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
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| 刊名 | The Astrophysical Journal Letters
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| 出版日期 | 2019-11-08 |
| 卷号 | 885期号:2 |
| ISSN号 | 2041-8205 |
| 关键词 | Globular star clusters Radio continuum emission Pulsars |
| DOI | 10.3847/2041-8213/ab5218 |
| 英文摘要 | Abstract 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. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:2041-8205-885-2-AB5218 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/28643]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.International Centre for Radio Astronomy Research, University of Western Australia, Crawley, WA 6009, Australia 2.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People’s Republic of China 3.School of Physics and Electronic Science, Guizhou Normal University, Guiyang, 550001, People’s Republic of China 4.Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University, Guiyang, 550001, People’s Republic of China 5.Xinjiang Astronomical Observatory, 150, Science-1 Street, Urumqi, 830011 Xinjiang, People’s Republic of China 6.FAST Collaboration, CAS Key Laboratory of FAST, NAOC, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China 7.CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710, Australia 8.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 9.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 |
| 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]. 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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来源：国家天文台
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