The Martian magnetotail is largely controlled by the solar wind (SW) and is modulated by variations in the upstream drivers. However, due to the limitations of single-spacecraft observations, the effects of SW variations on the Martian magnetotail have not been fully understood so far. Here, using Tianwen-1 and MAVEN data, we report for the first time the rapid response of Martian magnetotail to the SW disturbance. In our study, Tianwen-1 detected the flapping of Martian magnetotail, while MAVEN monitored disturbances in the upstream SW. The results indicate that a 20% increase (or decrease) in SW dynamic pressure and a 30° (or 50°) rotation of interplanetary magnetic field clock angle could cause the Martian magnetotail to swing rapidly. These two SW disturbances could lead to oscillations of the Martian magnetotail. This study reveals the importance of joint observations for studying the interaction between the SW and Mars.

中文翻译：

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火星磁尾对太阳风扰动的快速响应——天问一号和MAVEN联合观测


火星磁尾在很大程度上受太阳风 （SW） 控制，并受上游驱动因素变化的调制。然而，由于单航天器观测的局限性，SW 变化对火星磁尾的影响到目前为止尚未完全了解。在这里，利用“天问一号”和“MAVEN”数据，我们首次报道了火星磁尾对 SW 干扰的快速响应。在我们的研究中，天问一号探测到火星磁尾的拍打，而 MAVEN 则监测上游西南的扰动。结果表明，SW 动压增加（或减少）20% 和行星际磁场时钟角度旋转 30°（或 50°）会导致火星磁尾快速摆动。这两个 SW 扰动可能导致火星磁尾振荡。这项研究揭示了联合观测对于研究西南和火星之间相互作用的重要性。