PMO OpenIR  > 太阳活动的多波段观测研究团组
MICROWAVE TYPE III PAIR BURSTS IN SOLAR FLARES
Tan, Baolin1; Meszarosova, Hana2; Karlicky, Marian2; Huang, Guangli3; Tan, Chengming1
2016-03-01
Source PublicationASTROPHYSICAL JOURNAL
Volume819Issue:1
AbstractA solar microwave type III pair burst is composed of normal and reverse-sloped (RS) burst branches with oppositely fast frequency drifts. It is the most sensitive signature of the primary energy release and electron accelerations in flares. This work reports. 11 microwave type III pair events in 9 flares observed by radio spectrometers in China and the Czech Republic at a. frequency of 0.80-7.60 GHz during 1994-2014. These type III pairs occurred in flare impulsive and postflare phases with separate frequencies. in the. range of 1.08-3.42 GHz and a. frequency gap of 10-1700 MHz. The frequency drift increases with the separate frequency (f(x)), the lifetime of each burst is anti-correlated to f(x), while the frequency gap is independent of f(x). In most events, the normal branches are drifting obviously faster than the RS branches. The type III pairs occurring in flare impulsive phase have lower separate frequencies, longer lifetimes, wider frequency gaps, and slower frequency drifts than that occurring in postflare phase. Also,. the latter always has strong circular polarization. Further analysis indicates that near the flare energy. release sites the plasma density is about 1010-1011 cm(-3) and the. temperature is. higher than 107 K. These results provide new constraints to the acceleration mechanism in solar flares.
KeywordSun: Corona Sun: Flares Sun: Particle Emission Sun: Radio Radiation
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.3847/0004-637X/819/1/42
WOS KeywordHARD X-RAY ; RADIO-BURSTS ; MAGNETIC RECONNECTION ; ELECTRON-BEAMS ; CHROMOSPHERIC EVAPORATION ; ENERGETIC ELECTRONS ; EMISSION ; CORONA ; ACCELERATION ; PULSATIONS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000372303400042
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16174
Collection太阳活动的多波段观测研究团组
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
2.Acad Sci Czech Republic, Astron Inst, CZ-25165 Ondrejov, Czech Republic
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Tan, Baolin,Meszarosova, Hana,Karlicky, Marian,et al. MICROWAVE TYPE III PAIR BURSTS IN SOLAR FLARES[J]. ASTROPHYSICAL JOURNAL,2016,819(1).
APA Tan, Baolin,Meszarosova, Hana,Karlicky, Marian,Huang, Guangli,&Tan, Chengming.(2016).MICROWAVE TYPE III PAIR BURSTS IN SOLAR FLARES.ASTROPHYSICAL JOURNAL,819(1).
MLA Tan, Baolin,et al."MICROWAVE TYPE III PAIR BURSTS IN SOLAR FLARES".ASTROPHYSICAL JOURNAL 819.1(2016).
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