合并中子星的潮汐:GW170817事件与有限核实验数据的一致性

IF 3.2 2区物理与天体物理 Q2 PHYSICS, NUCLEAR

Physical Review C Pub Date : 2019-01-14 DOI:10.1103/PhysRevC.99.052801

Tuhin Malik, B. K. Agrawal, J. De, S. Samaddar, C. Providência, C. Mondal, T. K. Jha

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引用次数: 21

摘要

本文检验了基于GW170817的潮汐变形力推导出的核态方程(EoS)与由微观核经验数据得到的核态方程的一致性。结果发现，适当选择等标量和等矢量敏感核观测数据，加上观测到的中子星最大质量，约束了方程，与GW170817启发的方程具有很好的一致性。发现原子核中的巨共振有助于将潮汐可变形性参数和中子星半径限制在较窄的范围内。正则潮汐变形能力$\Lambda_{1.4}$的值为$267\pm144$，半径$R_{1.4}$的值为$11.6\pm1.0$ km。

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Tides in merging neutron stars: Consistency of the GW170817 event with experimental data on finite nuclei

The harmony of the nuclear equation of state (EoS) deduced from the GW170817 based tidal deformability with the one obtained from empirical data on microscopic nuclei is examined. It is found that suitably chosen experimental data on isoscalar and isovector sensitive nuclear observables complemented with the observed maximum neutron star mass constrain the EoS which displays a very good congruence with the GW170817 inspired one. The giant resonances in nuclei are found to be instrumental in limiting the tidal deformability parameter and the radius of neutron star in narrower bounds. The value of the canonical tidal deformability $\Lambda_{1.4}$ comes out to be $267\pm144$ and that of the radius $R_{1.4}$ is $11.6\pm1.0$ km.

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来源期刊

Physical Review C PHYSICS, NUCLEAR-

CiteScore

5.80

自引率

35.50%

发文量

863

期刊介绍： Physical Review C (PRC) is a leading journal in theoretical and experimental nuclear physics, publishing more than two-thirds of the research literature in the field. PRC covers experimental and theoretical results in all aspects of nuclear physics, including: Nucleon-nucleon interaction, few-body systems Nuclear structure Nuclear reactions Relativistic nuclear collisions Hadronic physics and QCD Electroweak interaction, symmetries Nuclear astrophysics