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TMRT Observations of 26 Pulsars at 8.6 GHz
Zhao, Ru-Shuang1,2; Wu, Xin-Ji3; Yan, Zhen1,4; Shen, Zhi-Qiang1,4; Manchester, R. N.5; Qiao, Guo-Jun3; Xu, Ren-Xin3; Wu, Ya-Jun1,4; Zhao, Rong-Bing1,4; Li, Bin1,4; Du, Yuan-Jie6; Lee, Ke-Jia7; Hao LF(郝龙飞)8; Liu, Qing-Hui1,4; Lu, Ji-Guang3,9; Shang, Lun-Hua10,11; Wang, Jin-Qing1,4; Wang M(汪敏)8; Yuan, Jin1,4; Zhi, Qi-Jun10; Zhong, Wei-Ye1,4; Shen, Zhi-Qiang(Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-08-20
卷号845期号:2
DOI10.3847/1538-4357/aa8170
产权排序第8完成单位
收录类别SCI
关键词Pulsars: General
摘要Integrated pulse profiles at 8.6 GHz obtained with the Shanghai Tian Ma Radio Telescope (TMRT) are presented for a sample of 26 pulsars. Mean flux densities and pulse width parameters of these pulsars are estimated. For 11 pulsars these are the first high-frequency observations and for a further four, our observations have a better signal-to-noise ratio than previous observations. For one (PSR J0742-2822), the 8.6 GHz profile differs from previously observed profiles. A comparison of 19 profiles with those at other frequencies shows that in nine cases, the separation between the outmost leading and trailing components decreases with frequency, which is roughly in agreement with radius-to-frequency mapping, whereas in the other 10 the separation is nearly constant. Different spectral indices of profile components lead to the variation of integrated pulse profile shapes with frequency. In seven pulsars with multi-component profiles, the spectral indices of the central components are steeper than those of the outer components. For the 12 pulsars with multi-component profiles in the high-frequency sample, we estimate the core width using Gaussian fitting and discuss the width-period relationship.
项目资助者National Natural Science Foundation of China(11173046, 11403073, U1631122, 11633007, 11373011, 11673002) ; Natural Science Foundation of Shanghai(13ZR1464500) ; Strategic Priority Research Program The Emergence of Cosmological Structures of the Chinese Academy of Sciences(XDB09000000, XDB23010200) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX1-YW-18) ; Scientific Program of Shanghai Municipality(08DZ1160100)
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000408223500007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SCATTERING ICS MODEL ; SOUTHERN PULSARS ; MILLISECOND PULSARS ; EMPIRICAL-THEORY ; FREQUENCY-DEPENDENCE ; RADIO-EMISSION ; INTEGRATED PROFILES ; SPECTRAL BEHAVIOR ; GAMMA-RAY ; POLARIZATION
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/11883
专题射电天文研究组
通讯作者Shen, Zhi-Qiang(Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China)
作者单位1.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.School of Physics, Peking University, Beijing 100871, China
4.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China
5.CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710, Australia
6.Qian Xuesen Laboratory of Space Technology, NO. 104, Youyi Road, Haidian District, Beijing 100094, China
7.Kavil Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China
8.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China
9.State Key Laboratory of nuclear Science and Technology, Peking University, Beijing 100871, China
10.School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, China
11.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
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Zhao, Ru-Shuang,Wu, Xin-Ji,Yan, Zhen,et al. TMRT Observations of 26 Pulsars at 8.6 GHz[J]. ASTROPHYSICAL JOURNAL,2017,845(2).
APA Zhao, Ru-Shuang.,Wu, Xin-Ji.,Yan, Zhen.,Shen, Zhi-Qiang.,Manchester, R. N..,...&Shen, Zhi-Qiang.(2017).TMRT Observations of 26 Pulsars at 8.6 GHz.ASTROPHYSICAL JOURNAL,845(2).
MLA Zhao, Ru-Shuang,et al."TMRT Observations of 26 Pulsars at 8.6 GHz".ASTROPHYSICAL JOURNAL 845.2(2017).
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