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5.0 GHz TMRT Observations of 71 Pulsars
Zhao, Ru-Shuang1,2; Yan, Zhen1,3; Wu, Xin-Ji4; Shen, Zhi-Qiang1,3; Manchester, R. N.5; Liu, Jie1,6; Qiao, Guo-Jun4; Xu, Ren-Xin4; Lee, Ke-Jia7
2019-03-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume874Issue:1Pages:27
Corresponding AuthorShen, Zhi-Qiang(zshen@shao.ac.cn)
AbstractWe present integrated pulse profiles at 5 GHz for 71 pulsars, including eight millisecond pulsars (MSPs), obtained using the Shanghai Tian Ma Radio Telescope. Mean flux densities and pulse widths are measured. For 19 normal pulsars and one MSP, these are the first detections at 5 GHz-and for a further 19, including five MPSs, the profiles have a better signal-to-noise ratio than previous observations. Mean flux density spectra between 400 MHz and 9 GHz are presented for 27 pulsars and correlations of power-law spectral index are found with characteristic age, radio pseudo-luminosity, and spin-down luminosity. Mode changing was detected in five pulsars. The separation between the main pulse and interpulse is shown to be frequency independent for six pulsars, but a frequency dependence of the relative intensity of the main pulse and interpulse is found. The frequency dependence of component separations is investigated for 20 pulsars, and three groups are found: in seven cases, the separation between the outmost leading and trailing components decreases with frequency, roughly in agreement with radius-to-frequency mapping; in 11 cases, the separation is nearly constant; in the remaining two cases, the separation between the outmost components increases with frequency. We obtain the correlations of pulse widths with pulsar period and estimate the core widths of 23 multicomponent profiles and conal widths of 17 multicomponent profiles at 5.0 GHz using Gaussian fitting, and we discuss the width-period relationship at 5 GHz compared with the results at at 1.0 and 8.6 GHz.
Keywordpulsars: general radiation mechanisms: non-thermal
DOI10.3847/1538-4357/ab05de
WOS KeywordEMPIRICAL-THEORY ; RADIO PULSARS ; FREQUENCY-DEPENDENCE ; MILLISECOND PULSARS ; SPECTRAL BEHAVIOR ; SOUTHERN PULSARS ; X-RAY ; INTERPULSE EMISSION ; DRIFTING SUBPULSES ; WIDTH STATISTICS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000462490200002
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/24229
Collection中国科学院紫金山天文台
Corresponding AuthorShen, Zhi-Qiang
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
4.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
5.CSIRO Astron & Space Sci, POB 76, Epping, NSW 1710, Australia
6.Shanghai Tech Univ, Shanghai 201210, Peoples R China
7.Peking Univ, Kavil Inst Astron & Astrophys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Ru-Shuang,Yan, Zhen,Wu, Xin-Ji,et al. 5.0 GHz TMRT Observations of 71 Pulsars[J]. ASTROPHYSICAL JOURNAL,2019,874(1):27.
APA Zhao, Ru-Shuang.,Yan, Zhen.,Wu, Xin-Ji.,Shen, Zhi-Qiang.,Manchester, R. N..,...&Lee, Ke-Jia.(2019).5.0 GHz TMRT Observations of 71 Pulsars.ASTROPHYSICAL JOURNAL,874(1),27.
MLA Zhao, Ru-Shuang,et al."5.0 GHz TMRT Observations of 71 Pulsars".ASTROPHYSICAL JOURNAL 874.1(2019):27.
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