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Wide Bandwidth Observations of Pulsars C, D, and J in 47 Tucanae
Zhang, Lei1,2,3; Hobbs, George1,3; Manchester, Richard N.3; Li, Di1,2,4; Wang, Pei1; Dai, Shi1,3; Wang, Jingbo5; Kaczmarek, Jane F.3; Cameron, Andrew D.1,3; Toomey, Lawrence3; Zhu, Weiwei1; Zhi, Qijun6,7; Miao, Chenchen1,2; Yuan, Mao1,2; Zhang, Songbo2,3,8,9; Tao, Zhenzhao1,6,7
2019-11-10
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume885Issue:2Pages:6
Corresponding AuthorZhang, Lei(leizhang996@nao.ac.cn)
AbstractWe 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.
KeywordGlobular star clusters Radio continuum emission Pulsars
DOI10.3847/2041-8213/ab5218
WOS KeywordLONG-TERM OBSERVATIONS ; MILLISECOND PULSARS ; DISCOVERY ; PROFILES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000499852200001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/35255
Collection中国科学院紫金山天文台
Corresponding AuthorZhang, Lei
Affiliation1.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.CSIRO Astron & Space Sci, POB 76, Epping, NSW 1710, Australia
4.Chinese Acad Sci, FAST Collaborat, CAS Key Lab Fast, NAOC, Beijing 100101, Peoples R China
5.Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
6.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Guizhou, Peoples R China
7.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Guizhou, Peoples R China
8.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
9.Univ Western Australia, Int Ctr Radio Astron Res, Crawley, WA 6009, Australia
Recommended Citation
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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