TMRT Observations of 26 Pulsars at 8.6 GHz
文献类型：期刊论文
| 作者 | Zhao,Ru-Shuang1,8; Wu,Xin-Ji11; Yan,Zhen1,2; Shen,Zhi-Qiang1,2; Manchester,R. N.3; Qiao,Guo-Jun11; Xu,Ren-Xin11; Wu,Ya-Jun1,2; Zhao,Rong-Bing1,2; Li,Bin1,2 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2017-08-22 |
| 卷号 | 845期号:2 |
| 关键词 | pulsars: general |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aa8170 |
| 英文摘要 | Abstract 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. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-845-2-AA8170 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/35899]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China; zshen@shao.ac.cn 2.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China 3.CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710, Australia 4.Qian Xuesen Laboratory of Space Technology, NO. 104, Youyi Road, Haidian District, Beijing 100094, China 5.Kavil Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China 6.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China 7.State Key Laboratory of nuclear Science and Technology, Peking University, Beijing 100871, China 8.University of Chinese Academy of Sciences, Beijing 100049, China 9.School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, China 10.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, 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]. The Astrophysical Journal,2017,845(2). |
| 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.The Astrophysical Journal,845(2). |
| MLA | Zhao,Ru-Shuang,et al."TMRT Observations of 26 Pulsars at 8.6 GHz".The Astrophysical Journal 845.2(2017). |
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来源：国家天文台
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