论文标题
部分可观测时空混沌系统的无模型预测
Application of Novel Interplanetary Scintillation Visualisations using LOFAR: A Case Study of Merged CMEs from September 2017
论文作者
论文摘要
星际闪烁的观察结果（IPS-由于太阳风的密度变化而引起的紧凑型无线电源的闪烁）使得可以确定太阳风的速度，并在整个地球层内估算了其大量密度。 A series of observations using the Low Frequency Array (LOFAR - a radio telescope centred on the Netherlands with stations across Europe) were undertaken using this technique to observe the passage of an ultra-fast CME which launched from the Sun following the X-class flare of 10 September 2017. LOFAR observed the strong radio source 3C147 at an elongation of 82 degrees from the Sun over a period of more than 30 hours and observed a在两个小时后，速度的强劲增长到900公里/秒，闪烁水平的强烈增加，被解释为密度的强烈增加。速度和密度在超过七个小时的时间内保持增强，超出了观察期。对这些数据的进一步分析表明，使用高级IPS技术仅适用于Lofar等独特的IPS技术，这证明了由于CME的通过而引起的磁场旋转的视图。
Observations of interplanetary scintillation (IPS - the scintillation of compact radio sources due to density variations in the solar wind) enable the velocity of the solar wind to be determined, and its bulk density to be estimated, throughout the inner heliosphere. A series of observations using the Low Frequency Array (LOFAR - a radio telescope centred on the Netherlands with stations across Europe) were undertaken using this technique to observe the passage of an ultra-fast CME which launched from the Sun following the X-class flare of 10 September 2017. LOFAR observed the strong radio source 3C147 at an elongation of 82 degrees from the Sun over a period of more than 30 hours and observed a strong increase in speed to 900km/s followed two hours later by a strong increase in the level of scintillation, interpreted as a strong increase in density. Both speed and density remained enhanced for a period of more than seven hours, to beyond the period of observation. Further analysis of these data demonstrates a view of magnetic-field rotation due to the passage of the CME, using advanced IPS techniques only available to a unique instrument such as LOFAR.
