论文标题
基于远程仪器的无线电观察结果，关于Jovian DeTametric Radio排放源的统计研究
Statistical Study on the Sources of Jovian Decametric Radio Emissions Based on the Radio Observations of Remote Instruments
论文作者
论文摘要
为了更好地了解与Jovian Decametric（DAM）无线电排放相关的物理过程，我们介绍了基于Wind和Stereo Spacecraft的多视图观察的大坝和推断大坝来源的统计研究。从多个航天器得出的大坝的明显旋转速度的分布表明，与IO相关的大坝的旋转速度在0.15-0.6Ω_j范围内，非OIO-DAMS的旋转速度在0.7-1.2Ω_j介于0.7-1.2Ω_j之间。基于Wang等人的方法。 （2020），我们定位大坝的来源，并推断它们的发射角度和相关的电子能量。统计结果表明，大坝源位置具有三个优先区域，在南半球有两个区域，一个在北半球，这可能是由木星磁场的非对称拓扑引起的。 IO-DAM源足迹和IO极光斑点之间的差异随IO在经度的位置而变化，这与Hess等人的先前结果一致。 （2010年），Bonfond等。 （2017）和Hinton等。 （2019）。另外，非OIO-DAM的发射角度小于来自同一源区域的IO-DAM和所有发射角的发射角，范围从60°到85°。相应地，电子能量主要分布在0.5至20 KEV之间。
To better understand the physical processes associated with Jovian decametric (DAM) radio emissions, we present the statistical study of DAMs and inferred characteristics of DAM sources based on multi-view observation from Wind and STEREO spacecraft. The distribution of the apparent rotation speed of DAMs derived from multiple spacecraft suggests that the rotation speed of Io-related DAMs is in range of 0.15-0.6Ω_J and that of non-Io-DAMs is between 0.7-1.2Ω_J. Based on the method of Wang et al. (2020), we locate the sources of the DAMs and infer their emission angles and associated electron energies. The statistical results show that the DAM source locations have three preferred regions, two in the southern hemisphere and one in the northern hemisphere, which is probably caused by the non-symmetrical topology of Jupiter's magnetic field. The difference between Io-DAM source footprints and Io auroral spots changes with the Io's position in longitude, consistent with the previous results from Hess et al. (2010), Bonfond et al. (2017) and Hinton et al. (2019). In addition, the emission angles for non-Io-DAMs are smaller than that for Io-DAMs from the same source regions and all the emission angles range from 60° to 85°. Correspondingly, the electron energy is mainly distributed between 0.5 and 20 keV.
