PMO OpenIR  > 太阳活动的多波段观测研究团组
Power conversion factor in sollar flares
Ning ZongJun1,2
2012-04-01
Source PublicationCHINESE SCIENCE BULLETIN
ISSN1001-6538
Volume57Issue:12Pages:1397-1404
AbstractWith RHESSI data from five solar flares taken from beginning to end, we investigate the power conversion factor p defined as the ratio of the time derivative of total thermal energy (E-RHESSI + E-rad + E-cond) and the kinetic power (P-RHESSI) of nonthermal electrons. Here, E-RHESSI is the computed energy contained in thermal plasmas traced by RHESSI SXRs. Other two contributions (E-rad and E-cond) to the total energy are the energies lost through radiation and conduction, both of which can be derived from the observational data. If both are not considered, mu is only positive before the SXR maximum. However, we find that for each flare studied mu is positive over the whole duration of the soalr flare after taking into account both radiation and conduction. Mean values for mu range from 11.7% to 34.6% for these five events, indicating roughly that about this fraction of the known energy in nonthermal electrons is efficiently transformed into thermal energy from start to end. This fraction is traced by RHESSI SXR observations; the rest is lost. The bulk of the nonthermal energy could heat the plasma low in the atmosphere to drive mass flows (i.e. chromospheric evaporation).
KeywordSolar Flare X-ray Thermal Energy Nonthermal Power
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology
DOI10.1007/s11434-012-5058-6
WOS Keyword2005 SEPTEMBER 13 ; SOLAR-FLARES ; RHESSI ; ENERGY ; EMISSION ; MODEL ; TEMPERATURES ; EVOLUTION ; ERUPTION ; PHASE
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000303218800008
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8132
Collection太阳活动的多波段观测研究团组
Affiliation1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Ning ZongJun. Power conversion factor in sollar flares[J]. CHINESE SCIENCE BULLETIN,2012,57(12):1397-1404.
APA Ning ZongJun.(2012).Power conversion factor in sollar flares.CHINESE SCIENCE BULLETIN,57(12),1397-1404.
MLA Ning ZongJun."Power conversion factor in sollar flares".CHINESE SCIENCE BULLETIN 57.12(2012):1397-1404.
Files in This Item:
File Name/Size DocType Version Access License
2012069Power convers(910KB) 开放获取LicenseView 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
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
File name: 2012069Power conversion factor in sollar flares.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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