论文标题
相对论磁流失动力学的重力磁性不稳定性
Gravito-magnetic instabilities of Relativistic Magnetohydrodynamics
论文作者
论文摘要
我们研究具有相对论磁性水力学（MHD）的两种情况下具有对齐磁场的静态同质介质的重力 - 磁性不稳定性：首先，MHD，后Newtonian（PN）校正，第二，第二，特殊相对论（SR）MHD，具有弱层次。 PN MHD中的分析是在不采用时间表条件的情况下进行的，因此结果是衡量不变的。内部能量，压力，声速和Alfvén速度的PN校正降低了临界（牛仔裤）波长。 {所有相对论效应都倾向于破坏系统的稳定性。}尽管在存在重力的情况下，在谐波仪表中呈现了弱重力的SR MHD，但稳定性分析对牛顿秩序严格有效。在没有重力的情况下，SR MHD独立于仪表条件。在这两种情况下，我们介绍了平面波速度和稳定性标准。
We study gravito-magnetic instabilities of a static homogeneous medium with an aligned magnetic field in the two contexts of relativistic magnetohydrodynamics (MHD): first, MHD with post-Newtonian (PN) corrections, and second, special relativistic (SR) MHD with weak gravity. The analysis in the PN MHD is made without taking the temporal gauge condition, thus results are gauge-invariant. The PN corrections of the internal energy, pressure, sound velocity and the Alfvén velocity lower the critical (Jeans) wavelength. {All relativistic effects tend to destabilize the system.} Although the SR MHD with weak gravity is presented in the harmonic gauge, in the presence of gravity the stability analysis is strictly valid to Newtonian order. In the absence of gravity, the SR MHD is independent of the gauge condition. We present the plane wave velocities and the stability criteria in both cases.
