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Short gamma-ray bursts are believed to be produced by both binary neutron star (BNS) and neutron star-black hole (NSBH) mergers. We use current estimates for the BNS and NSBH merger rates to calculate the fraction of observable short…

High Energy Astrophysical Phenomena · Physics 2022-04-27 Nikhil Sarin , Paul D. Lasky , Francisco H. Vivanco , Simon P. Stevenson , Debatri Chattopadhyay , Rory Smith , Eric Thrane

Gravitational waves from neutron star-black hole (NSBH) mergers that undergo tidal disruption provide a potential avenue to study the equation of state of neutron stars and hence the behaviour of matter at its most extreme densities. We…

General Relativity and Quantum Cosmology · Physics 2023-05-31 Teagan A. Clarke , Lani Chastain , Paul D. Lasky , Eric Thrane

Neutron star-black hole (NSBH) mergers detected in gravitational waves have the potential to shed light on supernova physics, the dense matter equation of state, and the astrophysical processes that power their potential electromagnetic…

High Energy Astrophysical Phenomena · Physics 2023-06-22 Sylvia Biscoveanu , Philippe Landry , Salvatore Vitale

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

Compact-object binary mergers consisting of one neutron star and one black hole (NSBHs) have long been considered promising progenitors for gamma-ray bursts, whose central engine remains poorly understood. Using gravitational-wave…

High Energy Astrophysical Phenomena · Physics 2023-09-06 Sylvia Biscoveanu , Eric Burns , Philippe Landry , Salvatore Vitale

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

Inspiraling and merging binary neutron stars are not only important source of gravitational waves, but also promising candidates for coincident electromagnetic counterparts. These systems are thought to be progenitors of short gamma-ray…

High Energy Astrophysical Phenomena · Physics 2017-11-03 Milton Ruiz , Stuart L. Shapiro

Black hole-neutron star (BHNS) mergers are one of the most promising targets for multimessenger astronomy. Using general relativistic magnetohydrodynamic simulations of BHNS undergoing merger we showed that a magnetically--driven jet can be…

High Energy Astrophysical Phenomena · Physics 2018-12-27 Milton Ruiz , Stuart L. Shapiro , Antonios Tsokaros

The detection of GW170817 in gravitational waves and gamma rays revealed that short gamma-ray bursts are associated with the merger of neutron-stars. Gamma rays are thought to result from the formation of collimated jets, but the details of…

High Energy Astrophysical Phenomena · Physics 2020-06-10 Amanda Farah , Reed Essick , Zoheyr Doctor , Maya Fishbach , Daniel E. Holz

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

We present the first special relativistic, axisymmetric hydrodynamic simulations of black hole-torus systems (approximating general relativistic gravity) as remnants of binary-neutron star (NS-NS) and neutron star-black hole (NS-BH)…

High Energy Astrophysical Phenomena · Physics 2016-01-20 Oliver Just , Martin Obergaulinger , H. -Thomas Janka , Andreas Bauswein , Nicole Schwarz

GW170817 was the first ever joint detection of gravitational waves (GW) from a binary neutron star (BNS) merger with the detections of short $\gamma$-ray burst (SGRB) counterparts. Analysis of the multi-band afterglow observations of over…

High Energy Astrophysical Phenomena · Physics 2020-01-31 M. Saleem

A structured gamma-ray burst jet could explain the dimness of the prompt emission observed from GRB$\,170817$A but the exact form of this structure is still ambiguous. However, with the promise of future joint gravitational wave and…

High Energy Astrophysical Phenomena · Physics 2020-03-18 Fergus Hayes , Ik Siong Heng , John Veitch , Daniel Williams

Black-hole neutron-star coalescing binaries have been invoked as one of the most suitable scenario to explain the emission of short gamma-ray bursts. Indeed, if the black-hole which forms after the merger, is surrounded by a massive disk,…

General Relativity and Quantum Cosmology · Physics 2015-06-19 Andrea Maselli , Valeria Ferrari

The observations of GW170817/GRB170817A have confirmed that the coalescence of a neutron-star binary is the progenitor of a short gamma-ray burst. In the standard picture of a short gamma-ray burst, a collimated highly relativistic outflow…

High Energy Astrophysical Phenomena · Physics 2020-06-03 Antonios Nathanail , Ramandeep Gill , Oliver Porth , Christian M. Fromm , Luciano Rezzolla

The most popular model for short gamma-ray bursts (sGRBs) involves the coalescence of binary neutron stars. Because the progenitor is actually hidden from view, we must consider under which circumstances such merging systems are capable of…

Unlike mergers of two compact objects containing a neutron star (NS), binary black hole (BBH) mergers are not accompanied by the production of tidally disrupted material, and hence lack the most direct source of accretion to power a jet and…

High Energy Astrophysical Phenomena · Physics 2019-04-24 Rosalba Perna , Davide Lazzati , Will Farr

We present a novel fully Bayesian analysis to constrain short gamma-ray burst jet structures associated with cocoon, wide-angle and simple top-hat jet models, as well as the binary neutron star merger rate. These constraints are made given…

High Energy Astrophysical Phenomena · Physics 2023-05-12 Fergus Hayes , Ik Siong Heng , Gavin Lamb , En-Tzu Lin , John Veitch , Michael J. Williams

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

Black hole-neutron star (BHNS) binaries are expected to be among the leading sources of gravitational waves observable by ground-based detectors, and may be the progenitors of short-hard gamma ray bursts (SGRBs) as well. Here, we discuss…

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