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PMO OpenIR  > 太阳活动的多波段观测研究团组  > 期刊论文
题名: OBSERVATIONAL EVIDENCE OF ELECTRON-DRIVEN EVAPORATION IN TWO SOLAR FLARES
作者: Li, D.1, 2; Ning, Z. J.1; Zhang, Q. M.1
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2015-11-01
卷号: 813, 期号:1
关键词: line: profiles ; Sun: flares ; Sun: UV radiation ; Sun: X-rays, gamma rays ; techniques: spectroscopic
DOI: 10.1088/0004-637X/813/1/59
文章类型: Article
英文摘要: We have explored the relationship between hard X-ray (HXR) emissions and Doppler velocities caused by the chromospheric evaporation in two X1.6 class solar flares on 2014 September 10 and October 22, respectively. Both events display double ribbons and the Interface Region Imaging Spectrograph slit is fixed on one of their ribbons from the flare onset. The explosive evaporations are detected in these two flares. The coronal line of Fe XXI 1354.09 angstrom shows blueshifts, but the chromospheric line of C I 1354.29 angstrom shows redshifts during the impulsive phase. The chromospheric evaporation tends to appear at the front of the flare ribbon. Both Fe XXI and C I display their Doppler velocities with an "increase-peak-decrease" pattern that is well related to the "rising-maximum-decay" phase of HXR emissions. Such anti-correlation between HXR emissions and Fe XXI Doppler shifts and correlation with C I Doppler shifts indicate the electron-driven evaporation in these two flares.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: REGION-IMAGING-SPECTROGRAPH ; HARD X-RAY ; GENTLE CHROMOSPHERIC EVAPORATION ; LOOP RADIATIVE HYDRODYNAMICS ; GENERAL SPECTRAL PROPERTIES ; MAGNETIC RECONNECTION ; IMPULSIVE PHASE ; MULTIWAVELENGTH OBSERVATIONS ; RESOLUTION OBSERVATIONS ; NONTHERMAL ELECTRONS
收录类别: SCI
项目资助者: Norwegian Space Center (NSC, Norway) through an ESA PRODEX contract ; NSFC(11203083 ; 973 program(2011CB811400 ; (2010DP173032) ; 11333009 ; 2014CB744200) ; 11303101 ; 11473071 ; 11573072)
语种: 英语
WOS记录号: WOS:000365284100059
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16052
Appears in Collections:太阳活动的多波段观测研究团组_期刊论文

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作者单位: 1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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