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The late stage of an inspiraling neutron star binary gives rise to strong gravitational wave emission due to its highly dynamic, strong gravity. Moreover, interactions between the stellar magnetospheres can produce considerable…

General Relativity and Quantum Cosmology · Physics 2013-08-27 Carlos Palenzuela , Luis Lehner , Marcelo Ponce , Steven L. Liebling , Matthew Anderson , David Neilsen , Patrick Motl

We study the gravitational-wave peak luminosity and radiated energy of quasicircular neutron star mergers using a large sample of numerical relativity simulations with different binary parameters and input physics. The peak luminosity for…

General Relativity and Quantum Cosmology · Physics 2018-03-21 Francesco Zappa , Sebastiano Bernuzzi , David Radice , Albino Perego , Tim Dietrich

The coalescence of a neutron-star binary is likely to result in the formation of a neutron-star merger remnant for a large range of binary mass configurations. The massive merger remnant shows strong oscillations, which are excited by the…

High Energy Astrophysical Phenomena · Physics 2016-02-03 A. Bauswein , J. Clark , N. Stergioulas , H. -T. Janka

Observations of short-duration gamma-ray bursts and their afterglows show that a good fraction (perhaps $\gtrsim50\%$) of binary neutron star mergers lead to strongly magnetized, rapidly rotating pulsars (including millisecond magnetars),…

High Energy Astrophysical Phenomena · Physics 2019-02-22 Z. G. Dai

Neutron star binaries offer a rich phenomenology in terms of gravitational waves and merger remnants. However, most general relativistic studies have been performed for nearly circular binaries, with the exception of head-on collisions. We…

General Relativity and Quantum Cosmology · Physics 2013-01-10 Roman Gold , Sebastiano Bernuzzi , Marcus Thierfelder , Bernd Bruegmann , Frans Pretorius

The discovery of the first pulsar in a binary star system, the Hulse--Taylor pulsar, 50 years ago opened up an entirely new field of experimental gravity. For the first time it was possible to investigate strong-field and radiative aspects…

General Relativity and Quantum Cosmology · Physics 2024-07-24 Paulo C. C. Freire , Norbert Wex

The detection, in 1998, of the first Accreting Millisecond Pulsar, started an exciting season of continuing discoveries in the fashinating field of compact binary systems harbouring a neutron star. Indeed, in these last three lustres,…

High Energy Astrophysical Phenomena · Physics 2013-10-07 Luciano Burderi , Tiziana Di Salvo

In this article, I introduce ideas and techniques to extract information about the equation of state of matter at very high densities from gravitational waves emitted before, during and after the merger of binary neutron stars. I also…

High Energy Astrophysical Phenomena · Physics 2019-09-30 Luca Baiotti

We expand on our study of the gravitational and electromagnetic emissions from the late stage of an inspiraling neutron star binary as presented in Ref. \cite{Palenzuela:2013hu}. Interactions between the stellar magnetospheres, driven by…

General Relativity and Quantum Cosmology · Physics 2013-09-13 Carlos Palenzuela , Luis Lehner , Steven L. Liebling , Marcelo Ponce , Matthew Anderson , David Neilsen , Patrick Motl

Gravitational waves are expected to be radiated by supermassive black hole binaries formed during galaxy mergers. A stochastic superposition of gravitational waves from all such binary systems will modulate the arrival times of pulses from…

Massive (hypermassive and supramassive) neutron stars are likely to be often formed after the merger of binary neutron stars. We explore the evolution process of the remnant massive neutron stars and gravitational waves emitted by them,…

High Energy Astrophysical Phenomena · Physics 2015-06-16 Kenta Hotokezaka , Kenta Kiuchi , Koutarou Kyutoku , Takayuki Muranushi , Yu-ichiro Sekiguchi , Masaru Shibata , Keisuke Taniguchi

Merging neutron stars and neutron star-black holes binaries are powerful sources of gravitational waves. They have also been suggested as possible sources of cosmic gamma-ray bursts and are discussed as sites for the formation of r-process…

Astrophysics · Physics 2007-05-23 H. -Th. Janka , M. Ruffert

We investigate pre-merger coherent radio emission from neutron star mergers arising due to the magnetospheric interaction between compact objects. We consider two plausible radiation mechanisms, and show that if one neutron star has a…

High Energy Astrophysical Phenomena · Physics 2022-12-21 A. J. Cooper , O. Gupta , Z. Wadiasingh , R. A. M. J. Wijers , O. M. Boersma , I. Andreoni , A. Rowlinson , K. Gourdji

The discovery of two neutron star-black hole coalescences by LIGO and Virgo brings the total number of likely neutron stars observed in gravitational waves to six. We perform the first inference of the mass distribution of this…

High Energy Astrophysical Phenomena · Physics 2021-11-17 Philippe Landry , Jocelyn S. Read

The detection of gravitational waves from neutron star merger events has opened up a new field of multi-messenger astronomy linking gravitational waves events to short-gamma ray bursts and kilonova afterglows. A further - yet to be…

High Energy Astrophysical Phenomena · Physics 2020-04-15 Elias R. Most , Alexander A. Philippov

Recent observations have shown that some compact stellar binaries radiate the highest energy light in the universe. The challenge has been to determine the nature of the compact object and whether the very high energy gamma-rays are…

Astrophysics · Physics 2008-11-26 I. F. Mirabel

The most energetic neutron stars, powered by their rotation, are capable of producing pulsed radiation from the radio up to gamma rays with nearly TeV energies. These pulsars are part of the universe of energetic and powerful particle…

High Energy Astrophysical Phenomena · Physics 2015-09-30 Isabelle A. Grenier , Alice K. Harding

The first inspiral of two neutron stars observed in gravitational waves was remarkably close, allowing the kind of simultaneous gravitational wave and electromagnetic observation that had not been expected for several years. Their merger,…

High Energy Astrophysical Phenomena · Physics 2022-01-11 John L. Friedman , Nikolaos Stergioulas

The gravitational wave signals of black hole-neutron star (BHNS) binary systems have now been detected, and future detections might be accompanied by electromagnetic counterparts. BHNS mergers involve much of the same physics as binary…

High Energy Astrophysical Phenomena · Physics 2024-04-24 Matthew D. Duez

A number of works have shown that important information on the equation of state of matter at nuclear density can be extracted from the gravitational waves emitted by merging neutron-star binaries. We present a comprehensive analysis of the…

General Relativity and Quantum Cosmology · Physics 2016-06-29 Luciano Rezzolla , Kentaro Takami
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