HEATING AND DYNAMICS OF TWO FLARE LOOP SYSTEMS OBSERVED BY AIA AND EIS
HEATING AND DYNAMICS OF TWO FLARE LOOP SYSTEMS OBSERVED BY AIA AND EIS
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AIA 和 EIS 观测到的两个火炬环路系统的加热和动力学
DOI：
10.1088/0004-637x/781/2/120
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发表时间：
2013-12
期刊：
影响因子：
--
通讯作者：
M. D. Ding
中科院分区：
文献类型：
--
作者：
Y. Li, J. Qiu,;M. D. Ding
我们研究了2011年2月13日C4.7双带耀斑的加热和演变。从太阳动力学观测站/大气成像组件（AIA）的成像观测中，我们可以识别出两组环。Hinode/EUV成像光谱仪（EIS）的光谱观测揭示了两组环路底部的蓝移。这两组的演变和动态是完全不同的。第一组环表现出大约25分钟的蓝移，然后是红移，而第二组环表现出更强的蓝移，持续大约一个小时。AIA的紫外线1600观测也显示第二组环的底部亮了两次。这表明在第二组循环中可能存在连续加热。我们使用空间分辨的紫外线曲线来推断由两个循环系统组成的几十个单独循环的加热速率。有了这些加热速率，我们然后用“基于焓的循环热演化”模型计算这些循环中的等离子体演化。结果表明，对于第一组环路，模型合成的EUV光曲线与6个AIA通道和8条EIS光谱线的观测光曲线比较吻合，计算的平均焓流速度也与EIS的多普勒频移测量值吻合。对于二次加热模拟的第二组环，在低温波段，模拟的EUV光曲线与观测到的EUV光曲线存在一定差异，模型不能完全产生观测到的延长蓝移特征。我们讨论造成差异的可能原因。
We investigate heating and evolution of flare loops in a C4.7 two-ribbon flare on 2011 February 13. From Solar Dynamics Observatory/Atmospheric Imaging Assembly (AIA) imaging observations, we can identify two sets of loops. Hinode/EUV Imaging Spectrometer (EIS) spectroscopic observations reveal blueshifts at the feet of both sets of loops. The evolution and dynamics of the two sets are quite different. The first set of loops exhibits blueshifts for about 25 minutes followed by redshifts, while the second set shows stronger blueshifts, which are maintained for about one hour. The UV 1600 observation by AIA also shows that the feet of the second set of loops brighten twice. These suggest that continuous heating may be present in the second set of loops. We use spatially resolved UV light curves to infer heating rates in the few tens of individual loops comprising the two loop systems. With these heating rates, we then compute plasma evolution in these loops with the “enthalpy-based thermal evolution of loops” model. The results show that, for the first set of loops, the synthetic EUV light curves from the model compare favorably with the observed light curves in six AIA channels and eight EIS spectral lines, and the computed mean enthalpy flow velocities also agree with the Doppler shift measurements by EIS. For the second set of loops modeled with twice-heating, there are some discrepancies between modeled and observed EUV light curves in low-temperature bands, and the model does not fully produce the prolonged blueshift signatures as observed. We discuss possible causes for the discrepancies.
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DOI：
10.1086/163264
发表时间：
1985-06
期刊：
The Astrophysical Journal
影响因子：
--
作者：
P. Bornmann
通讯作者：
P. Bornmann
太阳耀斑早期上升阶段传导驱动蒸发的观测
影响因子：
6.5
作者：
Battaglia M
通讯作者：
Battaglia M
DOI：
10.1088/0004-637x/733/1/59
发表时间：
2011-05
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Fana M. Mulu-Moore;A. Winebarger;H. Warren;M. Aschwanden
通讯作者：
Fana M. Mulu-Moore;A. Winebarger;H. Warren;M. Aschwanden
DOI：
10.1086/160786
发表时间：
1983-03
期刊：
The Astrophysical Journal
影响因子：
--
作者：
P. Cargill;E. Priest
通讯作者：
P. Cargill;E. Priest
DOI：
10.1086/162749
发表时间：
1984-12
期刊：
The Astrophysical Journal
影响因子：
--
作者：
E. Antonucci;A. Gabriel;B. Dennis
通讯作者：
E. Antonucci;A. Gabriel;B. Dennis