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We perform radiative transfer simulations for kilonova in various situations, including the cases of prompt collapse to a black hole from neutron-star mergers, high-velocity ejecta possibly accelerated by magnetars, and a black hole-neutron…

高能天体物理现象 · 物理学 2020-02-12 Kyohei Kawaguchi , Masaru Shibata , Masaomi Tanaka

We combine electromagnetic (EM) and gravitational wave (GW) information on the binary neutron star (NS) merger GW170817 in order to constrain the radii $R_{\rm ns}$ and maximum mass $M_{\rm max}$ of NSs. GW170817 was followed by a range of…

高能天体物理现象 · 物理学 2017-12-06 Ben Margalit , Brian Metzger

We explore the multi-messenger signatures of encounters between two neutron stars and between a neutron star and a stellar-mass black hole. We focus on the differences between gravitational wave driven binary mergers and dynamical…

高能天体物理现象 · 物理学 2015-06-04 S. Rosswog , T. Piran , E. Nakar

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…

高能天体物理现象 · 物理学 2022-12-21 A. J. Cooper , O. Gupta , Z. Wadiasingh , R. A. M. J. Wijers , O. M. Boersma , I. Andreoni , A. Rowlinson , K. Gourdji

Ejected material from neutron star mergers give rise to electromagnetic emission powered by radioactive decays of r-process nuclei, which is so called kilonova or macronova. While properties of the emission are largely affected by opacities…

There is irresistible observational evidence that binary systems of compact objects with at least one neutron star are progenitors of short gamma-ray bursts, as well as a production site for r-process elements, at least when some matter is…

高能天体物理现象 · 物理学 2020-09-15 C. J. Krüger , F. Foucart

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…

高能天体物理现象 · 物理学 2026-01-28 Ivan Markin , Mattia Bulla , Tim Dietrich

The identification of the first confirmed neutron star - black hole (NS-BH) binary mergers by the LIGO, Virgo and KAGRA collaboration provides the opportunity to investigate the properties of the early sample of confirmed and candidate…

高能天体物理现象 · 物理学 2022-01-19 B. P. Gompertz , M. Nicholl , P. Schmidt , G. Pratten , A. Vecchio

The first direct detection of the gravitational wave (GW) event GW170817 and its electromagnetic (EM) counterpart open a new window for studying of multi-messenger astronomy. However, how to identify the remnant of binary neutron star (NS)…

高能天体物理现象 · 物理学 2025-08-22 Suo-Ning Wang , Hou-Jun Lü , Xiao-Xuan Liu , Jared Rice , Jia Ren , En-Wei Liang

The merger of two neutron stars is predicted to give rise to three major detectable phenomena: a short burst of gamma-rays, a gravitational wave signal, and a transient optical/near-infrared source powered by the synthesis of large amounts…

We perform a comparative analysis of nucleosynthesis yields from binary neutron star (BNS) mergers, black hole-neutron star (BHNS) mergers, and core-collapse supernovae (CCSNe) with the goal of determining which are the most dominant…

高能天体物理现象 · 物理学 2023-08-30 Nick Ekanger , Mukul Bhattacharya , Shunsaku Horiuchi

Compact binary mergers, detected in gravitational waves since 2015, are candidate sources for astrophysical neutrinos in the GeV regime from proton-proton and proton-neutron collisions. This contribution presents the results of the search…

高能天体物理现象 · 物理学 2025-07-21 Karlijn Kruiswijk , Mathieu Lamoureux , Matthias Vereecken , Gwenhaël de Wasseige

Neutron-star mergers are interesting for several reasons: they are proposed as the progenitors of short gamma-ray bursts, they have been speculated to be a site for the synthesis of heavy elements, and they emit gravitational waves possibly…

核理论 · 物理学 2016-08-03 O. L. Caballero

Fast radio bursts (FRBs) are usually suggested to be associated with mergers of compact binaries consisting of white dwarfs (WDs), neutron stars (NSs), or black holes (BHs). We test these models by fitting the observational distributions in…

高能天体物理现象 · 物理学 2018-05-23 Xiao-Feng Cao , Yun-Wei Yu , Xia Zhou

Binary neutron-star mergers have long been associated with short-duration gamma-ray bursts (GRBs). This connection was confirmed with the first coincident detection of gravitational waves together with electromagnetic radiation from…

高能天体物理现象 · 物理学 2019-10-11 Antonios Nathanail , Oliver Porth , Luciano Rezzolla

Binary neutron star (BNS) mergers are the leading model to explain the phenomenology of short gamma-ray bursts (SGRBs), which are among the most luminous explosions in the universe. Recent observations of long-lasting X-ray afterglows of…

高能天体物理现象 · 物理学 2016-03-16 Daniel M. Siegel , Riccardo Ciolfi

GW170817 showed that neutron star mergers not only emit gravitational waves but also can release electromagnetic signatures in multiple wavelengths. Within the first half of the third observing run of the Advanced LIGO and Virgo detectors,…

GW190426_152155 was recently reported as one of the 39 candidate gravitational wave (GW) events in \citet{2020arXiv201014527A}, which has an unusual source-frame chirp mass $\sim 2.4M_{\odot}$ and may be the first GW signal from a neutron…

高能天体物理现象 · 物理学 2020-12-10 Yin-Jie Li , Ming-Zhe Han , Shao-Peng Tang , Yuan-Zhu Wang , Yi-Ming Hu , Qiang Yuan , Yi-Zhong Fan , Da-Ming Wei

The coalescence of binary neutron stars (NSs) may in some cases produce a stable massive NS remnant rather than a black hole. Due to the substantial angular momentum from the binary, such a remnant is born rapidly rotating and likely…

高能天体物理现象 · 物理学 2015-06-17 Brian D. Metzger , Anthony L. Piro

The contemporaneous detection of gravitational waves and gamma rays from the GW170817/GRB 170817A, followed by kilonova emission a day after, confirmed compact binary neutron-star mergers as progenitors of short-duration gamma-ray bursts…