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Probing Jovian Broadband Kilometric Radio Sources Tied to the Ultraviolet Main Auroral Oval With Juno

机译:用Juno探测与紫外线主极椭圆相连的Jovian宽带千公里无线电源

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摘要

Observations of Jovian broadband kilometric (bKOM) radiation and ultraviolet (UV) auroras were acquired with the Waves and Juno‐UVS instruments for ∼2 hr over the northern and southern polar regions during Juno's perijoves 4, 5, and 6 passes (PJ4, PJ5, and PJ6). During all six time periods, Juno traversed auroral magnetic field lines connecting to the UV main auroral ovals, matching the estimates of bKOM radio source footprints. The localized bKOM radio sources for the PJ4 north pass map to magnetic field lines having distances of 10 to 12 Jovian radii (R J) at the magnetic equator, whereas the extended bKOM radio sources for the other events map to field lines extending to 20–61 R J. We found the peak bKOM intensities during Juno's potential radio source crossings show positive, negative, and no correlations with the UV main oval brightness and color ratio. Only the positive correlations suggest wave‐particle energy transport.
机译:在Waves和Juno-UVS仪器在朱诺周周四,五,六次通过期间,波和Juno-UVS仪器在北极和南极地区获得了约2个小时的木星宽公里(bKOM)辐射和紫外线(UV)极光观测值(PJ4,PJ5和PJ6)。在所有六个时间段内,Juno遍历了连接到UV主极光椭圆的极光磁场线,与bKOM无线电源足迹的估计值相匹配。 PJ4北向通过的局部bKOM无线电源映射到磁赤道处距离10至12 Jovian半径(RJ)的磁场线,而其他事件的扩展bKOM无线电源映射到延伸至20-61的磁场线RJ。我们发现在Juno潜在的无线电源穿越过程中,峰值bKOM强度显示为正,负,并且与UV主椭圆的亮度和颜色比率没有相关性。只有正相关表明波粒能量传输。

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