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Three pulsars discovered by FAST in the globular cluster NGC 6517 with a pulsar candidate sifting code based on dispersion measure to signal-to-noise ratio plots

文献类型：期刊论文

作者Pan, Zhichen6,7,8; Ma, Xiao-Yun8; Qian, Lei6,7,8; Wang, Lin6,7,8; Yan, Zhen5; Luo, Jin-Tao4; Ransom, Scott M.3; Lorimer, Duncan R.1,2; Jiang, Peng6,7,8
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2021-08-01
卷号21期号:6页码:7
关键词Pulsar Globular Clusters Individual NGC 6517 methods analytical surveys FAST
ISSN号1674-4527
DOI10.1088/1674-4527/21/6/143
英文摘要We report the discovery of three new pulsars in the globular cluster (GC) NGC 6517, namely NGC 6517 E, F and G, made with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The spin periods of NGC 6517 E, F and G are 7.60 ms, 24.89 ms and 51.59 ms, respectively. Their dispersion measures are 183.29, 183.713 and 185.3 pc cm(-3), respectively, all slightly larger than those of the previously known pulsars in this cluster. The spin period derivatives are at the level of 1 x 10 - 18 s s(-1), which suggests these are recycled pulsars. In addition to the discovery of these three new pulsars, we updated the timing solutions of the known isolated pulsars, NGC 6517 A, C and D. The solutions are consistent with those from Lynch et al. but with smaller timing residuals. From the timing solution, NGC 6517 A, B (position from Lynch et al.), C, E and F are very close to each other on the sky and only a few arcseconds from the optical core of NGC 6517.With currently published and unpublished discoveries, nine pulsars have been discovered in NGC 651, ranking it 6th for GCs with the most known pulsars. The discoveries take advantage of the high sensitivity of FAST and a new algorithm used to check and filter possible candidate signals.
WOS关键词RADIO PULSARS ; PARAMETERS
资助项目Basic Science Center Project of the National Natural Science Foundation of China (NSFC)[11703047] ; Basic Science Center Project of the National Natural Science Foundation of China (NSFC)[11773041] ; Basic Science Center Project of the National Natural Science Foundation of China (NSFC)[U2031119] ; CAS "Light of West China" Program ; Youth Innovation Promotion Association of CAS[2018075] ; NSF Physics Frontiers Center award[1430284] ; FAST group
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000684227500001
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
资助机构Basic Science Center Project of the National Natural Science Foundation of China (NSFC) ; Basic Science Center Project of the National Natural Science Foundation of China (NSFC) ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; NSF Physics Frontiers Center award ; NSF Physics Frontiers Center award ; FAST group ; FAST group ; Basic Science Center Project of the National Natural Science Foundation of China (NSFC) ; Basic Science Center Project of the National Natural Science Foundation of China (NSFC) ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; NSF Physics Frontiers Center award ; NSF Physics Frontiers Center award ; FAST group ; FAST group ; Basic Science Center Project of the National Natural Science Foundation of China (NSFC) ; Basic Science Center Project of the National Natural Science Foundation of China (NSFC) ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; NSF Physics Frontiers Center award ; NSF Physics Frontiers Center award ; FAST group ; FAST group ; Basic Science Center Project of the National Natural Science Foundation of China (NSFC) ; Basic Science Center Project of the National Natural Science Foundation of China (NSFC) ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; NSF Physics Frontiers Center award ; NSF Physics Frontiers Center award ; FAST group ; FAST group
源URL[http://210.72.145.45/handle/361003/10647]  
专题国家授时中心_守时理论与方法研究室
通讯作者Pan, Zhichen
作者单位1.West Virginia Univ, Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA
2.West Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA
3.Natl Radio Astron Observ, Charlottesville, VA 22903 USA
4.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China
5.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 20030, Peoples R China
6.Univ Chinese Acad Sci, Coll Astron & Space Sci, Beijing 100049, Peoples R China
7.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing 100101, Peoples R China
8.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Pan, Zhichen,Ma, Xiao-Yun,Qian, Lei,et al. Three pulsars discovered by FAST in the globular cluster NGC 6517 with a pulsar candidate sifting code based on dispersion measure to signal-to-noise ratio plots[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(6):7.
APA Pan, Zhichen.,Ma, Xiao-Yun.,Qian, Lei.,Wang, Lin.,Yan, Zhen.,...&Jiang, Peng.(2021).Three pulsars discovered by FAST in the globular cluster NGC 6517 with a pulsar candidate sifting code based on dispersion measure to signal-to-noise ratio plots.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(6),7.
MLA Pan, Zhichen,et al."Three pulsars discovered by FAST in the globular cluster NGC 6517 with a pulsar candidate sifting code based on dispersion measure to signal-to-noise ratio plots".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.6(2021):7.

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