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题名: Discovery of two new pulsars in 47 Tucanae (NGC 104)
作者: Pan, Z.1; Hobbs, G.2; Li, D.1, 3; Ridolfi, A.4; Wang, P.1; Freire, P.4
刊名: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期: 2016-06-11
卷号: 459, 期号:1, 页码:L26-L30
关键词: pulsars: general
DOI: 10.1093/mnrasl/slw037
文章类型: Article
英文摘要: We report the discovery of two new millisecond pulsars (PSRs J0024-7204aa and J0024-7204ab) in the globular cluster 47 Tucanae (NGC 104). Our results bring the total number of pulsars in 47 Tucanae to 25. These pulsars were discovered by reprocessing archival observations from the Parkes radio telescope. We reprocessed the data using a standard search procedure based on the PRESTO software package as well as using a new method in which we incoherently added the power spectra corresponding to similar to 1100 h of observations. The newly discovered PSR J0024-7204aa, has a pulse frequency of similar to 541 Hz (corresponding to a similar to 1.84 ms period), which is higher than any other pulsars currently known in the cluster and ranks 12th amongst all the currently known pulsars. The dispersion measure of this pulsar, 24.941(7) cm(-3) pc, is the highest in the cluster. The second discovered pulsar, PSR J0024-7204ab, is an isolated pulsar with a pulse frequency of similar to 270 Hz (corresponding to a period of similar to 3.70 ms).
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: GLOBULAR-CLUSTER 47-TUCANAE ; MILLISECOND PULSARS ; TELESCOPE ; TERZAN-5
收录类别: SCI
项目资助者: National Basic Research Program of China (973 program)(2012CB821800) ; National Natural Science foundation of China(11373038) ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences(XDB09000000) ; Chinese Academy of Sciences (CAS) ; Commonwealth of Australia ; European Research Council(279702) ; Bonn-Cologne Graduate School of Physics and Astronomy
语种: 英语
WOS记录号: WOS:000376388000006
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16216
Appears in Collections:太阳活动的多波段观测研究团组_期刊论文

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作者单位: 1.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100012, Peoples R China
2.CSIRO, Astron & Space Sci, POB 76, Epping, NSW 1710, Australia
3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
4.Max Planck Inst Radioastron, MPIfR, Hugel 69, D-53121 Bonn, Germany
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