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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
2019-11-08
Source PublicationThe Astrophysical Journal Letters
ISSN2041-8205
Volume885Issue:2
AbstractAbstract 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.
KeywordGlobular star clusters Radio continuum emission Pulsars
DOI10.3847/2041-8213/ab5218
Language英语
WOS IDIOP:2041-8205-885-2-ab5218
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/28644
Collection中国科学院国家天文台
Affiliation1.National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100101, People’s Republic of China; leizhang996@nao.ac.cn, dili@nao.cas.cn
2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3.CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710, Australia
4.FAST Collaboration, CAS Key Laboratory of FAST, NAOC, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China
5.Xinjiang Astronomical Observatory, 150, Science-1 Street, Urumqi, 830011 Xinjiang, People’s Republic of China
6.Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University, Guiyang, 550001, People’s Republic of China
7.School of Physics and Electronic Science, Guizhou Normal University, Guiyang, 550001, People’s Republic of China
8.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People’s Republic of China
9.International Centre for Radio Astronomy Research, University of Western Australia, Crawley, WA 6009, Australia
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
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]. The Astrophysical Journal Letters,2019,885(2).
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.The Astrophysical Journal Letters,885(2).
MLA Zhang,Lei,et al."Wide Bandwidth Observations of Pulsars C, D, and J in 47 Tucanae".The Astrophysical Journal Letters 885.2(2019).
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