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Wideband Monitoring Observations of PSR J1803-3002A in the Globular Cluster NGC 6522

文献类型：期刊论文

作者Zhang, Lei1,2,3; Manchester, Richard N.3; Cameron, Andrew D.3; Hobbs, George3; Li, Di2,4,5; Dai, Shi3; Zhi, Qijun6,7; Zhu, Zonghong1; Wang, Jingbo8,9,10; Toomey, Lawrence2
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2020-12-01
卷号905期号:1页码:L8
关键词Astronomy data analysis Globular star clusters Pulsars
ISSN号2041-8205
DOI10.3847/2041-8213/abca40
产权排序8
英文摘要We report the first wideband monitoring observations of PSR J1803-3002A, a relatively bright millisecond pulsar (MSP) in the globular cluster NGC 6522 with a spin period of 7.1 ms and no known binary companion. These observations were performed using the Parkes 64 m radio telescope with the Ultra-Wideband Low receiver system, which covers 704-4032 MHz. We confirm that PSR J1803-3002A is an isolated MSP located near the cluster center and probe the emission properties of the pulsar over the wide observed band. The mean pulse profile consists of three components, with the outer components becoming more prominent at higher frequencies, and a mean spectral index for the pulsed emission of -1.66 0.07 over the observed band. The fractional linear and circular polarization increase with increasing frequency, which is unusual for pulsars. We determine a Faraday rotation measure of -107 6 rad m(-2) for the pulsar. PSR J1803-3002A is a distant pulsar in the Galactic plane, but our observations show no evidence of pulse broadening due to interstellar scattering. These results demonstrate the power of ultra-wideband receivers and signal processing systems.
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WOS关键词PULSAR EMISSION ; RADIO
资助项目National Key R&D Program of China[2017YFA0402600] ; National Natural Science Foundation of China[U1731218] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB23000000] ; Foundation of Guizhou Provincial Education Department[(2020)003] ; Science and Technology Fund of Guizhou Province ; Youth Innovation Promotion Association of Chinese Academy of Sciences - Australian Government
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000597136700001
出版者IOP PUBLISHING LTD
资助机构National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Foundation of Guizhou Provincial Education Department ; Science and Technology Fund of Guizhou Province ; Youth Innovation Promotion Association of Chinese Academy of Sciences - Australian Government
源URL[http://ir.xao.ac.cn/handle/45760611-7/3793]  
专题脉冲星研究团组
通讯作者Zhang, Lei; Li, Di
作者单位1.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100101, Peoples R China
3.CSIRO Astron & Space Sci, POB 76, Epping, NSW 1710, Australia
4.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr, ZA-4000 Durban, South Africa
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Peoples R China
7.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China
8.Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Peoples R China
9.Chinese Acad Sci, Key Lab Radio Astron, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
10.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Lei,Manchester, Richard N.,Cameron, Andrew D.,et al. Wideband Monitoring Observations of PSR J1803-3002A in the Globular Cluster NGC 6522[J]. ASTROPHYSICAL JOURNAL LETTERS,2020,905(1):L8.
APA Zhang, Lei.,Manchester, Richard N..,Cameron, Andrew D..,Hobbs, George.,Li, Di.,...&Zhang, Songbo.(2020).Wideband Monitoring Observations of PSR J1803-3002A in the Globular Cluster NGC 6522.ASTROPHYSICAL JOURNAL LETTERS,905(1),L8.
MLA Zhang, Lei,et al."Wideband Monitoring Observations of PSR J1803-3002A in the Globular Cluster NGC 6522".ASTROPHYSICAL JOURNAL LETTERS 905.1(2020):L8.

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