PMO OpenIR  > 太阳活动的多波段观测研究团组
X-ray source motion along the loop in two solar flares
Ning, Zongjun1,2; Ning, ZJ (reprint author), Acad Sinica, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China. Email: ningzongjun@pmo.ac.cn
2013-08-01
Source PublicationASTROPHYSICS AND SPACE SCIENCE
ISSN0004-640X
Volume346Issue:2Pages:307-318
AbstractWe explore the 3-8 keV X-ray source motion along the loop legs in two solar flares observed by the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) on August 12 and November 28, 2002. Firstly, an artificial loop is constructed to have an outline with a fixed width wide enough to cover the X-ray sources at an energy band between 3-60 keV and at various times. Secondly, RHESSI images are reconstructed at 15 energy bands with an 8 s integration window but 1 s cadence. Thirdly, the X-ray source motions are traced from the brightness distribution along the flare loop. We find that these two events tend to start as a single source at 3-8 keV around the loop top, and then separate into two which move downward along the loop legs. These two almost reach the feet of the loop at the hard X-ray (i.e. at 25-50 keV) peak. After that, the two sources move back upward to the loop top and merge together at the same position where they began. The typical timescale is about similar to 70 s, and the maximum speed can reach 1000 km s(-1). Such a downward-to-upward motion along the loop is rarely seen in the observations, and it seems to be consistent with the density evolution at the loop top, first decreasing after heating and then increasing due to evaporation.
KeywordSun: Flares Sun: X-ray Bursts, Hard
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s10509-013-1461-y
WOS KeywordMAGNETIC RECONNECTION RATE ; 2003 NOVEMBER 3 ; CHROMOSPHERIC EVAPORATION ; PARTICLE-ACCELERATION ; FOOTPOINT MOTIONS ; 2-RIBBON FLARES ; CURRENT SHEET ; HARD ; RHESSI ; FIELD
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000321214800002
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/9962
Collection太阳活动的多波段观测研究团组
Corresponding AuthorNing, ZJ (reprint author), Acad Sinica, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China. Email: ningzongjun@pmo.ac.cn
Affiliation1.Acad Sinica, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China
2.Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Ning, Zongjun,Ning, ZJ . X-ray source motion along the loop in two solar flares[J]. ASTROPHYSICS AND SPACE SCIENCE,2013,346(2):307-318.
APA Ning, Zongjun,&Ning, ZJ .(2013).X-ray source motion along the loop in two solar flares.ASTROPHYSICS AND SPACE SCIENCE,346(2),307-318.
MLA Ning, Zongjun,et al."X-ray source motion along the loop in two solar flares".ASTROPHYSICS AND SPACE SCIENCE 346.2(2013):307-318.
Files in This Item:
File Name/Size DocType Version Access License
2013213X-ray source (1969KB) 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ning, Zongjun]'s Articles
[Ning, ZJ (reprint author), Acad Sinica, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China. Email: ningzongjun@pmo.ac.cn]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ning, Zongjun]'s Articles
[Ning, ZJ (reprint author), Acad Sinica, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China. Email: ningzongjun@pmo.ac.cn]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ning, Zongjun]'s Articles
[Ning, ZJ (reprint author), Acad Sinica, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China. Email: ningzongjun@pmo.ac.cn]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2013213X-ray source motion along the loop in two solar flares.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

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