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An Interplanetary Type IIIb Radio Burst Observed by Parker Solar Probe and Its Emission Mechanism
Chen, Ling1; Ma, Bing1,2; Wu, Dejin1; Zhao, Guoqing3; Tang, Jianfei4; Bale, Stuart D.5,6,7,8
2021-07-01
Source PublicationAstrophysical Journal Letters
ISSN2041-8205
Volume915Issue:1Pages:L22
Contribution Rank4
AbstractType IIIb radio bursts were identified as a chain of quasi-periodic striae in dynamic spectra, drifting from high to low frequencies in a manner similar to type III bursts, which fine structures may provide a clue to a better understanding of emission mechanisms. The approaching observation of the Parker Solar Probe (PSP) spacecraft provides a new chance of probing type IIIb bursts in the vicinity of the Sun. In this Letter, combining the in situ measurement of PSP and the empirical model of solar atmospheres in open magnetic field regions, we analyze in detail a typical event of interplanetary (IP) type IIIb bursts observed by PSP, which was first reported by Pulupa et al. Our results show that the electron cyclotron maser (ECM) emission can probably play an important role in the excitation mechanism of the IP type IIIb burst and the formation of the fine striae structure may be attributed to the modulation of Alfven waves on the growth rate of the ECM instability.
Keywordelectron-cyclotron maser fine-structure alfven waves density statistics plume lines Astronomy & Astrophysics
SubtypeArticle
DOI10.3847/2041-8213/ac0b43
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000669653400001
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/4707
Collection太阳物理研究团组
Corresponding AuthorChen, Ling
Affiliation1.Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, People’s Republic of China;
2.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, People’s Republic of China;
3.Institute of Space Physics, Luoyang Normal University, Luoyang, People’s Republic of China;
4.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, People’s Republic of China;
5.Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450, USA;
6.Physics Department, University of California, Berkeley, CA 94720-7300, USA;
7.The Blackett Laboratory, Imperial College London, London SW7 2AZ, UK;
8.School of Physics and Astronomy, Queen Mary University of London, London E1 4NS, UK
Recommended Citation
GB/T 7714
Chen, Ling,Ma, Bing,Wu, Dejin,et al. An Interplanetary Type IIIb Radio Burst Observed by Parker Solar Probe and Its Emission Mechanism[J]. Astrophysical Journal Letters,2021,915(1):L22.
APA Chen, Ling,Ma, Bing,Wu, Dejin,Zhao, Guoqing,Tang, Jianfei,&Bale, Stuart D..(2021).An Interplanetary Type IIIb Radio Burst Observed by Parker Solar Probe and Its Emission Mechanism.Astrophysical Journal Letters,915(1),L22.
MLA Chen, Ling,et al."An Interplanetary Type IIIb Radio Burst Observed by Parker Solar Probe and Its Emission Mechanism".Astrophysical Journal Letters 915.1(2021):L22.
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