The Classifications of Double Neutron Stars and their Correlations with the Binary Orbital Parameters

doi:10.1088/1538-3873/ab00ca

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	The Classifications of Double Neutron Stars and their Correlations with the Binary Orbital Parameters
	Yang,Yi-Yan 1,2,3; Zhang,Cheng-Min 3,4,5; Li,Di 3,4,5; Chen,Li 2; Linghu,Rong-Feng 6; Zhi,Qi-Jun 7,8,9
刊名	Publications of the Astronomical Society of the Pacific
	2019-04-22
卷号	131 期号:1000
关键词	stars: neutron (stars:) pulsars: general (stars:) binaries: general
ISSN号	0004-6280
DOI	10.1088/1538-3873/ab00ca
英文摘要	Abstract The statistical distribution of the total mass of 14 double neutron star (DNS) systems (out of 18 pairs observed) is found to be very narrow, with the average and standard deviation as 2.65?±?0.03 M⊙. For the seven pairs of DNSs with the precisely measured masses of the recycled NSs (first formed) and their non-recycled companions (second formed), their masses are homogeneously distributed as 1.38?±?0.02 M⊙ and 1.29?±?0.02 M⊙, respectively. It is shown by the Anderson–Darling and Mann–Whitney–Wilcoxon tests that the first-born NSs share a same distribution, which should be formed by the supernova explosion; however, the second-formed NSs have the different statistical origins, which can be ascribed to three formation mechanisms after the further investigations of their orbital parameters and mass values, for instance, supernova explosion (e.g., PSR B1913+16), electron capture (e.g., PSR J0737-3039B), and ultra-stripped cores in close-orbit systems (e.g., PSR J1411+2551). In addition, by means of Fisher’s discriminant method, through simulation of the two groups of DNS samples that originated from electron-capture supernova and core-collapse supernova, we obtained the linear discriminant equation (e = ?4.5Porb(day)?+?1.1) between the eccentricity and orbital period, which can divide the DNSs into two groups involved in NS formed by electron-capture supernova (core-collapse supernova) without (with) kick.
语种	英语
出版者	The Astronomical Society of the Pacific
WOS记录号	IOP:0004-6280-131-1000-AB00CA
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/26040]
专题	中国科学院国家天文台
作者单位	1.School of Physics and Electronic Science, Guizhou Education University, Guiyang 550018, People’s Republic of China 2.Astronomy Department, Beijing Normal University, Beijing 100875, People’s Republic of China; chenli@bnu.edu.cn 3.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China zhangcm@bao.ac.cn, dili@nao.cas.cn 4.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China 5.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 6.School of Physics and Electronic Science, Guizhou Education University, Guiyang 550025, People’s Republic of China 7.Center of Astronomical Research and Education, NAOC?·?GZNU, Guiyang 550001, People’s Republic of China 8.School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, People’s Republic of China 9.Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University, Guiyang 550001, People’s Republic of China
推荐引用方式 GB/T 7714	Yang,Yi-Yan,Zhang,Cheng-Min,Li,Di,et al. The Classifications of Double Neutron Stars and their Correlations with the Binary Orbital Parameters[J]. Publications of the Astronomical Society of the Pacific,2019,131(1000).
APA	Yang,Yi-Yan,Zhang,Cheng-Min,Li,Di,Chen,Li,Linghu,Rong-Feng,&Zhi,Qi-Jun.(2019).The Classifications of Double Neutron Stars and their Correlations with the Binary Orbital Parameters.Publications of the Astronomical Society of the Pacific,131(1000).
MLA	Yang,Yi-Yan,et al."The Classifications of Double Neutron Stars and their Correlations with the Binary Orbital Parameters".Publications of the Astronomical Society of the Pacific 131.1000(2019).