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Dynamical fast flow generation/acceleration in dense degenerate two-fluid plasmas of astrophysical objects
Astrophysics and Space Science ( IF 1.8 ) Pub Date : 2020-11-01 , DOI: 10.1007/s10509-020-03871-w
K. Kotorashvili , N. Revazashvili , N. L. Shatashvili

We have shown the generation/amplification of fast macro-scale plasma flows in the degenerate two-fluid astrophysical systems with initial turbulent (micro--scale) magnetic/velocity fields due to the Unified Reverse Dynamo/Dynamo mechanism. This process is simultaneous with and complementary to the micro-scale unified dynamo. It is found that the generation of macro--scale flows is an essential consequence of the magneto-fluid coupling; the generation of macro--scale fast flows and magnetic fields are simultaneous, they grow proportionately. The resulting dynamical flow acceleration is directly proportional to the initial turbulent magnetic (kinetic/magnetic) energy in degenerate e-i (degenerate e-p) astrophysical plasma; the process is very sensitive to both the degeneracy level of the system and the magneto-fluid coupling. In case of degenerate e-p plasma, for realistic physical parameters, there always exists such a real solution of dispersion relation for which the formation of strong macro-scale flow/outflow is guaranteed; the generated/accelerated locally super-Alfvenic flows are extremely fast with Alfven Mach number $> 10^3$ as observed in a variety of astrophysical outflows

中文翻译:

天体物理物体的致密简并二流体等离子体中的动态快速流动生成/加速

由于统一反向发电机/发电机机制,我们已经展示了在具有初始湍流(微尺度)磁/速度场的简并双流体天体物理系统中快速宏观尺度等离子体流的产生/放大。这个过程与微尺度统一发电机同步并互补。发现宏观流动的产生是磁流体耦合的一个重要结果;宏观快速流动和磁场的产生是同步的,它们成比例地增长。由此产生的动态流动加速度与简并 ei(简并 ep)天体物理等离子体中的初始湍流磁(动/磁)能成正比;该过程对系统的简并水平和磁流体耦合都非常敏感。在退化ep等离子体的情况下,对于现实的物理参数,总是存在这样一个色散关系的实解,保证形成强大的宏观尺度流动/流出;在各种天体物理流出中观察到的阿尔文马赫数 $> 10 ^ 3 $ 时,生成/加速的局部超阿尔芬尼流非常快
更新日期:2020-11-01
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