论文标题
事件地平线望远镜时代，有源银河核等离子体等离子体的普通通用磁流失动力学方程
Generalized general-relativistic magnetohydrodynamic equations for plasmas of active galactic nuclei in the era of the Event Horizon Telescope
论文作者
论文摘要
广义的一般性依赖性水力动力学（广义GRMHD）方程已用于研究特定的相对论 - 平原现象，例如相对论磁重新连接或通过非理想MHD效应修饰的波传播。但是，在这些方程式中尚未确定，在广义欧姆定律中的“ theta”术语表达了两种构成等离子体的流体之间的能量交换。在本文中，我们根据广义相对论欧姆法律本身确定“ theta”术语。这提供了广义GRMHD方程的关闭，从而产生了相对论等离子体方程的封闭系统。根据该方程式，我们揭示了非理想MHD现象的特征量表，并阐明了理想GRMHD方程的适用条件。我们使用事件地平线望远镜观测数据评估了M87*等离子体中非理想MHD现象的特征量表。
The generalized general-relativisticmagnetohydrodynamic (generalized GRMHD) equations have been used to study specific relativistic-plasmas phenomena, such as relativistic magnetic reconnection or wave propagation modified by non-ideal MHD effects. However, the "Theta" term in the generalized Ohm law, which expresses the energy exchange between two fluids composing a plasma, has yet to be determined in these equations. In this paper, we determine the "Theta" term based on the generalized relativistic Ohm law itself. This provides closure of the generalized GRMHD equations, yielding a closed system of the equations of relativistic plasma. According to this system of equations, we reveal the characteristic scales of non-ideal MHD phenomena and clarify the applicable condition of the ideal GRMHD equations. We evaluate the characteristic scales of the non-ideal MHD phenomena in the M87* plasma using the Event Horizon Telescope observational data.
