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MICROWAVE ZEBRA PATTERN STRUCTURES IN THE X2.2 SOLAR FLARE ON 2011 FEBRUARY 15
Tan, BL1; Yan, YH1; Tan, CM1; Sych, R1,2; Gao GN(高冠男)3; Tan, BL (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.
Source PublicationASTROPHYSICAL JOURNAL
2012-01-10
Volume744Issue:2
DOI10.1088/0004-637X/744/2/166
Contribution Rank第3完成单位
Indexed BySCI
KeywordMagnetic Fields Plasmas Sun: Flares Sun: Radio Radiation
AbstractA zebra pattern (ZP) structure is the most intriguing fine structure on the dynamic spectrograph of a solar microwave burst. On 2011 February 15, an X2.2 flare event erupted on the solar disk, which is the first X-class flare since the solar Schwabe cycle 24. It is interesting that there are several microwave ZPs observed by the Chinese Solar Broadband Radio Spectrometer (SBRS/Huairou) at a frequency of 6.40-7.00 GHz (ZP1) and at a frequency of 2.60-2.75 GHz (ZP2) and by the Yunnan Solar Broadband Radio Spectrometer (SBRS/Yunnan) at a frequency of 1.04-1.13 GHz (ZP3). The most important phenomenon is the unusual high-frequency ZP structure (ZP1, up to 7.00 GHz) that occurred in the early rising phase of the flare and the two ZP structures (ZP2, ZP3) with relatively low frequencies that occurred in the decay phase of the flare. By scrutinizing the current prevalent theoretical models of ZP structure generations and comparing their estimated magnetic field strengths in the corresponding source regions, we suggest that the double plasma resonance model is the most probable one for explaining the formation of microwave ZPs, which may derive the magnetic field strengths at about 230-345 G, 126-147 G, and 23-26 G in the source regions of ZP1, ZP2, and ZP3, respectively.
Funding OrganizationNSFC [10733020, 10873021, 10921303] ; MOST [2011CB811401] ; National Major Scientific Equipment RD Project [ZDYZ2009-3] ; RFBR [10-02-00153, 11-02-10000-k] ; European Community ; Chinese Academy of Sciences [2010T2J24] ; CAS-NSFC [10978006]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-637X
URL查看原文
WOS IDWOS:000298666400086
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MAGNETIC-FIELD ; BROAD-BAND SPECTROMETER ; RADIO-BURSTS ; FINE-STRUCTURES ; PLASMA RADIATION ; EMISSION ; MODEL ; INSTABILITY ; ABSORPTION ; GHZ
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Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5625
Collection射电天文研究组
Corresponding AuthorTan, BL (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.
Affiliation1.Key Laboratory of Solar Activity, National Astronomical Observatories Chinese Academy of Sciences, Beijing 100012, China
2.Institute of Solar-Terrestrial Physics of Siberian Branch of Russian Academy of Sciences, Irkutsk 664033, Russia
3.National Astronomical Observatories/Yunnan Astronomical Observatories Chinese Academy of Sciences, Kunming 650011, Yunnan Province, China
Recommended Citation
GB/T 7714
Tan, BL,Yan, YH,Tan, CM,et al. MICROWAVE ZEBRA PATTERN STRUCTURES IN THE X2.2 SOLAR FLARE ON 2011 FEBRUARY 15[J]. ASTROPHYSICAL JOURNAL,2012,744(2).
APA Tan, BL,Yan, YH,Tan, CM,Sych, R,Gao GN,&Tan, BL .(2012).MICROWAVE ZEBRA PATTERN STRUCTURES IN THE X2.2 SOLAR FLARE ON 2011 FEBRUARY 15.ASTROPHYSICAL JOURNAL,744(2).
MLA Tan, BL,et al."MICROWAVE ZEBRA PATTERN STRUCTURES IN THE X2.2 SOLAR FLARE ON 2011 FEBRUARY 15".ASTROPHYSICAL JOURNAL 744.2(2012).
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