Chaston C C, Phan T D, Bonnell J W, Mozer F S, Acuńa M, Goldstein M L, Balogh A, Andre M, Reme H, Fazakerley A
Space Science Laboratory, University of California, Berkeley, California 94720, USA.
Phys Rev Lett. 2005 Aug 5;95(6):065002. doi: 10.1103/PhysRevLett.95.065002. Epub 2005 Aug 4.
We identify drift-kinetic Alfvén waves in the vicinity of a reconnection X line on the Earth's magnetopause. The dispersive properties of these waves have been determined using wavelet interferometric techniques applied to multipoint observations from the Cluster spacecraft. Comparison of the observed wave dispersion with that expected for drift-kinetic Alfvén waves shows close agreement. The waves propagate outwards from the X line suggesting that reconnection is a kinetic Alfvén wave source. Energetic O+ ions observed in these waves indicate that reconnection is a driver of auroral ion outflow.
我们在地球磁层顶的重联X线附近识别出漂移动力学阿尔文波。利用应用于“星簇”号航天器多点观测的小波干涉技术确定了这些波的色散特性。将观测到的波色散与漂移动力学阿尔文波预期的色散进行比较，结果显示吻合度很高。这些波从X线向外传播，这表明重联是动力学阿尔文波的一个源。在这些波中观测到的高能O+离子表明重联是极光离子外流的一个驱动因素。
