木卫二和木卫三周围的尘埃模型
Models of dust around Europa and Ganymede
摘要：
我们使用数值模型，我们的实验室数据的支持下，预测尘埃密度的喷出物外流在任何高度内的木卫二和木卫三的希尔球体。喷出物是由微流星体轰击产生的，五种不同的尘埃种群被调查为卫星周围尘埃的来源。撞击尘埃通量（流入）导致一定量的表面物质（流出）喷射。外流物填充了卫星周围的空间，其中一部分喷出物逃逸，其余的落回表面。这些模型进行了验证，对现有的伽利略DDS（尘埃探测器系统）在木卫二和木卫三飞越收集的数据。还包括输入参数及其对模型结果的影响。该模型的结果对于未来的木卫二和木卫三任务非常重要，例如JUICE（Jupiter ICy月球探测器），最近被选为欧空局将于2022年发射的下一个大型太空任务。
英文摘要：
We use numerical models, supported by our laboratory data, to predict the dust densities of ejecta outflux at any altitude within the Hill spheres of Europa and Ganymede. The ejecta are created by micrometeoroid bombardment and five different dust populations are investigated as sources of dust around the moons. The impacting dust flux (influx) causes the ejection of a certain amount of surface material (outflux). The outflux populates the space around the moons, where a part of the ejecta escapes and the rest falls back to the surface. These models were validated against existing Galileo DDS (Dust Detector System) data collected during Europa and Ganymede flybys. Uncertainties of the input parameters and their effects on the model outcome are also included. The results of this model are important for future missions to Europa and Ganymede, such as JUICE (JUpiter ICy moon Explorer), recently selected as ESA's next large space mission to be launched in 2022.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
