PMO OpenIR  > 太阳活动的多波段观测研究团组
Evolution of the sheared magnetic fields of two X-class flares observed by Hinode/XRT
Su, Yingna1,2,3; Golub, Leon1; Van Ballegooijen, Adriaan1; Deluca, Edward E.1; Reeves, Kathy K.1; Sakao, Taro4; Kano, Ryouhei5; Narukage, Noriyuki4; Shibasaki, Kiyoto6
2007
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
Volume59Pages:S785-S791
AbstractWe present multi-wavelength observations of the evolution of the sheared magnetic fields in NOAA Active Region 10930, where two X-class flares occurred on 2006 December 13 and December 14, respectively. Observations made with the X-ray Telescope (XRT) and the Solar Optical Telescope (SOT) aboard Hinode suggest that the gradual formation of the sheared magnetic fields in this active region is caused by the rotation and west-to-east motion of an emerging sunspot. In the pre-flare phase of the two flares, XRT shows several highly sheared X-ray loops in the core field region, corresponding to a filament seen in the TRACE EUV observations. XRT observations also show that part of the sheared core field erupted, and another part of the sheared core field stayed behind during the flares, which may explain why a large part of the filament is still seen by TRACE after the flare. About 2 - 3 hours after the peak of each flare, the core field becomes visible in XRT again, and shows a highly sheared inner and less-sheared outer structure. We also find that the post-flare core field is clearly less sheared than the pre-flare core field, which is consistent with the idea that the energy released during the flares is stored in the highly sheared fields prior to the flare.
KeywordSun : Corona Sun : Filaments Sun : Flares Sun : Magnetic Fields Sun : X-Rays, Gamma Rays
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordCORONAL MASS EJECTIONS ; RAY TELESCOPE ; SOLAR-B ; RELAXATION ; MISSION ; MOTION ; YOHKOH
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000253152600032
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15876
Collection太阳活动的多波段观测研究团组
Affiliation1.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
2.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
4.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan
5.Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
6.Natl Inst Nat Sci, Natl Astron Observ Japan, Nobeyama Solar Radio Observ, Minamimaki, Nagano 3841305, Japan
Recommended Citation
GB/T 7714
Su, Yingna,Golub, Leon,Van Ballegooijen, Adriaan,et al. Evolution of the sheared magnetic fields of two X-class flares observed by Hinode/XRT[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2007,59:S785-S791.
APA Su, Yingna.,Golub, Leon.,Van Ballegooijen, Adriaan.,Deluca, Edward E..,Reeves, Kathy K..,...&Shibasaki, Kiyoto.(2007).Evolution of the sheared magnetic fields of two X-class flares observed by Hinode/XRT.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,59,S785-S791.
MLA Su, Yingna,et al."Evolution of the sheared magnetic fields of two X-class flares observed by Hinode/XRT".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 59(2007):S785-S791.
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