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Multi-messenger astronomy was galvanized by the detection of gravitational waves (GWs) from the binary neutron star (BNS) merger GW170817 and electromagnetic (EM) emission from the subsequent kilonova and short gamma ray burst. Maximizing…

High Energy Astrophysical Phenomena · Physics 2025-12-02 Nathan Steinle , Samar Safi-Harb , Matt Nicholl , Isabelle Worssam , Benjamin P. Gompertz

We present the fourth Open Gravitational-wave Catalog (4-OGC) of binary neutron star (BNS), binary black hole (BBH) and neutron star-black hole (NSBH) mergers. The catalog includes observations from 2015-2020 covering the first through…

High Energy Astrophysical Phenomena · Physics 2023-12-06 Alexander H. Nitz , Sumit Kumar , Yi-Fan Wang , Shilpa Kastha , Shichao Wu , Marlin Schäfer , Rahul Dhurkunde , Collin D. Capano

The third observing run of the LIGO/Virgo/KARGA collaboration reported a few neutron star - black hole (NSBH) merger events. While NSBH mergers have yet to receive extensive theoretical attention, they may have a promising electromagnetic…

High Energy Astrophysical Phenomena · Physics 2022-09-21 Erez Michaely , Smadar Naoz

The LIGO-Virgo-KAGRA Collaboration has detected over one hundred compact binary mergers in gravitational waves, but the formation history of these binaries remains an open question. Finding the host galaxies of these mergers will provide…

High Energy Astrophysical Phenomena · Physics 2024-02-16 Geoffrey Mo , Hsin-Yu Chen

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 detection of electromagnetic radiation (EM) accompanying the gravitational wave (GW) signal from the binary neutron star (BNS) merger GW170817 has revealed that these systems constitute at least a fraction of the progenitors of short…

High Energy Astrophysical Phenomena · Physics 2022-03-30 Rosalba Perna , M. Celeste Artale , Yi-Han Wang , Michela Mapelli , Davide Lazzati , Cecilia Sgalletta , Filippo Santoliquido

The mergers of double neutron star (NS-NS) and black hole (BH)-NS binaries are promising gravitational wave (GW) sources for Advanced LIGO and future GW detectors. The neutron-rich ejecta from such merger events undergoes rapid neutron…

High Energy Astrophysical Phenomena · Physics 2017-07-19 Brian D. Metzger

Advanced LIGO \& Advanced Virgo are detecting a large number of binary stellar origin black hole (BH) mergers. A promising channel for accelerated BH merger lies in active galactic nucleus (AGN) disks of gas around super-masssive black…

High Energy Astrophysical Phenomena · Physics 2020-10-07 B. McKernan , K. E. S. Ford , R. O'Shaughnessy

The LIGO-Virgo gravitational wave detectors have confidently observed 4 events involving neutron stars: two binary neutron star (BNS) mergers (GW170817 and GW190425), and two neutron star-black hole mergers (GW200105 and GW200115). However,…

High Energy Astrophysical Phenomena · Physics 2023-08-10 Sumeet Kulkarni , Surendra Padamata , Anuradha Gupta

The simultaneous detection of gravitational and electromagnetic waves from a binary neutron star merger has both solidified the link between neutron star mergers and short-duration gamma-ray bursts (GRBs) and demonstrated the ability of…

High Energy Astrophysical Phenomena · Physics 2018-10-10 Brandon K. Wiggins , Christopher L. Fryer , Joseph M. Smidt , Dieter H. Hartmann , Nicole Lloyd-Ronning , Chris Belcynski

Performing N-body simulations, we examine the dynamics of BH-BH (10 Msun each) and NS-NS (1.4 Msun each) binaries formed in a cluster and its implications for gravitational wave detection. A significant fraction of compact binaries are…

High Energy Astrophysical Phenomena · Physics 2015-06-16 Yeong-Bok Bae , Chunglee Kim , Hyung Mok Lee

We have performed detailed population synthesis on a large number (20 million) of binary systems in order to investigate the properties of massive double degenerate binaries. We have included new important results in our input physics in…

Astrophysics · Physics 2010-12-09 Rasmus Voss , Thomas M. Tauris

We review the formation and evolution of compact binary stars consisting of white dwarfs (WDs), neutron stars (NSs), and black holes (BHs). Binary NSs and BHs are thought to be the primary astrophysical sources of gravitational waves (GWs)…

Astrophysics · Physics 2015-06-24 Konstantin Postnov , Lev Yungelson

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

Next-generation gravitational wave (GW) observatories, such as the Einstein Telescope (ET) and Cosmic Explorer, will observe binary neutron star (BNS) mergers across cosmic history, providing precise parameter estimates for the closest…

In their most recent observing run, the LIGO-Virgo-KAGRA (LVK) Collaboration observed gravitational waves (GWs) from compact binary mergers with highly asymmetric mass ratios, including both binary black holes (BBHs) and neutron star--black…

High Energy Astrophysical Phenomena · Physics 2023-07-28 Madeline Oh , Maya Fishbach , Chase Kimball , Vicky Kalogera , Christine Ye

Binary black holes (BBHs) are one of the endpoints of isolated binary evolution, and their mergers a leading channel for gravitational wave events. Here, using the evolutionary code \textsc{StarTrack}, we study the statistical properties of…

High Energy Astrophysical Phenomena · Physics 2018-04-19 Rosalba Perna , Martyna Chruslinska , Alessandra Corsi , Krzysztof Belczynski

Black holes (BHs) with masses between $\sim 3-5M_{\odot}$, produced by a binary neutron star (BNS) merger, can further pair up with a neutron star or BH and merge again within a Hubble time. However, the astrophysical environments in which…

High Energy Astrophysical Phenomena · Physics 2025-11-11 Parthapratim Mahapatra , Debatri Chattopadhyay , Anuradha Gupta , Fabio Antonini , Marc Favata , B. S. Sathyaprakash , K. G. Arun

Short gamma-ray bursts are believed to originate from the merger of two compact objects. If this scenario is correct, these bursts will be accompanied by the emission of strong gravitational waves, detectable by current or planned GW…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Alexander Dietz

The long wait for the detection of merging black hole -- neutron star (BH--NS) binaries is finally over with the announcement by the LIGO/Virgo/Kagra collaboration of GW200105 and GW200115. Remarkably, the primary of GW200115 has a negative…

High Energy Astrophysical Phenomena · Physics 2021-09-29 Giacomo Fragione , Abraham Loeb , Frederic A. Rasio