中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Wide Bandwidth Observations of Pulsars C, D, and J in 47 Tucanae

文献类型:期刊论文

作者Zhang, Lei7,8,9; Hobbs, George7,9; Manchester, Richard N.7; Li, Di6,8,9; Wang, Pei9; Dai, Shi7,9; Wang, Jingbo5; Kaczmarek, Jane F.7; Cameron, Andrew D.7,9; Toomey, Lawrence7
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2019-11-10
卷号885期号:2页码:6
ISSN号2041-8205
关键词Globular star clusters Radio continuum emission Pulsars
DOI10.3847/2041-8213/ab5218
通讯作者Zhang, Lei(leizhang996@nao.ac.cn)
英文摘要We report the first wide-band observations of pulsars C, D, and J in the globular cluster 47 Tucanae (NGC 104) using the Ultra-Wideband Low (UWL) receiver system recently installed on the Parkes 64 m radio telescope. The wide frequency range of the UWL receiver (704?4032 MHz), along with the well-calibrated system, allowed us to obtain flux density measurements and polarization pulse profiles. The mean pulse profiles have significant linear and circular polarization, allowing for determination of the Faraday rotation measure for each pulsar. Precise measurements of the dispersion measures show a significant deviation in the value for pulsar D compared to earlier results. Searches for new pulsars in the cluster are ongoing and we have determined optimal bands for such searches using the Parkes UWL receiver system.
WOS关键词LONG-TERM OBSERVATIONS ; MILLISECOND PULSARS ; DISCOVERY ; PROFILES
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000499852200001
源URL[http://libir.pmo.ac.cn/handle/332002/35254]  
专题中国科学院紫金山天文台
通讯作者Zhang, Lei
作者单位1.Univ Western Australia, Int Ctr Radio Astron Res, Crawley, WA 6009, Australia
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
3.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Guizhou, Peoples R China
4.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Guizhou, Peoples R China
5.Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
6.Chinese Acad Sci, FAST Collaborat, CAS Key Lab Fast, NAOC, Beijing 100101, Peoples R China
7.CSIRO Astron & Space Sci, POB 76, Epping, NSW 1710, Australia
8.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
9.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714
Zhang, Lei,Hobbs, George,Manchester, Richard N.,et al. Wide Bandwidth Observations of Pulsars C, D, and J in 47 Tucanae[J]. ASTROPHYSICAL JOURNAL LETTERS,2019,885(2):6.
APA Zhang, Lei.,Hobbs, George.,Manchester, Richard N..,Li, Di.,Wang, Pei.,...&Tao, Zhenzhao.(2019).Wide Bandwidth Observations of Pulsars C, D, and J in 47 Tucanae.ASTROPHYSICAL JOURNAL LETTERS,885(2),6.
MLA Zhang, Lei,et al."Wide Bandwidth Observations of Pulsars C, D, and J in 47 Tucanae".ASTROPHYSICAL JOURNAL LETTERS 885.2(2019):6.

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来源:紫金山天文台

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