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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Ordering of injection events within Saturnian SLS longitude and local time
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Ordering of injection events within Saturnian SLS longitude and local time

机译：在土星的SLS注入事件的顺序经度和当地时间

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Periodicities similar to the Saturn kilometric radio (SKR) emissions have been observed throughout the magnetosphere in both the magnetic field and the plasma. An outstanding question is what mechanism links these periodicities between the inner and outer magnetospheres. It had been postulated that the interchange instability, where narrow injections return the magnetic flux carried by the bulk plasma outflow, could play a role in determining the periodicities, but early analysis found no ordering of the injection events in the SKR-derived Saturnian longitude system (SLS). In this study, we reexamine this possibility by limiting our data set to the young injection events observed by the Cassini radio and plasma wave science instrument. We find that the young injection events observed near midnight local time are strongly ordered by SLS. Further, this ordering varies with the Saturnian season. Pre-equinox, the northern hemisphere's longitude system controls the event occurrence. Post-equinox, the events are ordered by the southern hemisphere-derived longitude system. We suggest that this may be an effect in the variations in ionospheric conductivity or due to change in the magnetosphere's orientation relative to the solar wind.
机译：周期的研究类似于土星公里的无线电(SKR)排放曾被观察到整个磁气圈的磁场场和等离子体。什么机制之间的链接这些周期的研究内外不但。假定交换不稳定性,狭窄的注射返回磁通在哪里由等离子体流出,可以发挥角色在决定周期的研究,但早期分析没有发现订购的注入事件SKR-derived土星的经度系统(SLS)。年轻人可能通过限制我们的数据集由卡西尼号电台注入事件观察和等离子体波科学仪器。年轻人注入事件观察到近午夜当地时间由SLS强烈要求。这种排序随土星的季节。Pre-equinox,北半球的经度系统控制事件发生。Post-equinox,事件是有序的南部hemisphere-derived经度系统。在表明这可能是一个影响电离层电导率的变化或由于磁气圈的变化方向相对于太阳风。

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