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arXiv 1901.11482physics.space-phphysics.plasm-ph
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磁层Kelvin-Helmholtz不稳定性中的Turbulence驱动离子束

Turbulence-driven ion beams in the magnetospheric Kelvin-Helmholtz instability

Luca Sorriso-Valvo, Filomena Catapano, Alessandro Retinò, Olivier Le Contel, Denise Perrone, Owen W. Roberts, Jesse T. Coburn, Vincenzo Panebianco, Francesco Va… 展开作者

Luca Sorriso-Valvo, Filomena Catapano, Alessandro Retinò, Olivier Le Contel, Denise Perrone, Owen W. Roberts, Jesse T. Coburn, Vincenzo Panebianco, Francesco Valentini, Silvia Perri, Antonella Greco, Francesco Malara, Vincenzo Carbone, Pierluigi Veltri, Oreste Pezzi, Federico Fraternale, Francesca Di Mare, Raffaele Marino, Barbara Giles, Thomas E. Moore, Christopher T. Russell, Roy B. Torbert, Jim L. Burch, Yuri V. Khotyaintsev

摘要:

局部湍流能量传递的描述,和高分辨率的离子分布测量的磁层多尺度任务,一起提供了一个强大的工具,探索跨尺度的连接之间的流体尺度的能量级联和等离子体过程在亚离子尺度。当小尺度的能量传递由Alfvénic、关联速度和磁场涨落主导时,更有可能观察到加速粒子束。在这里,我们第一次报告的观察表明,非线性波-粒子相互作用的能量耗散在空间等离子体的一种可能的机制。

英文摘要:

The description of the local turbulent energy transfer, and the high-resolution ion distributions measured by the Magnetospheric Multiscale mission, together provide a formidable tool to explore the cross-scale connection between the fluid-scale energy cascade and plasma processes at sub-ion scales. When the small-scale energy transfer is dominated by Alfvénic, correlated velocity and magnetic field fluctuations, beams of accelerated particles are more likely observed. Here, for the first time we report observations suggesting the nonlinear wave-particle interaction as one possible mechanism for the energy dissipation in space plasmas.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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