Institut für Theoretische Physik, Lehrstuhl IV: Weltraum- und Astrophysik, Ruhr-Universität Bochum, Germany.
Phys Rev Lett. 2011 Nov 11;107(20):201102. doi: 10.1103/PhysRevLett.107.201102.
The proton and electron temperature anisotropies in the solar wind are constrained by the instability thresholds for temperature-anisotropy-driven kinetic plasma instabilities. The modifications to the marginal instability conditions from accounting for the influence of damping connected with the collisional effects in the solar wind plasma are calculated for right- and left-handed polarized parallel propagating Alfvén waves and mirror and firehose fluctuations. These modifications provide tighter threshold constraints compared to the marginal thresholds but do not fully explain the observations at small values of the parallel plasma beta.
太阳风中的质子和电子温度各向异性受到温度各向异性驱动的动力学等离子体不稳定性的不稳定性阈值的限制。对于右手和左手极化的平行传播阿尔芬波以及镜像和火风雷动，计算了考虑到与太阳风等离子体中的碰撞效应相关的阻尼影响对边缘不稳定性条件的修正。与边缘阈值相比，这些修正提供了更严格的阈值限制，但不能完全解释在平行等离子体β值较小时的观测结果。
