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We demonstrate Bayesian analyses of the complete gravitational-wave spectrum of binary neutron star mergers events with the next-generation detector Einstein Telescope. Our mock analyses are performed for 20 different signals using the…

General Relativity and Quantum Cosmology · Physics 2026-02-12 Giulia Huez , Sebastiano Bernuzzi , Matteo Breschi , Rossella Gamba

We present fully GRMHD simulations of the merger of binary neutron star (BNS) systems. We consider BNSs producing a hypermassive neutron star (HMNS) that collapses to a spinning black hole (BH) surrounded by a magnetized accretion disk in a…

High Energy Astrophysical Phenomena · Physics 2016-10-31 Takumu Kawamura , Bruno Giacomazzo , Wolfgang Kastaun , Riccardo Ciolfi , Andrea Endrizzi , Luca Baiotti , Rosalba Perna

Gravitational wave observations of binary neutron star mergers provide valuable information about neutron star structure and the equation of state of dense nuclear matter. Numerous methods have been proposed to analyze the population of…

High Energy Astrophysical Phenomena · Physics 2022-02-23 Jacob Golomb , Colm Talbot

We present new (3+1)D numerical relativity simulations of the binary neutron star (BNS) merger and postmerger phase. We focus on a previously inaccessible region of the binary parameter space spanning the binary's mass-ratio…

General Relativity and Quantum Cosmology · Physics 2017-02-01 Tim Dietrich , Maximiliano Ujevic , Wolfgang Tichy , Sebastiano Bernuzzi , Bernd Bruegmann

The rate and location of Binary Neutron Star (BNS) mergers are determined by a combination of the star formation history and the Delay Time Distribution (DTD) function. In this paper, we couple the star formation rate histories (SFRHs) from…

High Energy Astrophysical Phenomena · Physics 2021-03-31 Jonah C. Rose , Paul Torrey , K. H. Lee , I. Bartos

Binary neutron stars (BNSs) and neutron star--black hole (NSBH) binaries are two of the most promising gravitational wave (GW) sources to probe matter effects. Upcoming observing runs of LIGO-Virgo-KAGRA detectors and future third…

General Relativity and Quantum Cosmology · Physics 2024-03-07 Dixeena Lopez , Shubhanshu Tiwari , Michael Ebersold

Observations of the properties of multiple coalescing neutron stars will simultaneously provide insight into neutron star mass and spin distribution, the neutron star merger rate, and the nuclear equation of state. Not all merging binaries…

General Relativity and Quantum Cosmology · Physics 2020-01-08 Daniel Wysocki , Richard O'Shaughnessy , Leslie Wade , Jacob Lange

Inspirals and mergers of black hole (BHs) and/or neutron star (NSs) binaries are expected to be abundant sources for ground-based gravitational-wave (GW) detectors. We assess the capabilities of Advanced LIGO and Virgo to measure component…

High Energy Astrophysical Phenomena · Physics 2015-07-15 Tyson B. Littenberg , Benjamin Farr , Scott Coughlin , Vicky Kalogera , Daniel E. Holz

Rapidly growing catalogs of compact binary mergers from advanced gravitational-wave detectors allow us to explore the astrophysics of massive stellar binaries. Merger observations can constrain the uncertain parameters that describe the…

Solar and Stellar Astrophysics · Physics 2023-06-28 Jeff Riley , Ilya Mandel

Recent detections of gravitational waves from mergers of neutron stars (NSs) and black holes (BHs) in the low and high-end mass gap regimes pose a puzzle to standard stellar and binary evolution theory. Mass-gap mergers may originate from…

High Energy Astrophysical Phenomena · Physics 2021-08-09 Adrian S. Hamers , Giacomo Fragione , Patrick Neunteufel , Bence Kocsis

We perform a first study of the impact of varying two components of the initial conditions in binary population synthesis of compact binary mergers - the initial mass function, which is made metallicity- and star formation rate-dependent,…

High Energy Astrophysical Phenomena · Physics 2024-11-27 L. M. de Sá , L. S. Rocha , A. Bernardo , R. R. A. Bachega , J. E. Horvath

Gravitational-wave detectors are unveiling a population of binary black hole (BBH) mergers out to redshifts $z \approx 1$, and are starting to constrain how the BBH population evolves with redshift. We present predictions for the redshift…

High Energy Astrophysical Phenomena · Physics 2024-06-05 Claire S. Ye , Maya Fishbach

We revisit the population properties of neutron star-black hole (NSBH) mergers using low-mass compact binary coalescences reported through GWTC-4. Employing pyEFPE, an inspiral-only waveform model that captures both orbital eccentricity and…

High Energy Astrophysical Phenomena · Physics 2026-03-25 Gonzalo Morras , Geraint Pratten , Patricia Schmidt

Binary neutron star (NS) mergers are among the most promising sources of gravitational waves (GWs), as well as candidate progenitors for short Gamma-Ray Bursts (SGRBs). Depending on the total initial mass of the system, and the NS equation…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Simone Dall'Osso , Bruno Giacomazzo , Rosalba Perna , Luigi Stella

The origin of half of the rapid neutron-capture nucleosynthesis (r-process) elements in the Universe remains an open question. Binary neutron star (BNS) mergers have been shown to face difficulties in reproducing the observed r-process…

High Energy Astrophysical Phenomena · Physics 2026-05-21 Joon Young Lee , Hsin-Yu Chen , Muhammed Saleem

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

The binary neutron star (BNS) mass distribution measured with gravitational-wave observations has the potential to reveal information about the dense matter equation of state, supernova physics, the expansion rate of the universe, and tests…

High Energy Astrophysical Phenomena · Physics 2022-02-16 Sylvia Biscoveanu , Colm Talbot , Salvatore Vitale

The joint observation of the gravitational-wave and electromagnetic signal from the binary neutron-star merger GW170817 allowed for a new independent measurement of the Hubble constant $H_0$, albeit with an uncertainty of about 15\% at…

General Relativity and Quantum Cosmology · Physics 2021-05-11 Juan Calderón Bustillo , Samson H. W. Leong , Tim Dietrich , Paul D. Lasky

Stellar models indicate that the core compactness of a star, which is a common proxy for its explodability in a supernova, does not increase monotonically with the star's mass. Rather, the core compactness dips sharply over a range of…

High Energy Astrophysical Phenomena · Physics 2024-11-14 Christian Adamcewicz , Paul D. Lasky , Eric Thrane , Ilya Mandel

In May 2023, the LIGO Livingston observatory detected the likely black hole-neutron star (BHNS) merger GW230529_181500. That event is expected to be the merger of a 2.5-4.5 $M_{\odot}$ primary with a secondary compact object of mass between…

High Energy Astrophysical Phenomena · Physics 2025-04-18 Tia Martineau , Francois Foucart , Mark Scheel , Matthew Duez , Lawrence Kidder , Harald Pfeiffer