Abstract

A distinctive feature of the Jovian magnetosphere is a powerful disklike current system—the current disk. There are several models of the magnetic field of this current system. In this paper, we improved the piecewise current disc (PCD) disk model that we constructed earlier [1]. It has been adapted for analytical calculation. The shape of the current sheet surface was modified, which led to a decrease in the root-mean-square deviation of the model from magnetometer data. The model parameters were optimized to improve the accordance with data from Juno and Galileo spacecrafts. The PCD model yielded, on average, a 30% smaller root-mean-square deviation from observations for Juno data and 10% for Galileo data compared with the currently most popular Jupiter current disk model [2], the parameters of which were also optimized for each spacecraft trajectory.

中文翻译：

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针对朱诺和伽利略磁场数据优化的木星电流盘模型

摘要

木星磁层的一个显着特征是一个强大的盘状电流系统——电流盘。当前系统的磁场有多种模型。在本文中，我们改进了之前构建的分段电流盘 (PCD) 盘模型 [1]。它已适用于分析计算。当前片材表面的形状被修改，这导致模型与磁力计数据的均方根偏差减小。优化模型参数以提高与朱诺和伽利略航天器数据的一致性。平均而言，PCD 模型产生的均方根偏差与Juno数据的观测值偏差小 30 %，Galileo数据偏差小10% 数据与目前最流行的木星电流盘模型[2]相比，其参数也针对每个航天器轨迹进行了优化。