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Giant Micropulse Emission in the Vela Pulsar at theCBand
Chen, J. L.1; Wen, Z. G.2,3; Hao LF(郝龙飞)4; Yuan, J. P.2,3; Li, J.2,3,5; Wang, H. G.2,6; Yan, W. M.2,3; Lee, K. J.7; Wang, N.2,3; Xu YH(徐永华)4; Li ZX(李志玄)4; Huang YX(黄玉祥)4; Yuen, R.2; Mijit, M.8
Source PublicationASTROPHYSICAL JOURNAL
2020-08-01
Volume899Issue:2Pages:7
DOI10.3847/1538-4357/aba2e8
Contribution Rank第4完成单位
Indexed BySCI
KeywordRadio pulsars
Abstract

We present here the analysis of giant micropulses from the Vela pulsar. A total of 4187 giant micropulses with peak flux density >2.5 Jy were detected during almost 4 hr of observations carried out with the Yunnan 40 m radio telescope at 6800 MHz. Nine of the giant micropulses arrived approximately 3-4 ms earlier than the peak of average pulse profile, longer than that at lower frequencies. The remaining giant micropulses were clustered into three distributions that correspond to three main emission regions, including four giant micropulses occurring on the trailing edge of the averaged profile. We find that the peak flux density distribution follows a power law with index alpha -4. Furthermore, a certain amount of memory is present from the giant micropulse waiting time distribution. Possible emission mechanisms are discussed.

Funding ProjectWest Light Foundation of Chinese Academy of Sciences[WLFC 2016-QNXZ-B-24] ; Chinese National Science Foundation[U1838109] ; Chinese National Science Foundation[U1731238] ; Chinese National Science Foundation[U1831102] ; Chinese National Science Foundation[U1631106] ; Chinese National Science Foundation[11873080] ; National Basic Research Program of China (973 Program)[2015CB857100] ; prospective project of the Astronomical Research Center of the Chinese Academy of Sciences ; National Program on Key Research and Development Project[2016YFA0400804] ; 2018 project of Xinjiang uygur autonomous region of China ; Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi[2019L0863]
Funding OrganizationWest Light Foundation of Chinese Academy of Sciences[WLFC 2016-QNXZ-B-24] ; Chinese National Science Foundation[U1838109, U1731238, U1831102, U1631106, 11873080] ; National Basic Research Program of China (973 Program)[2015CB857100] ; prospective project of the Astronomical Research Center of the Chinese Academy of Sciences ; National Program on Key Research and Development Project[2016YFA0400804] ; 2018 project of Xinjiang uygur autonomous region of China ; Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi[2019L0863]
Language英语
Subject Area天文学 ; 射电天文学
MOST Discipline Catalogue理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000563106400001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordRADIO PULSES ; SINGLE-PULSE ; SPECTRA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/23666
Collection射电天文研究组
Corresponding AuthorWen, Z. G.
Affiliation1.Department of Physics & Electronic Engineering, Yuncheng University, Yuncheng, Shanxi, 044000, People's Republic of China
2.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150, Science-1 Street, Urumqi, Xinjiang, 830011, People's Republic of China
3.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China
4.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, 650011, People's Republic of China
5.Key Laboratory of Microwave Technoloty, Urumqi, Xinjiang, 830011, People's Republic of China
6.School of Physics and Electronic Engineering, Guangzhou University, 510006 Guangzhou, People's Republic of China
7.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing, 100871, People's Republic of China
8.School of Physics, Xinjiang University, Urumqi 830046, People's Republic of China
Recommended Citation
GB/T 7714
Chen, J. L.,Wen, Z. G.,Hao LF,et al. Giant Micropulse Emission in the Vela Pulsar at theCBand[J]. ASTROPHYSICAL JOURNAL,2020,899(2):7.
APA Chen, J. L..,Wen, Z. G..,Hao LF.,Yuan, J. P..,Li, J..,...&Mijit, M..(2020).Giant Micropulse Emission in the Vela Pulsar at theCBand.ASTROPHYSICAL JOURNAL,899(2),7.
MLA Chen, J. L.,et al."Giant Micropulse Emission in the Vela Pulsar at theCBand".ASTROPHYSICAL JOURNAL 899.2(2020):7.
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