GW170817: Constraining the nuclear matter equation of state from the neutron star tidal deformability

By Tuhin Malik, N. Alam, M. Fortin, Constança Providência, B. K. Agrawal, T. Jha, B. Kumar, S. Patra. Physical Review C, 2018

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Constraints set on key parameters of the nuclear matter equation of state (EoS) by the values of the tidal deformability, inferred from GW170817, are examined by using a diverse set of relativistic and non-relativistic mean field models. These models are consistent with bulk properties of finite nuclei as well as with the observed lower bound on the maximum mass of neutron star $\sim 2 ~ {\rm M}_\odot$. The tidal deformability shows a strong correlation with specific linear combinations of the isoscalar and isovector nuclear matter parameters associated with the EoS. Such correlations suggest that a precise value of the tidal deformability can put tight bounds on several EoS parameters, in particular, on the slope of the incompressibility and the curvature of the symmetry energy. The tidal deformability obtained from the GW170817 and its UV/optical/infrared counterpart sets the radius of a canonical $1.4~ {\rm M}_{\odot}$ neutron star to be $11.82\leqslant R_{1.4}\leqslant13.72$ km.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f9fed00b0509400056d5a4f07c0ef9b23d697592

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Citations in the corpus

Binary Neutron Star Mergers: Mass Ejection, Electromagnetic Counterparts, and Nucleosynthesis (2018, background): “…2017; Shibata et al. 2017a; Abbott et al. 2018a; Annala et al. 2018; De et al. 2018; Drago et al. 2018; Fattoyev et al. 2018; Hinderer et al. 2018; Malik et al. 2018; Most et al. 2018b; Nandi et al. 2018; Paschalidis et al. 2018; Radice et al. 2018c; Rezzolla et al. 2018; Ruiz et al. 2018; Tews…”
Progress in Constraining Nuclear Symmetry Energy Using Neutron Star Observables Since GW170817 (2021, unknown): “[57], (3), (4), and (5) are from Biswas et al.”
A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation (2019, background): “…from analysis of the NS binary merger event GW170817 (Abbott et al. 2018; Annala et al. 2018; Most et al. 2018; Tews et al. 2018b; Lim & Holt 2018; Malik et al. 2018; Carson et al. 2019; Li & Sedrakian 2019; Montaña et al. 2019), and consideration is already being given to combining constraints…”