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Related papers: Impact of black hole spin on low-mass black hole-n…

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The recent observation of the GW230529 event indicates that black hole-neutron star binaries can contain low-mass black holes. Since lower mass systems are more favourable for tidal disruption, such events are promising candidates for…

High Energy Astrophysical Phenomena · Physics 2024-07-26 Rahime Matur , Ian Hawke , Nils Andersson

Black hole-neutron star mergers resulting in the disruption of the neutron star and the formation of an accretion disk and/or the ejection of unbound material are prime candidates for the joint detection of gravitational-wave and…

We investigate the effect of spin on equal and unequal mass binary neutron star mergers using finite-temperature, composition-dependent Steiner-Fischer-Hempel equation of state with parameter set ``o'' (SFHo), via 3+1 general relativistic…

High Energy Astrophysical Phenomena · Physics 2025-12-17 Beyhan Karakas , Rahime Matur , Maximilian Ruffert

Black hole-neutron star (BHNS) mergers are thought to be sources of gravitational waves (GWs) with coincident electromagnetic (EM) counterparts. To further probe whether these systems are viable progenitors of short gamma-ray bursts (sGRBs)…

High Energy Astrophysical Phenomena · Physics 2021-01-06 Milton Ruiz , Vasileios Paschalidis , Antonios Tsokaros , Stuart L. Shapiro

There is a high level of interest in black hole-neutron star binaries, not only because their mergers may be detected by gravitational wave observatories in the coming years, but also because of the possibility that they could explain a…

High Energy Astrophysical Phenomena · Physics 2012-06-06 William E. East , Frans Pretorius , Branson C. Stephens

Black hole-neutron star (BHNS) binary mergers are candidate engines for generating both short-hard gamma-ray bursts (SGRBs) and detectable gravitational waves. Using our most recent conformal thin-sandwich BHNS initial data and our fully…

Astrophysics · Physics 2009-09-02 Zachariah B. Etienne , Yuk Tung Liu , Stuart L. Shapiro , Thomas W. Baumgarte

The detection of GW230529_181500 suggested the existence of more symmetric black hole-neutron star mergers where the black hole mass can be as low as 2.6 times that of the neutron star. Black hole-neutron star binaries with even more…

High Energy Astrophysical Phenomena · Physics 2026-01-28 Ivan Markin , Mattia Bulla , Tim Dietrich

During the fourth observing run, the LIGO-Virgo-KAGRA Collaboration reported the detection of a coalescing compact binary (GW230529$_{-}$181500) with component masses estimated at $2.5-4.5\, M_\odot$ and $1.2-2.0\, M_\odot$ with 90\%…

High Energy Astrophysical Phenomena · Physics 2024-11-27 Ying Qin , Zhen-Han-Tao Wang , Georges Meynet , Rui-Chong Hu , Chengjie Fu , Xin-Wen Shu , Zi-Yuan Wang , Shuang-Xi Yi , Qing-Wen Tang , Han-Feng Song , En-Wei Liang

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

A black-hole neutron-star binary merger can lead to an electromagnetic counterpart called a kilonova if the neutron star is disrupted prior to merger. The observability of a kilonova depends on the amount of neutron star ejecta, which is…

High Energy Astrophysical Phenomena · Physics 2023-02-03 Nathan Steinle , Benjamin P. Gompertz , Matt Nicholl

We study dynamical capture binary black hole-neutron star (BH-NS) mergers focusing on the effects of the neutron star spin. These events may arise in dense stellar regions, such as globular clusters, where the majority of neutron stars are…

High Energy Astrophysical Phenomena · Physics 2015-06-29 William E. East , Vasileios Paschalidis , Frans Pretorius

General relativistic simulations of black hole-neutron star mergers have currently been limited to low-mass black holes (less than 7 solar mass), even though population synthesis models indicate that a majority of mergers might involve more…

General Relativity and Quantum Cosmology · Physics 2012-03-13 Francois Foucart , Matthew D. Duez , Lawrence E. Kidder , Mark A. Scheel , Bela Szilagyi , Saul A. Teukolsky

The accretion disk that forms after a neutron star merger is a source of neutron-rich ejecta. The ejected material contributes to a radioactively-powered electromagnetic transient, with properties that depend sensitively on the composition…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Rodrigo Fernández , Daniel Kasen , Brian D. Metzger , Eliot Quataert

Each of the potential signals from a black hole-neutron star merger should contain an imprint of the neutron star equation of state: gravitational waves via its effect on tidal disruption, the kilonova via its effect on the ejecta, and the…

We perform general-relativistic hydrodynamical simulations of dynamical capture binary neutron star mergers, emphasizing the role played by the neutron star spin. Dynamical capture mergers may take place in globular clusters, as well as…

High Energy Astrophysical Phenomena · Physics 2016-01-14 William E. East , Vasileios Paschalidis , Frans Pretorius , Stuart L. Shapiro

Black hole-neutron star (BHNS) binaries are important sources of gravitational waves for second-generation interferometers, and BHNS mergers are also a proposed engine for short, hard gamma-ray bursts. The behavior of both the spacetime…

General Relativity and Quantum Cosmology · Physics 2013-07-12 Geoffrey Lovelace , Matthew D. Duez , Francois Foucart , Lawrence E. Kidder , Harald P. Pfeiffer , Mark A. Scheel , Bela Szilagyi

Over the last few years, there has been an increasing interest in sub-solar mass black holes due to their potential to provide valuable information about cosmology or the black hole population. Motivated by this, we study observable…

General Relativity and Quantum Cosmology · Physics 2025-06-10 Ivan Markin , Anna Neuweiler , Adrian Abac , Swami Vivekanandji Chaurasia , Maximiliano Ujevic , Mattia Bulla , Tim Dietrich

Hydrodynamic simulations of the merger of stellar mass black hole - neutron star binaries (BH/NS) are compared with mergers of binary neutron stars (NS/NS). The simulations are Newtonian, but take into account the emission and backreaction…

Astrophysics · Physics 2009-10-31 H. -Th. Janka , Th. Eberl , M. Ruffert , C. L. Fryer

Simulations of neutron star-black hole (NSBH) binaries generally consider black holes with masses in the range $(5-10)M_\odot$, where we expect to find most stellar mass black holes. The existence of lower mass black holes, however, cannot…

High Energy Astrophysical Phenomena · Physics 2019-06-05 F. Foucart , M. D. Duez , L. E. Kidder , S. Nissanke , H. P. Pfeiffer , M. A. Scheel

Black hole - neutron star (BHNS) mergers are a promising target of current gravitational-wave (GW) and electromagnetic (EM) searches, being the putative origin of ultra-relativistic jets, gamma-ray emission, and r-process nucleosynthesis.…

General Relativity and Quantum Cosmology · Physics 2024-09-12 Konrad Topolski , Samuel Tootle , Luciano Rezzolla
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