MULTI-WAVELENGTH SPECTROSCOPIC OBSERVATION OF EXTREME-ULTRAVIOLET JET IN AR 10960
MULTI-WAVELENGTH SPECTROSCOPIC OBSERVATION OF EXTREME-ULTRAVIOLET JET IN AR 10960
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DOI：
10.1088/0004-637x/759/1/15
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发表时间：
2012-09
期刊：
影响因子：
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通讯作者：
Y. Matsui;T. Yokoyama;N. Kitagawa;S. Imada
中科院分区：
文献类型：
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作者：
Y. Matsui;T. Yokoyama;N. Kitagawa;S. Imada
我们研究了太阳能 EUV 射流的速度和温度之间的关系。 2007 年 6 月 5 日，高度加速的喷流发生在 NOAA 10960 活动区域。EIS/Hinode 的多波长光谱观测使我们能够研究宽温度范围内的多普勒速度。我们通过 STEREO 立体分析来分析射流的三维角度。利用这个角度和多普勒速度，我们得出了射流的真实速度。结果，我们发现He ii 256 Å log10Te[K] = 4.9观测到的冷射流被加速到220 km s−1左右，超过了色球蒸发的上限。其他线观测到的速度都低于色球蒸发的上限，而大多数热线的速度高于冷线的速度。我们解释说色球蒸发和磁加速同时发生。利用多仪器观测给出了基于重联模型的该事件的形态学解释。
We have studied the relationship between the velocity and temperature of a solar EUV jet. The highly accelerated jet occurred in the active region NOAA 10960 on 2007 June 5. Multi-wavelength spectral observations with EIS/Hinode allow us to investigate Doppler velocities at a wide temperature range. We analyzed the three-dimensional angle of the jet from stereoscopic analysis with STEREO. Using this angle and Doppler velocity, we derived the true velocity of the jet. As a result, we found that the cool jet observed with He ii 256 Å log10Te[K] = 4.9 is accelerated to around 220 km s−1, which is over the upper limit of the chromospheric evaporation. The velocities observed with the other lines are below the upper limit of the chromospheric evaporation, while most of the velocities of the hot lines are higher than those of cool lines. We interpret that the chromospheric evaporation and magnetic acceleration occur simultaneously. A morphological interpretation of this event based on the reconnection model is given by utilizing the multi-instrumental observations.