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The study of the equation-of-state (EoS) describing the properties of nuclear matter away from the normal conditions is a relevant and intriguing topic of modern nuclear physics. The last decades have witnessed a substantial experimental…

核实验 · 物理学 2023-03-09 P. Russotto , M. D. Cozma , E. De Filippo , A. Le Fèvre , Y. Leifels , J. Łukasik

Multi-messenger observation of binary neutron-star mergers can provide valuable information on the nuclear equation of state (EoS). Here, we investigate to which extent electromagnetic observations of the associated kilonovae allow us to…

高能天体物理现象 · 物理学 2025-08-22 Kelsey A. Lund , Rahul Somasundaram , Gail C. McLaughlin , Jonah M. Miller , Matthew R. Mumpower , Ingo Tews

The first detection of gravitational waves from a neutron star-neutron star merger, GW170817, has opened up a new avenue for constraining the ultradense-matter equation of state (EOS). The deviation of the observed waveform from a…

高能天体物理现象 · 物理学 2019-06-26 Carolyn A. Raithel

We demonstrate by a large set of merger simulations for symmetric binary neutron stars (NSs) that there is a tight correlation between the frequency peak of the postmerger gravitational-wave (GW) emission and the physical properties of the…

太阳与恒星天体物理 · 物理学 2015-05-28 A. Bauswein , H. -Th. Janka

Gravitational waves from neutron-star mergers are expected to provide stringent constraints on the structure of neutron stars. At the same time, recent advances in nuclear theory have enabled reliable calculations of the low density…

核理论 · 物理学 2019-09-04 I. Tews , J. Margueron , S. Reddy

The Einstein Telescope (ET), a proposed next-generation gravitational wave (GW) observatory, will expand the reach of GW astronomy of stellar-mass compact object binaries to unprecedented distances, enhancing opportunities for…

The Einstein Telescope (ET) is going to bring a revolution for the future of multi-messenger astrophysics. In order to detect the counterparts of binary neutron star (BNS) mergers at high redshift, the high-energy observations will play a…

Gravitational-wave (GW) observations of neutron star-black hole (NSBH) mergers are sensitive to the nuclear equation of state (EOS). We present a new methodology for EOS inference with non-parametric Gaussian process (GP) priors, enabling…

广义相对论与量子宇宙学 · 物理学 2024-07-10 Nikhil Sarin , Hiranya V. Peiris , Daniel J. Mortlock , Justin Alsing , Samaya M. Nissanke , Stephen M. Feeney

Recently exploratory studies were performed on the possibility of constraining the neutron star equation of state (EOS) using signals from coalescing binary neutron stars, or neutron star-black hole systems, as they will be seen in upcoming…

The Equation of State (EOS) of dense strongly-interacting matter can be probed by astrophysical observations of neutron stars (NS), such as X-ray detections of pulsars or the measurement of the tidal deformability of NSs during the inspiral…

高能天体物理现象 · 物理学 2023-11-09 Maximiliano Ujevic , Rahul Somasundaram , Tim Dietrich , Jerome Margueron , Ingo Tews

We construct an efficient parameterization of the pure neutron-matter equation of state (EoS) that incorporates the uncertainties from both chiral effective field theory ($\chi$EFT) and phenomenological potential calculations. This…

高能天体物理现象 · 物理学 2024-06-26 Praveer Tiwari , Dake Zhou , Bhaskar Biswas , Michael McNeil Forbes , Sukanta Bose

Exploiting a very large library of physically plausible equations of state (EOSs) containing more than $10^{7}$ members and yielding more than $10^{9}$ stellar models, we conduct a survey of the impact that a neutron-star radius measurement…

高能天体物理现象 · 物理学 2019-08-16 Lukas R. Weih , Elias R. Most , Luciano Rezzolla

Understanding the equation of state (EOS) of neutron stars (NSs) is a fundamental challenge in astrophysics and nuclear physics. A first-order phase transition (FOPT) at high densities could lead to the formation of a quark core,…

高能天体物理现象 · 物理学 2025-05-19 Zuhua Ji , Jiarui Chen , Gaojian Wu

At present, the only experimental access to the properties of cold, dense strongly interacting matter is provided by astrophysical observations. Neutron stars are the only known systems in the Universe that reach densities several times…

高能天体物理现象 · 物理学 2026-04-30 Gábor Kasza , János Takátsy , György Wolf

Latest general relativistic simulations for merger of binary neutron stars with realistic equations of state (EOSs) show that a hypermassive neutron star of an ellipsoidal figure is formed after the merger if the total mass is smaller than…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Masaru Shibata

The EOS of strongly interacting matter at densities ten to fifteen orders of magnitude larger than the typical density of terrestrial macroscopic objects determines a number of neutron star properties, including the pattern of gravitational…

天体物理学 · 物理学 2009-11-13 Omar Benhar

Gravitational waves (GWs) from binary neutron star (BNS) merger remnants complement constraints from the inspiral phase, mass-radius measurements, and microscopic theory by providing information about the neutron-star equation of state…

高能天体物理现象 · 物理学 2025-09-24 Christian Ecker , Tyler Gorda , Aleksi Kurkela , Luciano Rezzolla

Measurements of neutron star mass and radius or tidal deformability deliver unique insight into the equation of state (EOS) of cold dense matter. EOS inference is very often done using generalized parametric or non-parametric models which…

高能天体物理现象 · 物理学 2024-03-25 Chun Huang , Geert Raaijmakers , Anna L. Watts , Laura Tolos , Constança Providência

We consider the influence of potential quark matter existing at high densities in neutron star interiors on gravitational waves (GW) emitted in a binary neutron star merger event. Two types of equations of state (EoS) at zero temperatures…

天体物理学 · 物理学 2009-11-10 R. Oechslin , K. Uryū , G. Poghosyan , F. K. Thielemann

We investigate the constraints on the neutron star equation of state (EoS) and nuclear properties achievable with third-generation gravitational wave detectors using the Fisher information matrix approach within the relativistic mean field…

高能天体物理现象 · 物理学 2026-05-29 Zhenyu Zhu , Richard O'Shaughnessy