phenomena · Physics 2015-05-05 Ilya Mandel , Carl-Johan Haster , Michal Dominik , Krzysztof Belczynski

Gravitational wave-forms from coalescences of binary black hole systems and binary neutron star systems with low tidal effects can hardly be distinguished if the two systems have similar masses. In the absence of discriminating power based…

General Relativity and Quantum Cosmology · Physics 2022-04-13 J. -F. Coupechoux , A. Arbey , R. Chierici , H. Hansen , J. Margueron , V. Sordini

Neutron star (binary neutron star and neutron star - black hole) mergers are believed to produce short-duration gamma-ray bursts. They are also believed to be the dominant source of gravitational waves to be detected by the advanced LIGO…

High Energy Astrophysical Phenomena · Physics 2015-10-14 Chris L. Fryer , Krzysztoff Belczynski , Enrico Ramirez-Ruiz , Stephan Rosswog , Gang Shen , Andrew W. Steiner

The observation of gravitational waves from merging black holes and neutron stars provides a unique opportunity to discern information about their astrophysical environment. Two signatures that are considered powerful tracers to distinguish…

High Energy Astrophysical Phenomena · Physics 2026-03-18 Gonzalo Morras , Geraint Pratten , Patricia Schmidt

Measurements of black-hole spins from gravitational-wave observations of black-hole binaries with ground-based detectors are expected to be hampered by partial degeneracies in the gravitational-wave phasing: between the two component spins,…

General Relativity and Quantum Cosmology · Physics 2016-04-27 Michael Pürrer , Mark Hannam , Frank Ohme

The mergers of binaries containing neutron stars and stellar-mass black holes are the most promising sources for direct detection in gravitational waves by the interferometers Advanced LIGO and Virgo over the next few years. The concurrent…

High Energy Astrophysical Phenomena · Physics 2016-06-29 Rodrigo Fernández , Brian D. Metzger
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