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 |
DOI | 10.3847/2041-8213/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. |
入库方式: OAI收割
来源:紫金山天文台
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