NSSC OpenIR  > 空间科学部
THREE-DIMENSIONAL MAGNETIC RESTRUCTURING IN TWO HOMOLOGOUS SOLAR FLARES IN THE SEISMICALLY ACTIVE NOAA AR 11283
Liu, Chang; Deng, Na; Lee, Jeongwoo; Wiegelmann, Thomas; Jiang, Chaowei; Dennis, Brian R.; Su, Yang; Donea, Alina; Wang, Haimin; Liu, C (reprint author), New Jersey Inst Technol, Space Weather Res Lab, Newark, NJ 07102 USA.
Department空间科学部
Source PublicationASTROPHYSICAL JOURNAL
2014
Volume795Issue:2Pages:128
ISSN0004-637X
Language英语
KeywordSun: Activity Sun: Flares Sun: Helioseismology Sun: Magnetic Fields Sun: X-rays Gamma Rays
AbstractWe carry out a comprehensive investigation comparing the three-dimensional magnetic field restructuring, flare energy release, and the helioseismic response of two homologous flares, the 2011 September 6 X2.1 (FL1) and September 7 X1.8 (FL2) flares in NOAA AR 11283. In our analysis, (1) a twisted flux rope (FR) collapses onto the surface at a speed of 1.5 km s(-1) after a partial eruption in FL1. The FR then gradually grows to reach a higher altitude and collapses again at 3 km s(-1) after a fuller eruption in FL2. Also, FL2 shows a larger decrease of the flux-weighted centroid separation of opposite magnetic polarities and a greater change of the horizontal field on the surface. These imply a more violent coronal implosion with corresponding more intense surface signatures in FL2. (2) The FR is inclined northward and together with the ambient fields, it undergoes a southward turning after both events. This agrees with the asymmetric decay of the penumbra observed in the peripheral regions. (3) The amounts of free magnetic energy and nonthermal electron energy released during FL1 are comparable to those of FL2 within the uncertainties of the measurements. (4) No sunquake was detected in FL1; in contrast, FL2 produced two seismic emission sources S1 and S2 both lying in the penumbral regions. Interestingly, S1 and S2 are connected by magnetic loops, and the stronger source S2 has a weaker vertical magnetic field. We discuss these results in relation to the implosion process in the low corona and the sunquake generation.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4455
Collection空间科学部
Corresponding AuthorLiu, C (reprint author), New Jersey Inst Technol, Space Weather Res Lab, Newark, NJ 07102 USA.
Recommended Citation
GB/T 7714
Liu, Chang,Deng, Na,Lee, Jeongwoo,et al. THREE-DIMENSIONAL MAGNETIC RESTRUCTURING IN TWO HOMOLOGOUS SOLAR FLARES IN THE SEISMICALLY ACTIVE NOAA AR 11283[J]. ASTROPHYSICAL JOURNAL,2014,795(2):128.
APA Liu, Chang.,Deng, Na.,Lee, Jeongwoo.,Wiegelmann, Thomas.,Jiang, Chaowei.,...&Liu, C .(2014).THREE-DIMENSIONAL MAGNETIC RESTRUCTURING IN TWO HOMOLOGOUS SOLAR FLARES IN THE SEISMICALLY ACTIVE NOAA AR 11283.ASTROPHYSICAL JOURNAL,795(2),128.
MLA Liu, Chang,et al."THREE-DIMENSIONAL MAGNETIC RESTRUCTURING IN TWO HOMOLOGOUS SOLAR FLARES IN THE SEISMICALLY ACTIVE NOAA AR 11283".ASTROPHYSICAL JOURNAL 795.2(2014):128.
Files in This Item: Download All
File Name/Size DocType Version Access License
20147952128.pdf(1109KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, Chang]'s Articles
[Deng, Na]'s Articles
[Lee, Jeongwoo]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, Chang]'s Articles
[Deng, Na]'s Articles
[Lee, Jeongwoo]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, Chang]'s Articles
[Deng, Na]'s Articles
[Lee, Jeongwoo]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 20147952128.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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