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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Relation between optical emissions, particles, electric fields, and Alfven waves in a multiple rayed arc
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Relation between optical emissions, particles, electric fields, and Alfven waves in a multiple rayed arc

机译：多射线弧中的光发射，粒子，电场和Alfven波之间的关系

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Velocities of rays in auroral arcs were used to infer the perpendicular electric fields above the acceleration region. Using rocket measurements of electron energy as a proxy for the high-altitude potential, the high-altitude perpendicular electric fields were calculated and found to be in good agreement with those derived from the ray motions. Additionally, a 0.6 Hz oscillating electric field at high altitude was postulated on the basis of the passing rays. Such a field was also calculated from the electron energy measurements and was found to be closely related to an Alfven wave measured on the payload following a delay of 0.8 s. The measured electron energy flux agreed well with the auroral luminosity down to scale sizes of about 10 km. The combination of ground-based imaging acid the measured energy flux also allowed a determination of the lower border altitude of the arcs. They were found to be somewhat higher (130 km) than expected on the basis of the electron energy. A tall rayed are with a lower border height of 170 km was associated with a burst of suprathermal electrons on the poleward edge of the aurora. [References: 11]
机译：极光弧中的射线速度用于推断加速区域上方的垂直电场。使用火箭对电子能量的测量作为高空势的替代物，计算出了高空垂直电场，发现该电场与从射线运动推导出的电场高度吻合。另外，根据通过的射线，假定在高空有0.6Hz的振荡电场。还根据电子能量测量结果计算出了该场，发现该场与在0.8 s的延迟后对有效载荷测得的Alfven波密切相关。测得的电子能量通量与极光的亮度（约10 km的尺度）吻合得很好。地面成像酸与测得的能量通量的结合还可以确定电弧的下边界高度。根据电子能量，发现它们比预期的要高一些（130 km）。下边界高度为170 km的高射线辐射与极光极向边缘上的超热电子爆发有关。 [参考：11]

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