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Revisiting pulsar velocities using Gaia Data Release 2
Yang, Meng1,2; Dai, Shi3,4; Li, Di2,5,6; Tsai, Chao-Wei2,5; Zhu, Wei-Wei2,5; Zhang, Jie7
2021-08-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume21Issue:6Pages:7
AbstractPrecise measurements of neutron star (NS) velocities provide critical clues in regard to the supernova physics and evolution of binary systems. Based on Gaia Data Release 2 (DR2), we selected a sample of 24 young (< 3 Myr) pulsars with precise parallax measurements and measured the velocity of their local standard of rest (LSR) and the velocity dispersion among their respective local stellar groups. The median velocity difference between thus calculated LSRs and the Galactic rotation model is similar to 7.6 km s(-1), small compared to the typical velocity dispersion of similar to 27.5 km s(-1). For pulsars off the Galactic plane, such differences grow significantly to as large as similar to 40 km s(-1). More importantly, the velocity dispersion of stars in the local group of low-velocity pulsars can be comparable to their transverse velocities, suggesting that the intrinsic velocities of NS progenitors should be taken into account when we consider their natal kicks and binary evolution. We also examined the double NS system J0737-3039A/B, and measured its transverse velocity to be 26(-13)(+18) km s(-1) assuming nearby Gaia sources are representative of their birth environment. This work demonstrated the feasibility and importance of using Gaia data to study the velocity of individual systems and velocity distribution of NSs.
Keyword(stars:)) pulsars: general
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council Discovery Early Career Award by the Australian Government ; Australian Research Council Discovery Early Career Award by the Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council Discovery Early Career Award by the Australian Government ; Australian Research Council Discovery Early Career Award by the Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council Discovery Early Career Award by the Australian Government ; Australian Research Council Discovery Early Career Award by the Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council Discovery Early Career Award by the Australian Government ; Australian Research Council Discovery Early Career Award by the Australian Government
DOI10.1088/1674-4527/21/6/141
WOS KeywordPROPER MOTIONS ; NEUTRINO TRANSPORT ; DISTANCE ; PARALLAX ; KINEMATICS ; ASTROMETRY ; ORIGIN ; DYNAMICS ; COLLAPSE ; KICKS
Language英语
Funding ProjectNational Natural Science Foundation of China[11988101] ; National Natural Science Foundation of China[11725313] ; National Natural Science Foundation of China[U2031121] ; Australian Research Council Discovery Early Career Award by the Australian Government[DE210101738]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council Discovery Early Career Award by the Australian Government ; Australian Research Council Discovery Early Career Award by the Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council Discovery Early Career Award by the Australian Government ; Australian Research Council Discovery Early Career Award by the Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council Discovery Early Career Award by the Australian Government ; Australian Research Council Discovery Early Career Award by the Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council Discovery Early Career Award by the Australian Government ; Australian Research Council Discovery Early Career Award by the Australian Government
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000684230700001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/75988
Collection中国科学院国家天文台
Corresponding AuthorDai, Shi
Affiliation1.China West Normal Univ, Nanchong 637000, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
3.Western Sydney Univ, Sch Sci, Locked Bag 1797, Penrith, NSW 2751, Australia
4.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr, ZA-4000 Durban, South Africa
7.Qilu Normal Univ, Zhangqiu 250200, Peoples R China
Recommended Citation
GB/T 7714
Yang, Meng,Dai, Shi,Li, Di,et al. Revisiting pulsar velocities using Gaia Data Release 2[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(6):7.
APA Yang, Meng,Dai, Shi,Li, Di,Tsai, Chao-Wei,Zhu, Wei-Wei,&Zhang, Jie.(2021).Revisiting pulsar velocities using Gaia Data Release 2.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(6),7.
MLA Yang, Meng,et al."Revisiting pulsar velocities using Gaia Data Release 2".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.6(2021):7.
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