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The first neutron star binary merger detected in gravitational waves, GW170817 and the subsequent detection of its emission across the electromagnetic spectrum showed that these systems are viable progenitors of short $\gamma$-ray bursts…

High Energy Astrophysical Phenomena · Physics 2021-03-03 Ariadna Murguia-Berthier , Enrico Ramirez-Ruiz , Fabio De Colle , Agnieszka Janiuk , Stephan Rosswog , William H. Lee

Short gamma-ray bursts (SGRBs) are among the most luminous explosions in the Universe and their origin still remains uncertain. Observational evidence favors the association with binary neutron star or neutron star-black hole (NS-BH) binary…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Riccardo Ciolfi , Daniel M. Siegel

The merger of compact binary stars produces short gamma-ray bursts (sGRBs), involving channels such as neutron star - neutron star (BNS) and neutron star - black hole (NS-BH). The association between sGRB 170817A and gravitational wave GW…

High Energy Astrophysical Phenomena · Physics 2025-01-14 Qin-Mei Li , Qi-Bin Sun

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

Compact binary mergers, with neutron stars or neutron star and black-hole components, are thought to produce various electromagnetic counterparts: short gamma-ray bursts (GRBs) from ultra-relativistic jets followed by broadband afterglow;…

High Energy Astrophysical Phenomena · Physics 2017-06-28 Gavin P Lamb , Shiho Kobayashi

The first gravitational-wave event from the merger of a binary neutron star system (GW170817) was detected recently. The associated short gamma-ray burst (GRB 170817A) has a low isotropic luminosity ($\sim 10^{47}$ erg s$ ^{-1}$) and a peak…

High Energy Astrophysical Phenomena · Physics 2018-06-19 Yan-Zhi Meng , Jin-Jun Geng , Bin-Bin Zhang , Jun-Jie Wei , Di Xiao , Liang-Duan Liu , He Gao , Xue-Feng Wu , En-Wei Liang , Yong-Feng Huang , Zi-Gao Dai , Bing Zhang

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

Context. The concomitant observation of gravitational wave and electromagnetic signals from a binary neutron star (BNS) merger in 2017 confirmed that these events can produce relativistic jets responsible for short Gamma-Ray Bursts (sGRBs).…

High Energy Astrophysical Phenomena · Physics 2025-02-19 Emma Dreas , Andrea Pavan , Riccardo Ciolfi , Annalisa Celotti

The joint detection of the gravitational wave (GW) event GW170817 and the short-duration gamma-ray burst (SGRB) event GRB 170817A, marked the beginning of GW multi-messenger astronomy and confirmed that binary neutron star mergers are…

High Energy Astrophysical Phenomena · Physics 2024-05-31 Luyanda Mazwi , Soebur Razzaque , Lutendo Nyadzani

Short gamma-ray bursts (GRBs) are the aftermath of compact binary mergers involving neutron stars. If the merger remnant is a millisecond magnetar instead of a black hole, a significant proportion of the rotational energy deposited to the…

High Energy Astrophysical Phenomena · Physics 2024-01-23 Ankur Ghosh , C. S. Vaishnava , L. Resmi , Kuntal Misra , K. G. Arun , Amitesh Omar , N. K. Chakradhari

Close binary systems consisting of two neutron stars (BNS) emit gravitational waves, that allow them to merge on timescales shorter than Hubble time. It is widely believed, that NS-NS mergers in such systems power short gamma-ray bursts…

We perform high-resolution three-dimensional general-relativistic magnetohydrodynamic simulations with neutrino transport of binary neutron star (BNS) mergers resulting in a long-lived remnant neutron star, with properties typical of…

High Energy Astrophysical Phenomena · Physics 2023-12-11 Luciano Combi , Daniel M. Siegel

The discovery of GW170817 and GRB 170817A in tandem with AT 2017gfo cemented the connection between neutron star mergers, short gamma-ray bursts (GRBs), and kilonovae. To investigate short GRB observations in the context of diverse kilonova…

After decades of observations the physical mechanisms that generate short gamma-ray bursts (SGRBs) still remain unclear. Observational evidence provides support to the idea that SGRBs originate from the merger of compact binaries,…

High Energy Astrophysical Phenomena · Physics 2015-05-07 Riccardo Ciolfi , Daniel M. Siegel

The recent multimessenger observation of the short gamma-ray burst (SGRB) GRB 170817A together with the gravitational wave (GW) event GW170817 provides evidence for the long-standing hypothesis associating SGRBs with binary neutron star…

High Energy Astrophysical Phenomena · Physics 2019-07-24 Riccardo Ciolfi , Wolfgang Kastaun , Jay Vijay Kalinani , Bruno Giacomazzo

It seems that the wealth of information revealed by the multi-messenger observations of the binary neutron star (NS) merger event, GW170817/GRB 170817A/kilonova AT2017gfo, places irreconcilable constraints to models of the prompt emission…

High Energy Astrophysical Phenomena · Physics 2023-08-16 Shuang Du , Tingting Lin , Shujin Hou , Renxin Xu

The binary neutron star merger event GW170817 was detected through both electromagnetic radiation and gravitational waves. Its afterglow emission may have been produced by either a narrow relativistic jet or an isotropic outflow. High…

An energetic $\rm \gamma$-ray burst (GRB), GRB 211211A, was observed on 2021 December 11 by the Neil Gehrels Swift Observatory. Despite its long duration, typically associated with bursts produced by the collapse of massive stars, the…

A binary neutron star (BNS) merger has been widely argued to be one of the progenitors of a short gamma-ray burst (SGRB). This central engine can be verified if its gravitational-wave (GW) event is detected simultaneously. Once confirmed,…

High Energy Astrophysical Phenomena · Physics 2017-10-03 Di Xiao , Liang-Duan Liu , Zi-Gao Dai , Xue-Feng Wu

The short Gamma Ray Bursts (GRBs) are the aftermath of the merger of binary compact objects (neutron star -- neutron star or neutron star -- black hole systems). With the simultaneous detection of Gravitational Wave (GW) signal from GW…

High Energy Astrophysical Phenomena · Physics 2024-01-23 Ankur Ghosh , Kuntal Misra , C. S. Vaishnava , L. Resmi , K. G. Arun , Amitesh Omar , Dimple , N. K. Chakradhari