活动星系核发出的均匀星际介质内相对论射流传播的数值研究

IF 2.1 4区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

New Astronomy Pub Date : 2025-09-20 DOI:10.1016/j.newast.2025.102467

Ribhu Pal, Arnab Roy

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引用次数: 0

摘要

利用PLUTO求解器（Mignone et al., 2007）求解相对论磁流体动力学（RMHD）方程，对二维轴对称相对论射流在均匀星际介质中的传播进行了直接数值模拟（DNS）。此外，在整个研究中，还提供了有关这种传播的详细流动特征的全面讨论。本文对相对论性射流在均匀星际介质中传播过程中激波涡度相互作用的物理现象进行了全面的描述。此外，熵（御御）的概率密度分布（p.d.f）表明，最高强度的流体旋转和湍流出现在茧内，而不是在相对论性射流的锋面区域。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Numerical study of relativistic jet propagation inside uniform interstellar medium issuing from an Active Galactic Nuclei

A direct numerical simulation (DNS) of two-dimensional axisymmetric relativistic jet propagation through a uniform interstellar medium was carried out by solving the relativistic magnetohydrodynamic (RMHD) equations with the PLUTO solver (Mignone et al., 2007). Moreover, a comprehensive discussion of the detailed flow features involved in this propagation is provided throughout this study. The physics underlying shock-vorticity interaction during relativistic jet propagation through a uniform interstellar medium has been thoroughly described in this present study. Additionally, the probability density distribution (p.d.f) of enstrophy (

ϵ

) indicates that the highest intensity of fluid rotation, and consequently turbulence, is manifested within the cocoon instead of the frontal region of the relativistic jet.

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来源期刊

New Astronomy 地学天文-天文与天体物理

CiteScore

4.00

自引率

10.00%

发文量

109

审稿时长

13.6 weeks

期刊介绍： New Astronomy publishes articles in all fields of astronomy and astrophysics, with a particular focus on computational astronomy: mathematical and astronomy techniques and methodology, simulations, modelling and numerical results and computational techniques in instrumentation. New Astronomy includes full length research articles and review articles. The journal covers solar, stellar, galactic and extragalactic astronomy and astrophysics. It reports on original research in all wavelength bands, ranging from radio to gamma-ray.