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Simultaneous 13cm/3 cm Single-pulse Observations of PSR B0329+54
Yan, Zhen1,8; Shen, Zhi-Qiang1,8; Manchester, R. N.2; Ng, C. -Y.3; Weltevrede, P.4; Wang, Hong-Guang5; Wu, Xin-Ji6; Yuan, Jian-Ping7,8; Wu, Ya-Jun1,8; Zhao, Rong-Bing1,8; Liu, Qing-Hui1,8; Zhao, Ru-Shuang1,9; Liu, Jie1,9
Contribution Rank7

We have investigated the mode changing properties of PSR B0329+54 using 31 epochs of simultaneous 13 cm/3 cm single-pulse observations obtained with the Shanghai Tian Ma 65 m telescope. The pulsar was found in the abnormal emission mode 17 times, accounting for similar to 13% of the 41.6 hr total observation time. Single-pulse analyses indicate that mode changes took place simultaneously at 13 cm/3 cm within a few rotational periods. We detected occasional bright and narrow pulses whose peak flux densities were 10 times higher than that of the integrated profile in both bands. At 3 cm, about 0.66% and 0.27% of single pulses were bright in the normal mode and abnormal mode, respectively, but at 13 cm the occurrence rate was only about 0.007%. We divided the pulsar radiation window into three components (C1, C2, and C3) corresponding to the main peaks of the integrated profile. The bright pulses preferentially occurred at pulse phases corresponding to the peaks of C2 and C3. Fluctuation spectra showed that C2 had excess red noise in the normal mode, but broad quasi-periodic features with central frequencies around 0.12 cycles/period in the abnormal mode. At 3 cm, C3 had a stronger quasi-periodic modulation centered around 0.06 cycles/period in the abnormal mode. Although there were some asymmetries in the two-dimensional fluctuation spectra, we found no clear evidence for systematic subpulse drifting. Consistent with previous low-frequency observations, we found a very low nulling probability for B0329 +54, with upper limits of 0.13% and 1.68% at 13 cm/3 cm, respectively.

KeywordPulsars: Individual (b0329+54)
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordRadio-emission ; Drifting Subpulses ; Intensity Measurements ; Modulation Properties ; Frequency-dependence ; Empirical-theory ; Giant Pulses ; Mode ; Scintillation ; Telescope
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000428306500012
Funding OrganizationNational Natural Science Foundation of China(U1631122, 11403073, 11633007) ; National Basic Research Program of China (973 program)(2012CB821806) ; Strategic Priority Research Program
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Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorYan, Zhen
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.CSIRO Astron & Space Sci, POB 76, Epping, NSW 1710, Australia
3.Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China
4.Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England
5.Guangzhou Univ, Sch Phys & Elect Engn, Guangzhou 510006, Guangdong, Peoples R China
6.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
7.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
8.Chinese Acad Sci, Key Lab Radio Astron, Beijing, Peoples R China
9.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yan, Zhen,Shen, Zhi-Qiang,Manchester, R. N.,et al. Simultaneous 13cm/3 cm Single-pulse Observations of PSR B0329+54[J]. ASTROPHYSICAL JOURNAL,2018,856(1):55.
APA Yan, Zhen.,Shen, Zhi-Qiang.,Manchester, R. N..,Ng, C. -Y..,Weltevrede, P..,...&Liu, Jie.(2018).Simultaneous 13cm/3 cm Single-pulse Observations of PSR B0329+54.ASTROPHYSICAL JOURNAL,856(1),55.
MLA Yan, Zhen,et al."Simultaneous 13cm/3 cm Single-pulse Observations of PSR B0329+54".ASTROPHYSICAL JOURNAL 856.1(2018):55.
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