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LIGO and Virgo recently observed the first binary neutron star merger, demonstrating that gravitational-waves offer the ability to probe how matter behaves in one of the most extreme environments in the Universe. However, the…

General Relativity and Quantum Cosmology · Physics 2018-07-11 Ian Harry , Tanja Hinderer

We study the detectability of postmerger QCD phase transitions in neutron star binaries with next-generation gravitational-wave detectors Cosmic Explorer and Einstein Telescope. We perform numerical relativity simulations of neutron star…

General Relativity and Quantum Cosmology · Physics 2026-01-13 Aviral Prakash , Ish Gupta , Matteo Breschi , Rahul Kashyap , David Radice , Sebastiano Bernuzzi , Domenico Logoteta , B. S. Sathyaprakash

Gravitational waves in the postmerger phase of binary neutron star mergers may become detectable with planned upgrades of existing gravitational-wave detectors or with more sensitive next-generation detectors. The construction of template…

General Relativity and Quantum Cosmology · Physics 2024-05-16 Dimitrios Pesios , Ioannis Koutalios , Dimitris Kugiumtzis , Nikolaos Stergioulas

Neutron star (NS) binaries can be potentially intriguing gravitational wave (GW) sources, with both high- and low-frequency radiations from the possibly aspherical individual stars and the binary orbit, respectively. The successful…

High Energy Astrophysical Phenomena · Physics 2024-01-23 Wen-Fan Feng , Jie-Wen Chen , Tan Liu , Yan Wang , Soumya D. Mohanty

Future gravitational wave detections of merging binary neutron star systems have the possibility to tightly constrain the equation of state of dense nuclear matter. In order to extract such constraints, gravitational waveform models need to…

Gravitational wave observations can potentially measure properties of neutron star equations of state by measuring departures from the point-particle limit of the gravitational waveform produced in the late inspiral of a neutron star…

General Relativity and Quantum Cosmology · Physics 2011-10-19 Charalampos Markakis , Jocelyn S. Read , Masaru Shibata , Koji Uryu , Jolien D. E. Creighton , John L. Friedman , Benjamin D. Lackey

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

Gravitational waves emitted by coalescing binary systems containing neutron stars (or other compact objects) carry signatures of the stars' internal equation of state, notably, through the influence of tidal deformations during the binary's…

General Relativity and Quantum Cosmology · Physics 2020-03-11 Batoul Banihashemi , Justin Vines

GW170817, the milestone gravitational-wave event originated from a binary neutron star merger, has allowed scientific community to place a constraint on the equation of state of neutron stars by extracting the leading-order,…

General Relativity and Quantum Cosmology · Physics 2018-12-19 Xisco Jimenez-Forteza , Tiziano Abdelsalhin , Paolo Pani , Leonardo Gualtieri

The vast majority of gravitational-wave signals from stellar-mass compact binary mergers are too weak to be individually detected with present-day instruments and instead contribute to a faint, persistent background. This astrophysical…

High Energy Astrophysical Phenomena · Physics 2024-08-19 Arianna I. Renzini , Thomas A. Callister , Katerina Chatziioannou , Will M. Farr

On August 17, 2017 at 12:41:04 UTC the Advanced LIGO and Advanced Virgo gravitational-wave detectors made their first observation of a binary neutron star inspiral. The signal, GW170817, was detected with a combined signal-to-noise ratio of…

General Relativity and Quantum Cosmology · Physics 2017-10-17 The LIGO Scientific Collaboration , The Virgo Collaboration

A binary compact object early in its inspiral phase will be picked up by its nearly monochromatic gravitational radiation by LISA. But even this innocuous appearing candidate poses interesting detection challenges. The data that will be…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Aaron Rogan , Sukanta Bose

Motivated by future opportunities in gravitational-wave astronomy and the ongoing effort to constrain physics under extreme conditions, we consider the signature of individual mode resonances excited during the inspiral of binary systems…

General Relativity and Quantum Cosmology · Physics 2025-08-11 P. Pnigouras , N. Andersson , F. Gittins , A. R. Counsell

Transient orbital resonances have recently been identified as potentially important to the inspiral of small bodies into large black holes. These resonances occur as the inspiral evolves through moments in which two fundamental orbital…

General Relativity and Quantum Cosmology · Physics 2015-06-16 Uchupol Ruangsri , Scott A. Hughes

The dynamical tide can play an important role in the orbital motion of close eccentric double white dwarf binaries. As the launching of the space-based gravitational-wave detector, the Laser Interferometer Space Antenna (LISA), is just…

General Relativity and Quantum Cosmology · Physics 2024-05-24 Shu Yan Lau , Kent Yagi , Phil Arras

In a recent investigation of the effects of precession on the anticipated detection of gravitational-wave inspiral signals from compact object binaries with moderate total masses, we found that (i) if precession is ignored, the inspiral…

General Relativity and Quantum Cosmology · Physics 2009-11-07 P. Grandclement , V. Kalogera

Double compact objects (neutron stars and black holes) found in binaries with small orbital separations are known to spiral in and are expected to coalesce eventually because of the emission of gravitational waves. Such inspiral and merger…

Astrophysics · Physics 2009-11-06 V. Kalogera , K. Belczynski

The higher-multipoles of gravitational wave signals from coalescing compact binaries play a vital role in the accurate reconstruction of source properties, bringing about a deeper and nuanced understanding of fundamental physics and…

General Relativity and Quantum Cosmology · Physics 2021-03-17 Soumen Roy , Anand S. Sengupta , K. G. Arun

Inspiralling compact binaries as standard sirens will soon become an invaluable tool for cosmology when advanced interferometric gravitational-wave detectors begin their observations in the coming years. However, a degeneracy in the…

General Relativity and Quantum Cosmology · Physics 2014-10-15 Chris Messenger , Kentaro Takami , Sarah Gossan , Luciano Rezzolla , B. S. Sathyaprakash

We present a theoretical background for the data analysis of the gravitational-wave signals from spinning neutron stars for Earth-based laser interferometric detectors. We introduce a detailed model of the signal including both the…

General Relativity and Quantum Cosmology · Physics 2009-12-30 Piotr Jaranowski , Andrzej Królak , Bernard F. Schutz