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Fine structure of microwave emission in the 25 August 1999 event and its association with the magnetic field fine structure
Ledenev, VG; Sych, RA; Yan, Y; Fu, Q; Wu, H
2005-12-01
Source PublicationJOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
ISSN1364-6826
Volume67Issue:17-18Pages:1720-1727
AbstractA study is made of the initial stage of the 25 August 1999, event using high time-resolution microwave observations, as well as the data from the Siberian Solar Radio Telescope and Yohkoh/SXT/HXT. Microwave emission revealed fine structures with a typical time scale of about 1 s with a frequency drift similar to 1 GHz/s, and structures with a typical time scale of less than 0.1 s with a frequency drift similar to 10 GHz/s. Emission bands with a slower frequency drift are generated by energetic electrons subjected to the cyclotron resonance condition. This slower frequency drift is a consequence of a change in plasma density caused by the coalescence of magnetic structures with a typical size of the order of -10(8) cm, while the emission with a faster drift is generated by beams of energetic electrons generating Cherenkov resonance emission. The energetic electron beams are produced as a result of the interaction of magnetic structures similar to 10(6)-10(7) cm in size. (c) 2005 Elsevier Ltd. All rights reserved.
KeywordSolar Flare Microwave Emission Magnetic Field
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.jastp.2005.03.009
WOS KeywordSOLAR-FLARES ; RECONNECTION ; SPIKES ; CORONA ; BAND ; ACCELERATION ; SPECTROMETER ; BURST ; MODEL
Indexed ByISTP ; SCI
Language英语
WOS Research AreaGeochemistry & Geophysics ; Meteorology & Atmospheric Sciences
WOS SubjectGeochemistry & Geophysics ; Meteorology & Atmospheric Sciences
WOS IDWOS:000234449000013
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/4030
Collection期刊(老文献)
Affiliation1.Inst Solar Terr Phys, Irkutsk 664033, Russia
2.Natl Astron Observ, Beijing 100012, Peoples R China
3.Purple Mt Observ, Nanjing 210008, Peoples R China
4.Natl Inst Space Res, Sao Jose Dos Campos, Brazil
Recommended Citation
GB/T 7714
Ledenev, VG,Sych, RA,Yan, Y,et al. Fine structure of microwave emission in the 25 August 1999 event and its association with the magnetic field fine structure[J]. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,2005,67(17-18):1720-1727.
APA Ledenev, VG,Sych, RA,Yan, Y,Fu, Q,&Wu, H.(2005).Fine structure of microwave emission in the 25 August 1999 event and its association with the magnetic field fine structure.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,67(17-18),1720-1727.
MLA Ledenev, VG,et al."Fine structure of microwave emission in the 25 August 1999 event and its association with the magnetic field fine structure".JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS 67.17-18(2005):1720-1727.
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