论文标题
太阳活性区域中的快速冠状冠流
Fast Prograde Coronal Flows in Solar Active Regions
论文作者
论文摘要
我们报告了太阳活性区域中高速（> 100 km/s）水平流的发现和表征，利用在太阳能动力学观测值的夏娃（极端紫外变异性实验）提供的5-105 nm（极端紫外变异性实验）的5-105 nm（极端紫外变异性实验）。这些明显的流在天数的时间尺度上持续存在，例如，在Mg X，Si XII和FE XVI的线上很好地观察到。它们是繁殖的，正如蓝光/红移在孤立活跃区域的东/西肢通道上达到峰值所证明的那样。高速流动行为不取决于活动区域的纬度或太阳周期，在24和25循环中具有相似的行为。
We report the discovery and characterization of high-speed (>100 km/s) horizontal flows in solar active regions, making use of the Sun-as-a-star spectroscopy in the range 5-105 nm provided by the EVE (Extreme Ultraviolet Variability Experiment) spectrometers on the Solar Dynamics Observatory. These apparent flows are persistent on time scales of days, and are well observed in lines of Mg X, Si XII and Fe XVI for example. They are prograde, as evidenced directly by blueshifts/redshifts peaking at the east/west limb passages of isolated active regions. The high-speed flow behavior does not depend upon active-region latitude or solar cycle, with similar behavior in Cycles 24 and 25.
