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The mass distribution of Galactic double neutron stars: constraints on the gravitational-wave sources like GW170817
Zhang, Jianwei1; Yang, Yiyan1,2; Zhang, Chengmin2,3,4; Yang, Wuming1; Li, Di2,3,4; Bi, Shaolan1; Zhang, Xianfei1
2019-10-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume488Issue:4Pages:5020-5028
AbstractThe merger event of double neutron star (DNS) system (GW170817) was detected by the gravitational-wave (GW) detectors (Advanced LIGO and Advanced Virgo) in 2017 for the first time, so their mass distribution has become a significant topic with the new round GW hunting (O3) in 2019. A few models (e.g. Gaussian, two-Gaussian, or mixture-Gaussian) were adopted to draw the mass distribution of observed Galactic DNS systems, however, there is no a confirmed model now due to the small size of DNS samples (N<20). Here we focus on determining the most probable distribution ranges of DNS masses without model selection by assuming the neutron star masses to be uniformly distributed between the lower and upper bounds. We apply a Bayesian analysis and Markov chain Monte Carlo simulation to 15 Galactic DNS systems, and obtain that the component masses of DNS systems should mainly fall in the range of 1.165-1.590M(circle dot), and the predominant ranges for the total mass, mass ratio, and chirp mass lie in 2.535-2.867M(circle dot), 0.741-0.995, and 1.115-1.237M(circle dot), respectively. Our results are in agreement with the properties of DNS in GW170817, whose 90percent credible intervals for the component masses, total masses, mass ratio, and chirp masses are 1.16-1.60M(circle dot), , 0.73-1.00, and , respectively. The above similarity is an important indicator that reveals the source of GW170817 to be a DNS system from the galaxy NGC4993, and our results can be tested by the forthcoming GW hunting O3.
Keywordgravitational waves methods: statistical binaries: general stars: neutron pulsars: general
Funding OrganizationNational Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; CAS ; CAS ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; CAS ; CAS ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; CAS ; CAS ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; CAS ; CAS
DOI10.1093/mnras/stz2020
WOS KeywordMAXIMUM MASS ; PULSAR
Language英语
Funding ProjectNational Natural Science Foundation of China NSFC[11773005] ; National Natural Science Foundation of China NSFC[U1631236] ; National Natural Science Foundation of China NSFC[11703001] ; National Natural Science Foundation of China NSFC[11690024] ; National Natural Science Foundation of China NSFC[11725313] ; National Natural Science Foundation of China NSFC[U1731238] ; National Program on Key Research and Development Project[2017YFA0402600] ; Chinese Academy of Sciences[XDB23000000] ; CAS[114A11KYSB20160008] ; [NAOC-Y834081V01]
Funding OrganizationNational Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; CAS ; CAS ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; CAS ; CAS ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; CAS ; CAS ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; CAS ; CAS
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000484349700044
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/27714
Collection中国科学院国家天文台
Corresponding AuthorZhang, Chengmin; Yang, Wuming; Li, Di
Affiliation1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing 100012, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Jianwei,Yang, Yiyan,Zhang, Chengmin,et al. The mass distribution of Galactic double neutron stars: constraints on the gravitational-wave sources like GW170817[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,488(4):5020-5028.
APA Zhang, Jianwei.,Yang, Yiyan.,Zhang, Chengmin.,Yang, Wuming.,Li, Di.,...&Zhang, Xianfei.(2019).The mass distribution of Galactic double neutron stars: constraints on the gravitational-wave sources like GW170817.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,488(4),5020-5028.
MLA Zhang, Jianwei,et al."The mass distribution of Galactic double neutron stars: constraints on the gravitational-wave sources like GW170817".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 488.4(2019):5020-5028.
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