Abstract—

Coronal mass ejections from active regions on the Sun can be observed as series of individual events separated in time in the inner solar wind and near-Earth plasma. To find such events we have analyzed experimental data of dual-frequency solar wind radio sounding by the Rosetta and Mars Express spacecraft. The cycles of experiments performed in 2010 and 2011 measured the frequency fluctuations of X- and S-band signals. The temporal variations in the level of frequency fluctuations measured in the inner solar wind have been compared with the time variations in average plasma parameters recorded near Earth’s orbit. Since radio-sounding cycles were sufficiently long, we have managed to record events where significant amplifications of frequency fluctuations in the inner solar wind and increases in the plasma concentration near Earth’s orbit are associated with flare processes in the same active region on the Sun. Here, the amplifications of frequency fluctuations on the east limb occur earlier than near Earth’s orbit, and those on the west limb occur later. The time shift for the west limb turns out to be less than for the east limb. The sign of the time shift and the ratios between its numerical values depend on active region displacement relative to the central meridian due to the rotation of the Sun.

中文翻译：

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太阳内部风和近地轨道中的扰动流

摘要-

可以观察到太阳活动区域上的日冕物质抛射，这些事件是在太阳内部风和近地等离子中随时间分开的一系列独立事件。为了发现此类事件，我们分析了罗塞塔号和火星快车的双频太阳风无线电探测的实验数据。在2010年和2011年进行的实验周期中，测量了X和S的频率波动带信号。已将内部太阳风中测得的频率波动水平的时间变化与记录在地球轨道附近的平均等离子体参数的时间变化进行了比较。由于无线电探测周期足够长，因此我们设法记录了一些事件，这些事件中，太阳内部风中频率波动的显着放大以及地球轨道附近等离子体浓度的增加与太阳在同一活跃区域中的耀斑过程有关。在这里，东边的频率波动的放大比地球轨道附近发生的早，而西边的频率波动的发生则晚。事实证明，西边的时间偏移小于东边的时间偏移。