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The Equation of State and Some Key Parameters of Neutron Stars: Constraints from GW170817, the Nuclear Data, and the Low-mass X-Ray Binary Data
Jiang,Jin-Liang1,2; Tang,Shao-Peng1,2; Shao,Dong-Sheng1,2; Han,Ming-Zhe1,2; Li,Yin-Jie1,2; Wang,Yuan-Zhu1; Jin,Zhi-Ping1,2; Fan,Yi-Zhong1,2; Wei,Da-Ming1,2
2019-10-29
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume885Issue:1
AbstractAbstract In this work we parameterize the equation of state of dense neutron star (NS) matter with four pressure parameters of and then set the combined constraints with the data of GW170817 and the data of six low-mass X-ray binaries (LMXBs) with thermonuclear burst or alternatively the symmetry energy of the nuclear interaction. We find that the nuclear data effectively narrow down the possible range of , the gravitational-wave data plays the leading role in bounding , and the LMXB data as well as the lower bound on the maximal gravitational mass of non-rotating NSs govern the constraints on and . Using posterior samples of pressure parameters and some universal relations, we further investigate how the current data sets can advance our understanding of tidal deformability (Λ), moment of inertia (I), and binding energy (BE) of NSs. For a canonical mass of 1.4 M⊙, we have , , , and if the constraints from the nuclear data and the gravitational-wave data have been jointly applied. For the joint analysis of gravitational-wave data and the LMXB data, we have , , , and . These results suggest that the current constraints on Λ and R still suffer from significant systematic uncertainties, while I1.4 and BE1.4 are better constrained.
KeywordGravitational waves Neutron star cores Low-mass X-ray binary stars Relativistic binary stars
DOI10.3847/1538-4357/ab44b2
Language英语
WOS IDIOP:0004-637X-885-1-ab44b2
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/28334
Collection中国科学院紫金山天文台
Affiliation1.Key Laboratory of dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210033, People’s Republic of Chinatangsp@pmo.ac.cn, yzfan@pmo.ac.cn
2.School of Astronomy and Space Science, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
Recommended Citation
GB/T 7714
Jiang,Jin-Liang,Tang,Shao-Peng,Shao,Dong-Sheng,et al. The Equation of State and Some Key Parameters of Neutron Stars: Constraints from GW170817, the Nuclear Data, and the Low-mass X-Ray Binary Data[J]. The Astrophysical Journal,2019,885(1).
APA Jiang,Jin-Liang.,Tang,Shao-Peng.,Shao,Dong-Sheng.,Han,Ming-Zhe.,Li,Yin-Jie.,...&Wei,Da-Ming.(2019).The Equation of State and Some Key Parameters of Neutron Stars: Constraints from GW170817, the Nuclear Data, and the Low-mass X-Ray Binary Data.The Astrophysical Journal,885(1).
MLA Jiang,Jin-Liang,et al."The Equation of State and Some Key Parameters of Neutron Stars: Constraints from GW170817, the Nuclear Data, and the Low-mass X-Ray Binary Data".The Astrophysical Journal 885.1(2019).
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