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We study the merger of binary neutron stars with different mass ratios adopting three different realistic, microphysical nuclear equations of state, as well as incorporating neutrino cooling effects. In particular, we concentrate on the…

General Relativity and Quantum Cosmology · Physics 2016-09-21 Luis Lehner , Steven L. Liebling , Carlos Palenzuela , O. L. Caballero , Evan O'Connor , Matthew Anderson , David Neilsen

LISA will detect $\sim \! 10^4$ Galactic binaries, the majority being double white dwarfs. However, approximately $\sim \! 1 \textrm{--} 5 \%$ of these systems will contain neutron stars which, if they can be correctly identified, will…

High Energy Astrophysical Phenomena · Physics 2024-06-11 Christopher J. Moore , Eliot Finch , Antoine Klein , Valeriya Korol , Nhat Pham , Daniel Robins

We discuss a possible generation of radio bursts preceding final stages of binary neutron star mergings which can be accompanied by short gamma-ray bursts. Detection of such bursts appear to be advantageous in the low-frequency radio band…

High Energy Astrophysical Phenomena · Physics 2010-04-29 M. S. Pshirkov , K. A. Postnov

The merger of binary neutron stars (NSs) is among the most promising gravitational wave (GW) sources. Next-generation GW detectors are expected to detect signals from the NS merger within 200 Mpc. Detection of electromagnetic wave (EM)…

High Energy Astrophysical Phenomena · Physics 2015-06-16 Masaomi Tanaka , Kenta Hotokezaka

We suggest that the major fraction of binary mergers, which might provide gravitational wave signal detectable by LIGO/Virgo, emerged from the hidden mirror sector. Mirror particles do not interact with an ordinary observer except…

High Energy Astrophysical Phenomena · Physics 2020-04-03 Revaz Beradze , Merab Gogberashvili , Alexander S. Sakharov

The next generation of ground-based interferometric gravitational wave detectors will observe mergers of black holes and neutron stars throughout cosmic time. A large number of the binary neutron star merger events will be observed with…

High Energy Astrophysical Phenomena · Physics 2024-02-08 Ananya Bandopadhyay , Keisi Kacanja , Rahul Somasundaram , Alexander H. Nitz , Duncan A. Brown

In this review we show that the space experiment with gamma-ray detector with sensitivity 2 orders of magnitude higher than existing ones will make it possible to discover up to a thousand neutron star mergers, even at those moments when…

High Energy Astrophysical Phenomena · Physics 2024-08-27 Vladimir Lipunov , Sergey Svertilov , Vladislav Topolev

Binary (and trinary) radio pulsars are natural laboratories in space for understanding gravity in the strong field regime, with many unique and precise tests carried out so far, including the most precise tests of the strong equivalence…

Radio emission from stars can be used, e.g., to study ionized winds or stellar flares. The radio emission is faint and studies have been limited to few objects. The Square Kilometer Array (SKA) will bring a survey ability to the topic of…

Solar and Stellar Astrophysics · Physics 2021-04-27 Bin Yu , Albert Zijlstra , Biwei Jiang

We present results from three-dimensional general relativistic simulations of binary neutron star coalescences and mergers using public codes. We considered equal mass models where the baryon mass of the two Neutron Stars (NS) is…

General Relativity and Quantum Cosmology · Physics 2016-08-09 Francesco Maione , Roberto De Pietri , Alessandra Feo , Frank Löffler

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

The detection of gravitational waves emitted during a neutron star - black hole merger and the associated electromagnetic counterpart will provide a wealth of information about stellar evolution nuclear matter, and General Relativity. While…

Astrophysics of Galaxies · Physics 2020-06-16 Manuel Arca Sedda

Gravitational waves have been detected from the inspiral of a binary neutron-star, GW170817, which allowed constraints to be placed on the neutron star equation of state. The equation of state can be further constrained if gravitational…

General Relativity and Quantum Cosmology · Physics 2019-08-14 Paul J. Easter , Paul D. Lasky , Andrew R. Casey , Luciano Rezzolla , Kentaro Takami

For massive black hole binaries produced in galactic mergers, we examine the possibility of inspiral induced by interaction with field stars. We model the evolution of such binaries for a range of galaxy core and binary parameters, using…

Astrophysics · Physics 2010-11-01 Mohan Rajagopal , Roger W. Romani

As we showed in previous work, the dynamics and gravitational emission of binary neutron star systems in certain scalar-tensor theories can differ significantly from that expected from General Relativity in the coalescing stage. In this…

General Relativity and Quantum Cosmology · Physics 2015-04-22 Marcelo Ponce , Carlos Palenzuela , Enrico Barausse , Luis Lehner

We constrain the uncertainty in waiting times for detecting the first double-neutron-star (DNS) mergers by gravitational wave observatories. By accounting for the Poisson fluctuations in the rate density of DNS mergers and galaxy space…

Astrophysics · Physics 2011-05-09 D. M. Coward

The Einstein Telescope is a conceived third generation gravitational-wave detector that is envisioned to be an order of magnitude more sensitive than advanced LIGO, Virgo and Kagra, which would be able to detect gravitational-wave signals…

General Relativity and Quantum Cosmology · Physics 2016-01-20 Duncan Meacher , Kipp Cannon , Chad Hanna , Tania Regimbau , B. S. Sathyaprakash

Neutron star binaries, such as the one observed in the famous binary pulsar PSR 1916+13, end their life in a catastrophic merge event (denoted here NS$^2$M). The merger releases $\approx 5 \cdot 10^{53}$ergs, mostly as neutrinos and…

Astrophysics · Physics 2009-09-25 Tsvi Piran

The Square Kilometre Array (SKA), when it becomes functional, is expected to enrich neutron star (NS) catalogues by at least an order of magnitude over their current state. This includes the discovery of new NS objects leading to better…

Instrumentation and Methods for Astrophysics · Physics 2017-01-18 Mihir Arjunwadkar , Akanksha Kashikar , Manjari Bagchi

A binary neutron star (BNS) merger event has recently been observed in gravitational waves (GWs). As in the case of binary black holes, GWs generated by BNS consist of inspiral, merger, and post-merger components. Detecting the latter is…

General Relativity and Quantum Cosmology · Physics 2018-02-07 Huan Yang , Vasileios Paschalidis , Kent Yagi , Luis Lehner , Frans Pretorius , Nicolas Yunes