中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 国家天文台
  3. 中国科学院国家天文台
Clusters of Solar Radio Spikes Modulated by Quasi-Periodic Pulsations in a Confined Flare

文献类型：期刊论文

作者Huang, Jing1,2; Tan, Chengming2,3; Chen, Xingyao4; Tan, Baolin1,2; Yan, Yihua2,3; Zhang, Yin1; Ma, Suli3; Zhou, Zhichao3; Zhang, Minghui1; Wang, Wei1
刊名UNIVERSE
出版日期2022-07-01
卷号8期号:7页码:14
关键词solar flare solar radio burst spike quasi-periodic pulsation particle acceleration
DOI10.3390/universe8070348
英文摘要Spikes are typical radio bursts in solar flares, which are proposed to be the signal of energy release in the solar corona. The whole group of spikes always shows different spectral patterns in the dynamic spectrum. Here, we present a special new feature at 0.6-2 GHz in a confined flare. Each group of spikes is composed of many quasi-periodic sub-clusters, which are superposed on the broadband quasi-periodic pulsations (QPPs). The quasi-periodic cluster of spikes (QPSs) have very intense emissions, and each cluster includes tens of individual spikes. When the intensity of background pulsation is increased, the intensity, duration and bandwidth of the spike cluster are also enlarged. There are 21 groups of QPSs throughout the confined flare. The central frequency of the whole group shifts from 1.9 to 1.2 GHz, and the duration of each cluster shows a negative exponential decay pattern. We propose that nonthermal electron beams play a crucial role in emitting both pulsations and spikes. The tearing-mode oscillations of a confined flux rope produce periodic accelerated electron beams. These electron beams travel inside the closed magnetic structure to produce frequency drifting pulsations via plasma emission and scattered narrowband spikes by electron-cyclotron maser emission (ECME). The slow rise of flux rope makes the source region move upward, and thus, QPSs shift towards low frequency. We propose that the confined flux rope may provide the essential conditions for the formation of QPSs.
WOS关键词MILLISECOND MICROWAVE SPIKES ; NARROW-BAND SPIKES ; FREQUENCY ; RADIATION ; EMISSION ; CATALOG ; BURSTS ; MODEL
资助项目NSFC[11790301] ; NSFC[12173050] ; NSFC[11973057] ; NSFC[12003048] ; NSFC[11941003] ; National Key R&D Program of China[2021YFA1600500] ; National Key R&D Program of China[2021YFA1600503] ; International Partnership Program of the Chinese Academy of Sciences[183311KYSB20200003] ; Specialized Research Fund for State Key Laboratories
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
出版者MDPI
WOS记录号WOS:000833306000001
资助机构NSFC ; NSFC ; National Key R&D Program of China ; National Key R&D Program of China ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; NSFC ; NSFC ; National Key R&D Program of China ; National Key R&D Program of China ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; NSFC ; NSFC ; National Key R&D Program of China ; National Key R&D Program of China ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; NSFC ; NSFC ; National Key R&D Program of China ; National Key R&D Program of China ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories
源URL[http://ir.bao.ac.cn/handle/114a11/87890]  
专题中国科学院国家天文台
通讯作者Huang, Jing
作者单位1.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Solar Act, 20A Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, 1 Nanertiao, Beijing 100190, Peoples R China
4.Univ Glasgow, Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
推荐引用方式
GB/T 7714		 Huang, Jing,Tan, Chengming,Chen, Xingyao,et al. Clusters of Solar Radio Spikes Modulated by Quasi-Periodic Pulsations in a Confined Flare[J]. UNIVERSE,2022,8(7):14.
APA Huang, Jing.,Tan, Chengming.,Chen, Xingyao.,Tan, Baolin.,Yan, Yihua.,...&Chen, Linjie.(2022).Clusters of Solar Radio Spikes Modulated by Quasi-Periodic Pulsations in a Confined Flare.UNIVERSE,8(7),14.
MLA Huang, Jing,et al."Clusters of Solar Radio Spikes Modulated by Quasi-Periodic Pulsations in a Confined Flare".UNIVERSE 8.7(2022):14.

入库方式： OAI收割

来源：国家天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。