Simultaneous 13 cm/3 cm Single-pulse Observations of PSR B0329+54
文献类型：期刊论文
| 作者 | Yan,Zhen2,4; Shen,Zhi-Qiang2,4; Manchester,R. N.5; Ng,C.-Y.6; Weltevrede,P.7; Wang,Hong-Guang8; Wu,Xin-Ji9; Yuan,Jian-Ping1,2; Wu,Ya-Jun2,4; Zhao,Rong-Bing2,4 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2018-03-23 |
| 卷号 | 856期号:1 |
| 关键词 | pulsars: individual (B0329+54) |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aaae64 |
| 英文摘要 | Abstract 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 ～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. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-856-1-AAAE64 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://119.78.226.72/handle/331011/32077]  |
| 专题 | 中国科学院上海天文台 |
| 作者单位 | 1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, People's Republic of China 2.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, People's Republic of China 3.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 4.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, People's Republic of China; yanzhen@shao.ac.cn 5.CSIRO Astronomy and Space Science, P.O. Box 76, Epping NSW 1710, Australia 6.Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China 7.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK 8.School of Physics and Electronic Engineering, Guangzhou University, 510006 Guangzhou, People's Republic of China 9.Department of Astronomy, Peking University, Beijing 100871, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Yan,Zhen,Shen,Zhi-Qiang,Manchester,R. N.,et al. Simultaneous 13 cm/3 cm Single-pulse Observations of PSR B0329+54[J]. The Astrophysical Journal,2018,856(1). |
| APA | Yan,Zhen.,Shen,Zhi-Qiang.,Manchester,R. N..,Ng,C.-Y..,Weltevrede,P..,...&Liu,Jie.(2018).Simultaneous 13 cm/3 cm Single-pulse Observations of PSR B0329+54.The Astrophysical Journal,856(1). |
| MLA | Yan,Zhen,et al."Simultaneous 13 cm/3 cm Single-pulse Observations of PSR B0329+54".The Astrophysical Journal 856.1(2018). |
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来源：上海天文台
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