PMO OpenIR  > 太阳活动的多波段观测研究团组
Bi-directional flows in a C-class solar flare
Ning, Zongjun1,2
2016
Source PublicationASTROPHYSICS AND SPACE SCIENCE
Volume361Issue:1
AbstractWe have explored the bi-directional flows in a C-class solar flare observed by Solar Dynamic Observatory Atmospheric Imaging Assembly (SDO/AIA) on 2012 December 26. This event occurs in a curved magnetic loop connecting a pair of negative and positive fields. The Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) observations show a X-ray source in 3-25 keV stayed at the loop top during the flare. High-cadence AIA observations exhibit many flows movement intermittently along the flare loop. In order to analyze these flows, firstly, the event is cut along the loop direction with a curved slit which is wide enough to include the bulk of ultraviolet (UV) and X-ray emissions. Secondly, after integration the flux along the slit width, we get the space-time slices at 9 AIA wavelengths and in RHESSI 3-25 keV. Thirdly, the derivative is done on the space-time slices. Many bi-directional flows are identified as the oblique streaks on the intensity-gradient space-time slices during the flare lifetime. They almost start from the same position near the loop top, where the X-ray emission is bright in 3-25 keV. Then they move toward the positive and the negative polarity footpoints simultaneously. Their average speed is directly measured about 230 km s(-1), and they exhibit a typical quasi-period of about 3 minutes. The characteristics of these flows, such as bi-directional, simultaneous, symmetrical and quasi-periodic, are the observational constraints for acceleration theories.
KeywordSun Flares And Sun Uv Radiation And Sun X-ray Bursts Hard
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s10509-015-2606-y
WOS Keyword2003 NOVEMBER 3 ; X-RAY SOURCES ; MAGNETIC RECONNECTION ; PARTICLE-ACCELERATION ; ELECTRON-BEAMS ; CORONAL HARD ; RHESSI ; LOOP ; RADIO ; PHASE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000367516500022
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16090
Collection太阳活动的多波段观测研究团组
Affiliation1.Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Ning, Zongjun. Bi-directional flows in a C-class solar flare[J]. ASTROPHYSICS AND SPACE SCIENCE,2016,361(1).
APA Ning, Zongjun.(2016).Bi-directional flows in a C-class solar flare.ASTROPHYSICS AND SPACE SCIENCE,361(1).
MLA Ning, Zongjun."Bi-directional flows in a C-class solar flare".ASTROPHYSICS AND SPACE SCIENCE 361.1(2016).
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
[Ning, Zongjun]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ning, Zongjun]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ning, Zongjun]'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.