NAOC Open IR  > 太阳物理研究部
Observational evidence of very long period pulsations of solar coronal microwave radiation
Xie, RX; Wang, M; Shi, SB; Xu, C; Li, WH; Yan, YH; Sych, RA; Altyntsev, AT
2003-04-01
Source PublicationCHINESE ASTRONOMY AND ASTROPHYSICS
Volume27Issue:2Pages:158-166
AbstractOn 1998 September 23, a rare event was observed with the microwave (1.0-2.0 GHz and 2.6-3.8 GHz) radio spectrograph of National Astronomical Observatories. It was a complex type-IV burst accompanied by multi-periodic pulsations, type-III bursts and type-I like noise storms. This paper focuses on the pulsation components with multiple long periods (about 7.3, 4.9, 3.7, 1.2 and 0.4 minutes). The pulsations may be due to standing waves in closed loops. Magnetohydrodynamic standing Alfven waves driven by the photospheric velocity field penetrate across the magnetic field, and this leads to the modulation of the radio radiation. These pulsations have downward motions, so it is not excluded that disturbances propagating in a closed or an open field structure may have caused the pulsations. The resonance of Alfven waves is concerned with the photospheric 5-minute oscillations, hence pulsations of very long periods may be assumed to come from driving sources in the photosphere. This can imply a possible mutual coupling between coronal magnetic loops and the photosphere.
KeywordSun : Corona Sun : Radio Emission Sun : Oscillations
DOI10.1016/S0275-1062(03)00037-7
Indexed BySCI
Language英语
WOS IDWOS:000183228100006
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8443
Collection太阳物理研究部
Affiliation1.Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Inst Solar Terr Phys, Irkutsk 664033, Russia
Recommended Citation
GB/T 7714
Xie, RX,Wang, M,Shi, SB,et al. Observational evidence of very long period pulsations of solar coronal microwave radiation[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2003,27(2):158-166.
APA Xie, RX.,Wang, M.,Shi, SB.,Xu, C.,Li, WH.,...&Altyntsev, AT.(2003).Observational evidence of very long period pulsations of solar coronal microwave radiation.CHINESE ASTRONOMY AND ASTROPHYSICS,27(2),158-166.
MLA Xie, RX,et al."Observational evidence of very long period pulsations of solar coronal microwave radiation".CHINESE ASTRONOMY AND ASTROPHYSICS 27.2(2003):158-166.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Xie, RX]'s Articles
[Wang, M]'s Articles
[Shi, SB]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xie, RX]'s Articles
[Wang, M]'s Articles
[Shi, SB]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xie, RX]'s Articles
[Wang, M]'s Articles
[Shi, SB]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.