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The historic observations of the neutron star merger GW170817 advanced our understanding of r-process nucleosynthesis and the equation of state (EOS) of neutron rich matter. Simple neutrino physics suggests that supernovae are not the site…

高能天体物理现象 · 物理学 2019-11-04 C. J. Horowitz

We demonstrate Bayesian analyses of the complete gravitational-wave spectrum of binary neutron star mergers events with the next-generation detector Einstein Telescope. Our mock analyses are performed for 20 different signals using the…

广义相对论与量子宇宙学 · 物理学 2026-02-12 Giulia Huez , Sebastiano Bernuzzi , Matteo Breschi , Rossella Gamba

The observations of optical and near-infrared counterparts of binary neutron star mergers not only enrich our knowledge about the abundance of heavy elements in the Universe, or help reveal the remnant object just after the merger as…

高能天体物理现象 · 物理学 2023-02-09 Zhenyu Zhu , Ang Li , Tong Liu

The observed spectra and light curves of the kilonova produced by the GW170817 binary neutron star merger provide complementary insights, but modeling both the spectral- and time-domain has proven challenging. Here, we model the…

高能天体物理现象 · 物理学 2025-11-14 Nicholas Vieira , John J. Ruan , Daryl Haggard , Maria R. Drout , Rodrigo Fernández

Neutron star mergers have been proposed as the main source of heavy $r$-process nucleosynthesis in the Universe. However, the mergers' significant expected delay after binary formation is in tension with observed very early $r$-process…

高能天体物理现象 · 物理学 2023-02-22 I. Bartos , S. Rosswog , V. Gayathri , M. C. Miller , D. Veske , S. Marka

The observations of GW170817/AT2017gfo have provided us with evidence that binary neutron star mergers are sites of $r$-process nucleosynthesis. However, the observed signatures in the spectra of GW170817/AT2017gfo have not been fully…

高能天体物理现象 · 物理学 2022-08-25 Nanae Domoto , Masaomi Tanaka , Daiji Kato , Kyohei Kawaguchi , Kenta Hotokezaka , Shinya Wanajo

We present 3D kilonova radiative transfer simulations for a series of binary neutron star merger models. The masses of the neutron stars are varied as well as the total mass of the system and two different equations of state were used (SFHO…

GW170817/GRB170817A, a short gamma-ray burst arising from a low-mass compact object merger was the first multi-messenger discovery of a compact binary system outside the local galactic neighborhood. From gravitational-wave measurements, we…

高能天体物理现象 · 物理学 2018-10-23 Chris Pankow

We present a search for gravitational waves from merging binary neutron stars which have non-negligible eccentricity as they enter the LIGO observing band. We use the public Advanced LIGO data which covers the period from 2015 through 2017…

高能天体物理现象 · 物理学 2020-03-24 Alexander H. Nitz , Amber Lenon , Duncan A. Brown

We study the gravitational-wave trigger GW231109_235456, a sub-threshold binary neutron star merger candidate observed in the first part of the fourth observing run of the LIGO-Virgo-KAGRA collaboration. Assuming the trigger is of…

高能天体物理现象 · 物理学 2025-10-28 Thibeau Wouters , Anna Puecher , Peter T. H. Pang , Tim Dietrich

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

Mergers of black hole-neutron star (BHNS) binaries have now been observed by GW detectors with the recent announcement of GW200105 and GW200115. Such observations not only provide confirmation that these systems exist, but will also give…

Merging neutron star (NS) binaries may be detected by ground-based gravitational wave (GW) interferometers (e.g. LIGO/VIRGO) within this decade and may also generate electromagnetic radiation detectable by wide-field, fast imaging…

高能天体物理现象 · 物理学 2015-06-12 Dong Lai

Kilonovae, one source of electromagnetic emission associated with neutron star mergers, are powered by the decay of radioactive isotopes in the neutron-rich merger ejecta. Models for kilonova emission consistent with the electromagnetic…

The discovery by Advanced LIGO/Virgo of gravitational waves from the binary neutron star (NS) merger GW170817, and subsequently by astronomers of transient counterparts across the electromagnetic (EM) spectrum, has initiated the era of…

高能天体物理现象 · 物理学 2017-10-18 Brian D. Metzger

Kilonovae are optical flashes produced in the aftermath of neutron star-neutron star mergers (NNMs) or neutron star-black hole mergers (NBMs). In this work, we use the Millennium Simulation, combined with a semi-analytic galaxy formation…

星系天体物理 · 物理学 2020-07-15 Zhen Jiang , Jie Wang , Fenghui Zhang , Li-Xin Li , Lan Wang , Ran Li , Liang Gao , Zhanwen Han , Jun Pan

The detection of the binary neutron star GW170817 together with the observation of electromagnetic counterparts across the entire spectrum inaugurated a new era of multi-messenger astronomy. In this study we incorporate wavelength-dependent…

Kilonovae are a rare class of astrophysical transients powered by the radioactive decay of nuclei heavier than iron, synthesized in the merger of two compact objects. Over the first few days, the kilonova evolution is dominated by a large…

We investigate the nucleosynthesis and kilonova properties of binary neutron-star (NS) merger models which lead to intermediate remnant lifetimes of ~0.1-1seconds until black-hole (BH) formation and describe all components of material…

Massive stars play critical roles for the reionization of the Universe. Individual massive stars at the reionization epoch (z > 6) are too faint to observe and quantify their contributions to reionization. Some massive stars, however,…

高能天体物理现象 · 物理学 2022-02-21 Takashi J. Moriya , Robert M. Quimby , Brant E. Robertson