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We estimate binary compact object merger detection rates for LIGO, including the binaries formed in ellipticals long ago. Specifically, we convolve hundreds of model realizations of elliptical- and spiral-galaxy population syntheses with a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 R. O'Shaughnessy , V. Kalogera , K. Belczynski

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

Inspiraling binary neutron stars are expected to be one of the most significant sources of gravitational-wave signals for the new generation of advanced ground-based detectors. We investigate how well we could hope to measure properties of…

We present a study aimed at quantifying the detectability of radio counterparts of binary neutron star (BNS) mergers with total masses $\lesssim 3$\,M$_{\odot}$, which may form neutron star (NS) remnants. We focus on mergers localized by…

High Energy Astrophysical Phenomena · Physics 2025-07-01 Kara Merfeld , Alessandra Corsi

With the rapid advancements in next-generation ground-based gravitational wave (GW) detectors, it is anticipated that $10^3$-$10^5$ binary neutron star (BNS) mergers per year will be detected, with a significant fraction accompanied by…

High Energy Astrophysical Phenomena · Physics 2025-12-04 Zhiwei Chen , Youjun Lu , Hao Ma , Qingbo Chu

In this paper, we investigate the properties of binary neutron stars (BNSs) and their mergers by combining population synthesis models for binary stellar evolution (BSE) with cosmological galaxy formation and evolution models. We obtain…

Astrophysics of Galaxies · Physics 2021-10-20 Qingbo Chu , Shenghua Yu , Youjun Lu

Advanced LIGO and Virgo have so far detected gravitational waves from 10 binary black hole mergers (BBH) and 1 binary neutron star merger (BNS). In the future, we expect the detection of many more marginal sources, since compact binary…

General Relativity and Quantum Cosmology · Physics 2019-01-03 Yiwen Huang , Hannah Middleton , Ken K. -Y. Ng , Salvatore Vitale , John Veitch

The merger of close binary systems containing two neutron stars should produce a burst of gravitational waves, as predicted by the theory of general relativity. A reliable estimate of the double-neutron-star merger rate in the Galaxy is…

Double neutron star (DNS) systems could serve as intriguing dual-line gravitational-wave (GW) sources, emitting both high- and low-frequency GWs, arising respectively from the asymmetric spinning bodies of individual neutron stars (NSs) and…

General Relativity and Quantum Cosmology · Physics 2025-09-03 Wen-Fan Feng , Lijing Shao

Radio pulsars provide some of the most important constraints for our understanding of matter at supranuclear densities. So far, these constraints are mostly given by precision mass measurements of neutron stars (NS). By combining single…

Solar and Stellar Astrophysics · Physics 2020-07-21 Huanchen Hu , Michael Kramer , Norbert Wex , David J. Champion , Marcel S. Kehl

We have surveyed all 22 known Galactic globular clusters observable with the Arecibo radio telescope and within 70kpc of the Sun for radio pulsations at ~1.4GHz. Data were taken with the Wideband Arecibo Pulsar Processor, which provided the…

Astrophysics · Physics 2009-11-13 J. W. T. Hessels , S. M. Ransom , I. H. Stairs , V. M. Kaspi , P. C. C. Freire

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…

The MMGPS-L is the most sensitive pulsar survey in the Southern Hemisphere. We present a follow-up study of one of these new discoveries, PSR J1208-5936, a 28.71-ms recycled pulsar in a double neutron star system with an orbital period of…

Most observed neutron stars have masses around 1.4 $M_\odot$, consistent with current formation mechanisms. To date, no sub-solar mass neutron star has been observed. Observing a low-mass neutron star would be a significant milestone,…

High Energy Astrophysical Phenomena · Physics 2025-02-26 Keisi Kacanja , Alexander H. Nitz

We show that the inferred merger rate and chirp masses of binary black holes (BBHs) detected by advanced LIGO (aLIGO) can be used to constrain the rate of double neutron star (DNS) and neutron star - black hole (NSBH) mergers in the…

Instrumentation and Methods for Astrophysics · Physics 2017-10-27 Anuradha Gupta , K. G. Arun , B. S. Sathyaprakash

We estimate the coalescence rate of close binaries with two neutron stars (NS) and discuss the prospects for the detection of NS-NS inspiral events by ground-based gravitational-wave observatories, such as LIGO. We derive the Galactic…

Astrophysics · Physics 2009-10-31 V. Kalogera , R. Narayan , D. N. Spergel , J. H. Taylor

There are now about fifty known radio pulsars in binary systems, including at least five in double neutron star binaries. In some cases, the stellar masses can be directly determined from measurements of relativistic orbital effects. In…

Astrophysics · Physics 2009-10-30 S. E. Thorsett , Deepto Chakrabarty

Binary neutron stars (BNSs) are the primary source of gravitational waves for the Laser Interferometer Gravitational-Wave Observatory (LIGO) and its international partners Virgo and KAGRA. Current BNS searches target field binaries whose…

General Relativity and Quantum Cosmology · Physics 2013-06-11 E. A. Huerta , Duncan A. Brown

Recent optical astrometric and spectroscopic surveys have identified numerous neutron star (NS) candidates in non-accreting detached binary systems, but their compact-object nature remains unconfirmed. In this work, we present targeted…

High Energy Astrophysical Phenomena · Physics 2025-11-26 Shi-Jie Gao , Xiang-Dong Li , Song Wang , Kareem El-Badry , De-Jiang Zhou , Yi-Xuan Shao , Zhen Yan , Pei Wang , Ping Zhou , Jin-Lin Han

The cosmic variance on the star formation history may lead to bias to the merger rate density estimation of binary neutron star (BNS) mergers by the compact binary population synthesis. In this paper, we take the advantage of the large…

High Energy Astrophysical Phenomena · Physics 2024-09-02 Zhiwei Chen , Youjun Lu , Jie Wang , Zhen Jiang , Qingbo Chu , Xianghao Ma