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The neutron star tidal deformability is a critical parameter which determines the pre-merger gravitational-wave signal in a neutron star merger. In this article, we show how neutron star tidal deformabilities behave in the presence of one…

核理论 · 物理学 2019-05-08 Sophia Han , Andrew W. Steiner

Gravitational wave (GW) detections of binary neutron star inspirals will be crucial for constraining the dense matter equation of state (EoS). We demonstrate a new degeneracy in the mapping from tidal deformability data to the EoS, which…

高能天体物理现象 · 物理学 2023-05-31 Carolyn A. Raithel , Elias R. Most

One of the main targets for ground-based gravitational wave (GW) detectors such as Advanced LIGO (Laser Interferometer Gravitational wave Observatory) and Virgo is coalescences of neutron star (NS) binaries. Even though a NS's macroscopic…

广义相对论与量子宇宙学 · 物理学 2019-05-09 Yong-Beom Choi , Hee-Suk Cho , Chang-Hwan Lee , Young-Min Kim

Studying the properties of ultra-dense matter is one of the key goals of modern neutron star research. The measurement of the tidal deformability from the inspiral of a binary neutron star merger offers one promising method for constraining…

高能天体物理现象 · 物理学 2023-07-26 Carolyn A. Raithel , Elias R. Most

This study investigates the conditions under which gravitational waves (GWs) are emitted during the merger of hot white dwarfs (WDs) in a binary system. Traditionally, these systems consist of two low-mass stars or a more massive WD paired…

太阳与恒星天体物理 · 物理学 2025-01-14 Sílvia P. Nunes , José D. V. Arbañil , César H. Lenzi , Jaziel G. Coelho

The first detection of gravitational waves from the binary neutron star merger event GW170817 has started to provide important new constraints on the nuclear equation of state at high density. The tidal deformability bound of GW170817…

高能天体物理现象 · 物理学 2019-05-29 Rana Nandi , Prasanta Char , Subrata Pal

Extracting the properties of a binary system emitting gravitational waves relies on models describing the last stages of the compact binary coalescence. In this article, we study potential biases inherent to current tidal waveform…

广义相对论与量子宇宙学 · 物理学 2019-07-31 Anuradha Samajdar , Tim Dietrich

The evolution of the gravitational-wave phase in the signal produced by inspiralling binaries of compact stars is modified by the nonzero deformability of the two stars. Hence, the measurement of these corrections has the potential of…

高能天体物理现象 · 物理学 2020-11-03 Zhenyu Zhu , Ang Li , Luciano Rezzolla

We investigate the rotational properties of self-bound strange quark stars using two representative quark matter equations of state (EOS): the vector MIT bag model and the density-dependent quark mass (DDQM) model. Through…

高能天体物理现象 · 物理学 2026-05-08 Adamu Issifu , Andreas Konstantinou , Franciele M. da Silva , Tobias Frederico

The detection of gravitational waves from GW170817 has provided a new opportunity to constrain the equation of state (EOS) of neutron stars. In this article, we investigate the possible existence of quarks inside the neutron star core in…

高能天体物理现象 · 物理学 2021-04-14 Rana Nandi , Subrata Pal

The upper bound of the speed of sound in dense nuclear matter is one of the most interesting but still unsolved problems in Nuclear Physics. Theoretical studies in connection with recent observational data of isolated neutron stars as well…

核理论 · 物理学 2021-01-27 A. Kanakis-Pegios , P. S. Koliogiannis , Ch. C. Moustakidis

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 merger of binary neutron stars (BNSs) is a remarkable astrophysical event where all four fundamental forces interplay dynamically across multiple stages, producing a rich spectrum of multi-messenger signals. These observations present a…

广义相对论与量子宇宙学 · 物理学 2025-07-08 S. K. Maurya , A. Errehymy , Ksh. Newton Singh , G. Mustafa , Saibal Ray

In an early work, we applied a QCD-based equation of state to the study of the stellar structure of self-bound strange stars, obtaining sequences with maximum masses larger than two solar masses and radii ranging from 8 to 12 Km. In this…

核理论 · 物理学 2021-10-13 M. B. Albino , R. Fariello , F. S. Navarra

Within a minimum model for neutron stars consisting of nucleons, electrons and muons at $\beta$-equilibrium using about a dozen Equation of States (EOSs) from microscopic nuclear many-body theories and 40,000 EOSs randomly generated using…

广义相对论与量子宇宙学 · 物理学 2019-05-08 De-Hua Wen , Bao-An Li , Hou-Yuan Chen , Nai-Bo Zhang

We present a rapid analytic framework for predicting kilonova light curves following neutron star (NS) mergers, where the main input parameters are binary-based properties measurable by gravitational wave detectors (chirp mass and mass…

高能天体物理现象 · 物理学 2021-07-07 Matt Nicholl , Ben Margalit , Patricia Schmidt , Graham P. Smith , Evan J. Ridley , James Nuttall

We compute the equation of state (EoS) of strange quark stars (SQSs) with the MIT Bag model using density dependent bag pressure, characterized by a Gaussian distribution function. The bag pressure's density dependence is controlled by…

核理论 · 物理学 2023-11-23 Soumen Podder , Suman Pal , Debashree Sen , Gargi Chaudhuri

The LIGO collaboration recently reported the first gravitational-wave constraints on the tidal deformability of neutron stars. I discuss an inherent ambiguity in the notion of relativistic tidal deformability that, while too small to affect…

广义相对论与量子宇宙学 · 物理学 2018-03-28 Samuel E. Gralla

Tidal deformability measures how NS can comfortably deform as a response to an applied tidal field. We use updated constraints on the mass, radius, and tidal deformability of neutron star (NS) objects and pulsars to examine nuclear…

核理论 · 物理学 2025-07-16 W. M. Seif , A. S. Hashem

The observations of PSR J0952-0607 and the second object in GW190814 event indicate the possible existence of supermassive neutron stars. In this work, by using the Constant-Sound-Speed (CSS) parametrization to describe the equation of…

核理论 · 物理学 2023-08-15 Hongyi Sun , Dehua Wen