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We confront observational data from gravitational wave event GW170817 with microscopic modeling of the cold neutron star equation of state. We develop and employ a Bayesian statistical framework that enables us to implement constraints on…

核理论 · 物理学 2018-08-15 Yeunhwan Lim , Jeremy W. Holt

When binary systems of neutron stars merge, a very small fraction of their rest mass is ejected, either dynamically or secularly. This material is neutron-rich and its nucleosynthesis could provide the astrophysical site for the production…

广义相对论与量子宇宙学 · 物理学 2017-12-13 Luke Bovard , Dirk Martin , Federico Guercilena , Almudena Arcones , Luciano Rezzolla , Oleg Korobkin

We study the long-term evolution of ejecta formed in a binary neutron star (BNS) merger that results in a long-lived remnant NS by performing a hydrodynamics simulation with the outflow data of a numerical relativity simulation as the…

高能天体物理现象 · 物理学 2022-08-31 Kyohei Kawaguchi , Sho Fujibayashi , Masaru Shibata , Masaomi Tanaka , Shinya Wanajo

Searches for gravitational waves from compact-binary mergers, which to date have reported $\sim100$ observations, have previously ignored binaries whose components are both consistent with the mass of neutron stars $(1 M_\odot$ to $ 2…

高能天体物理现象 · 物理学 2024-02-08 Yi-Fan Wang , Alexander H. Nitz

We present Spitzer Space Telescope 3.6 and 4.5 micron observations of the binary neutron star merger GW170817 at 43, 74, and 264 days post-merger. Using the final observation as a template, we uncover a source at the position of GW170817 at…

In this work we investigate the tidal deformability of a neutron star admixed with dark matter, modeled as a massive, self-interacting, complex scalar field. We derive the equations to compute the tidal deformability of the full…

广义相对论与量子宇宙学 · 物理学 2023-09-25 Robin Fynn Diedrichs , Niklas Becker , Cédric Jockel , Jan-Erik Christian , Laura Sagunski , Jürgen Schaffner-Bielich

The observation of the gravitational wave signal GW170817, consistent with emission from the inspiral of a binary neutron-star system, provided information on the tidal deformation of the participating stars. The available data may be…

核理论 · 物理学 2020-05-06 Andrea Sabatucci , Omar Benhar

We report our Spitzer Space Telescope observations and detections of the binary neutron star merger GW170817. At 4.5um, GW170817 is detected at 21.9 mag AB at +43 days and 23.9 mag AB at +74 days after merger. At 3.6um, GW170817 is not…

We construct nuclear matter based on an extended parity doublet model including four light nucleons $N(939)$, $N(1440)$, $N(1535)$, and $N(1650)$. We exclude some values of the chiral invariant masses by requiring the saturation properties…

核理论 · 物理学 2019-08-21 Takahiro Yamazaki , Masayasu Harada

We study mass loss from the outer Lagrange point (L2) in binary stellar mergers and their luminous transients by means of radiative hydrodynamical simulations. Previously, we showed that for binary mass ratios 0.06 < q < 0.8, synchronous L2…

太阳与恒星天体物理 · 物理学 2016-07-28 Ondrej Pejcha , Brian D. Metzger , Kengo Tomida

Gravitational wave astronomy has established its role in measuring the equation of state governing cold supranuclear matter. To date and in the near future, gravitational wave measurements from neutron star binaries are likely to be…

广义相对论与量子宇宙学 · 物理学 2019-09-04 Ka Wa Tsang , Tim Dietrich , Chris Van Den Broeck

With the rapid advancements in next-generation ground-based gravitational wave (GW) detectors, it is anticipated that $10^3$-$10^5$ binary neutron star (BNS) mergers per year will be detected, with a significant fraction accompanied by…

高能天体物理现象 · 物理学 2025-12-04 Zhiwei Chen , Youjun Lu , Hao Ma , Qingbo Chu

In the first work of this series, we adopt a GW170817-like, viewing-angle-dependent kilonova model and the standard afterglow model with the lightcurve distribution based on the properties of cosmological short gamma-ray bursts afterglows…

高能天体物理现象 · 物理学 2022-08-30 Jin-Ping Zhu , Yuan-Pei Yang , Bing Zhang , He Gao , Yun-Wei Yu

When in a tight binary, the mutual tidal deformations of neutron stars imprint onto observables, encoding information about their internal structure at supranuclear densities and gravity in the extreme-gravity regime. Gravitational wave…

广义相对论与量子宇宙学 · 物理学 2016-06-22 Kent Yagi , Nicolas Yunes

The historic first joint detection of both gravitational wave and electromagnetic emission from a binary neutron star merger cemented the association between short gamma-ray bursts (SGRBs) and compact object mergers, as well as providing a…

The first detection of a binary neutron star merger, GW170817, and an associated short gamma-ray burst confirmed that neutron star mergers are responsible for at least some of these bursts. The prompt gamma ray emission from these events is…

高能天体物理现象 · 物理学 2018-05-11 Daniel Williams , James A. Clark , Andrew R. Williamson , Ik Siong Heng

Binary neutron star mergers are the first confirmed site of element nucleosynthesis by the rapid neutron-capture process (r-process). The kilonova AT2017gfo is the only electromagnetic counterpart of a neutron star merger spectroscopically…

高能天体物理现象 · 物理学 2023-11-28 J. H. Gillanders , S. A. Sim , S. J. Smartt , S. Goriely , A. Bauswein

The detection of a binary neutron star merger in 2017 through both gravitational waves and electromagnetic emission opened a new era of multimessenger astronomy. The understanding of the magnetic field amplification triggered by the…

广义相对论与量子宇宙学 · 物理学 2022-03-29 Ricard Aguilera-Miret , Daniele Viganò , Carlos Palenzuela

The detection of the binary events GW170817 and GW190814 has provided invaluable constraints on the maximum mass of nonrotating configurations of neutron stars, $M_{_{\rm TOV}}$. However, the large differences in the neutron-star masses…

高能天体物理现象 · 物理学 2021-03-03 Antonios Nathanail , Elias R. Most , Luciano Rezzolla