Modulation Lanes in the Dynamic Spectra of Jovian L Bursts
Modulation Lanes in the Dynamic Spectra of Jovian L Bursts
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木星 L 爆发动态光谱中的调制通道
DOI：
10.1029/ja081i016p02917
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发表时间：
1970
影响因子：
--
通讯作者：
J. J. Riihimaa
中科院分区：
文献类型：
--
作者：
J. J. Riihimaa
木星的主磁场是由先驱者11号上的戈达德太空飞行中心磁通门磁力计测量的，对数据的分析产生了一个比先驱者10号结果更详细的模型。在球谐八极表示中，偶极项（与地球极性相反）在倾角为9.6°和系统III经度为232°时的星等为4.28 GRj³。四极矩和八极矩是显著的，分别为偶极子的24%和21%。这导致行星磁场在<3Rj的距离处与简单的偏移偶极拓扑结构的显著偏差。北极磁场强度为14 G，在北方半球，木卫一相关通量管的“足迹”横穿磁极区域。由于场的复杂性，预计辐射带中的关联Lshell分裂、带电粒子赤道面的翘曲以及由于卫星Amalthea和Io而增强的吸收效应。
The main magnetic field of Jupiter has been measured by the Goddard Space Flight Center flux gate magnetometer on Pioneer 11, and analysis of the data yields a more detailed model than that obtained from Pioneer 10 results. In a spherical harmonic octupole representation the dipole term (with opposite polarity to earth's) has a magnitude of 4.28 GRj³ at a tilt angle of 9.6° and a system III longitude of 232°. The quadrupole and octupole moments are significant, 24% and 21% of the dipole, respectively. This leads to a significant deviation of the planetary magnetic field from a simple offset dipole topology at distances of <3Rj. The north polar field strength is 14 G, and in the northern hemisphere the ‘footprint’ of the Io associated flux tube traverses the magnetic polar region. AssociatedLshell splitting in the radiation belts, warping of the charged particle equatorial planes, and enhanced absorption effects due to the satellites Amalthea and Io are expected as a result of the field complexity.