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arXiv 1301.6052astro-ph.HEgr-qc
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状态方程在电阻相对论磁流体力学中的作用

The Role of the Equation of State in Resistive Relativistic Magnetohydrodynamics

Yosuke Mizuno

摘要:

我们已经研究了状态方程在电阻相对论磁流体力学中的作用,使用一个新开发的电阻相对论磁流体动力学代码。在一维和多维的数值试验进行了一些,以检查新的代码的鲁棒性和准确性。该代码通过了所有测试的情况下,涉及小和大的均匀电导率。介绍了与单组分理想相对论气体近似的物态方程。从选定的数值试验,使用不同的状态方程的结果进行了比较。主要结论是,状态方程的选择以及电导率的值可以导致相当大的动力学差异的模拟涉及冲击,不稳定性,和磁重联。

英文摘要:

We have investigated the role of the equation of state in resistive relativistic magnetohydrodynamics using a newly developed resistive relativistic magnetohydrodynamic code. A number of numerical tests in one-dimension and multi-dimensions are carried out in order to check the robustness and accuracy of the new code. The code passes all the tests in situations involving both small and large uniform conductivities. Equations of state which closely approximate the single-component perfect relativistic gas are introduced. Results from selected numerical tests using different equations of state are compared. The main conclusion is that the choice of the equation of state as well as the value of the electric conductivity can result in considerable dynamical differences in simulations involving shocks, instabilities, and magnetic reconnection.

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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