TMRT Observations of 26 Pulsars at 8.6 GHz
文献类型：期刊论文
| 作者 | 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 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2017-08-20 |
| 卷号 | 845期号:2页码:16 |
| 关键词 | pulsars: general |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aa8170 |
| 通讯作者 | Shen, Zhi-Qiang(zshen@shao.ac.cn) |
| 英文摘要 | 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. |
| WOS关键词 | SCATTERING ICS MODEL ; SOUTHERN PULSARS ; MILLISECOND PULSARS ; EMPIRICAL-THEORY ; FREQUENCY-DEPENDENCE ; RADIO-EMISSION ; INTEGRATED PROFILES ; SPECTRAL BEHAVIOR ; GAMMA-RAY ; POLARIZATION |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000408223500007 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/22622]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Shen, Zhi-Qiang |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 4.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China 5.CSIRO Astron & Space Sci, POB 76, Epping, NSW 1710, Australia 6.Qian Xuesen Lab Space Technol, 104,Youyi Rd, Beijing 100094, Peoples R China 7.Peking Univ, Kavil Inst Astron & Astrophys, Beijing 100871, Peoples R China 8.Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China 9.Peking Univ, State Key Lab Nucl Sci & Technol, Beijing 100871, Peoples R China 10.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Guizhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | 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):16. |
| APA | Zhao, Ru-Shuang.,Wu, Xin-Ji.,Yan, Zhen.,Shen, Zhi-Qiang.,Manchester, R. N..,...&Zhong, Wei-Ye.(2017).TMRT Observations of 26 Pulsars at 8.6 GHz.ASTROPHYSICAL JOURNAL,845(2),16. |
| MLA | Zhao, Ru-Shuang,et al."TMRT Observations of 26 Pulsars at 8.6 GHz".ASTROPHYSICAL JOURNAL 845.2(2017):16. |
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来源：紫金山天文台
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