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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.
发表期刊ASTROPHYSICAL JOURNAL
2012-01-10
卷号744期号:2
DOI10.1088/0004-637X/744/2/166
产权排序第3完成单位
收录类别SCI
关键词Magnetic Fields Plasmas Sun: Flares Sun: Radio Radiation
摘要A 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.
项目资助者NSFC [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]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000298666400086
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MAGNETIC-FIELD ; BROAD-BAND SPECTROMETER ; RADIO-BURSTS ; FINE-STRUCTURES ; PLASMA RADIATION ; EMISSION ; MODEL ; INSTABILITY ; ABSORPTION ; GHZ
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被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5625
专题射电天文研究组
通讯作者Tan, BL (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.
作者单位1.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
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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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