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

被引：241

作者：

Malik, Tuhin ^{[1
]}

Alam, N. ^{[2
,3
]}

Fortin, M. ^{[4
]}

Providencia, C. ^{[5
]}

Agrawal, B. K. ^{[2
,6
]}

Jha, T. K. ^{[1
]}

Kumar, Bharat ^{[6
,7
]}

Patra, S. K. ^{[6
,7
]}

机构：

[1] BITS Pilani, Dept Phys, KK Birla Goa Campus, Sancoale 403726, Goa, India

[2] Saha Inst Nucl Phys, Kolkata 700064, India

[3] Variable Energy Cyclotron Ctr, Theoret Phys Div, 1 AF Bidhannagar, Kolkata 700064, India

[4] Polish Acad Sci, N Copernicus Astron Ctr, Bartycka 18, PL-00716 Warsaw, Poland

[5] Univ Coimbra, Dept Phys, CFisUC, P-3004516 Coimbra, Portugal

[6] Homi Bhabha Natl Inst, Bombay 400094, Maharashtra, India

[7] Inst Phys, Bhubaneswar 751005, Odisha, India

来源：

PHYSICAL REVIEW C | 2018年 / 98卷 / 03期

关键词：

SKYRME PARAMETRIZATION; GROUND-STATE; SUBNUCLEAR; DENSITIES; FORCES;

D O I：

10.1103/PhysRevC.98.035804

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

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 nonrelativistic 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 approximate to 2M(circle dot). 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 and infrared counterpart sets the radius of a canonical 1.4M(circle dot) neutron star to be 11.82 <= R-1.4 <= 13.72 km.

引用

页数：10

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