Consistent Skyrme parametrizations constrained by GW170817

被引：24

作者：

Lourenco, O. ^{[1
]}

Dutra, M. ^{[1
]}

Lenzi, C. H. ^{[1
]}

Biswal, S. K. ^{[2
]}

Bhuyan, M. ^{[3
]}

Menezes, D. P. ^{[4
]}

机构：

[1] DCTA, Inst Tecnol Aeronut, Dept Fis, BR-12228900 Sao Jose Dos Campos, SP, Brazil

[2] Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China

[3] Univ Malaya, Fac Sci, Dept Phys, Kuala Lumpur 50603, Malaysia

[4] Univ Fed Santa Catarina, Depto Fis, CFM, CP 476, BR-88040900 Florianopolis, SC, Brazil

来源：

EUROPEAN PHYSICAL JOURNAL A | 2020年 / 56卷 / 02期

基金：

巴西圣保罗研究基金会; 国家重点研发计划;

关键词：

EQUATION-OF-STATE; NEUTRON-STARS; MATTER; NUCLEI;

D O I：

10.1140/epja/s10050-020-00040-z

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：

The high-density behavior of stellar matter composed of nucleons and leptons under beta equilibrium and charge neutrality conditions is studied with the Skyrme parametrizations shown to be consistent (Consistent Skyrme Parametrizations, CSkP) with nuclear matter, pure neutron matter, symmetry energy and its derivatives in a set of 11 constraints [Dutra et al., Phys. Rev. C 85, 035201 (2012)]. The predictions of these parametrizations on the tidal deformabilities related to the GW170817 event are also examined. The CSkP that produce massive neutron stars give a range of 11.86km <= R1.4 <= 12.55km for the canonical star radius, in agreement with other theoretical predictions. It is shown that the CSkP are compatible with the region of masses and radii obtained from the analysis of recent data from LIGO and Virgo Collaboration (LVC). A correlation between dimensionless tidal deformability and radius of the canonical star is found, namely, ?1.4 approximate to 3.16x10-6R1.47.35, with results for the CSkP compatible with the recent range of ?1.4=190-120+390 from LVC. An analysis of the ?1x?2_2$$\end{document} graph shows that all the CSkP are compatible with the recent bounds obtained by LVC. Finally, the universal correlation between the moment of inertia and the deformability of a neutron star, named the I-Love relation, is verified for the CSkP; it is also shown to be consistent with the prediction for the moment of inertia of the PSR J0737-3039 primary component pulsar.

引用

页数：11

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