Magnetic inhibition of the recollimation instability in relativistic jets

Magnetic inhibition of the recollimation instability in relativistic jets
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相对论射流重准直不稳定性的磁抑制

DOI:
10.1093/mnras/stab828
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发表时间:
2021
影响因子:
4.8
通讯作者:
Gourgouliatos Konstantinos N
Gourgouliatos Konstantinos N
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Matsumoto Jin;Komissarov Serguei S;Gourgouliatos Konstantinos N

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在本文中,我们描述了三维相对论磁流体动力学模拟的结果,旨在探讨规则磁场对相对论射流重准直所伴随的不稳定性发展的作用。特别是,我们研究了由星系日冕的热压力重新约束来自活动星系核(AGN)的喷流所驱动的重准化。我们发现相对较弱的方位磁场可以完全抑制此类射流的重准直不稳定性,其临界磁化参数σcr < 0.01。我们认为重准不稳定性是离心不稳定性 (CFI) 的一种变体,并表明我们的结果与基于旋转流体中磁 CFI 研究的预测一致。这些结果一般在活动星系核喷流的背景下进行讨论,特别是河外射电源的法纳罗夫-赖利形态划分的性质。
In this paper, we describe the results of three-dimensional relativistic magnetohydrodynamic simulations aimed at probing the role of regular magnetic field on the development of the instability that accompanies recollimation of relativistic jets. In particular, we studied the recollimation driven by the reconfinement of jets from active galactic nuclei (AGN) by the thermal pressure of galactic coronas. We find that a relatively weak azimuthal magnetic field can completely suppress the recollimation instability in such jets, with the critical magnetization parameterσcr< 0.01. We argue that the recollimation instability is a variant of the centrifugal instability (CFI) and show that our results are consistent with the predictions based on the study of magnetic CFI in rotating fluids. The results are discussed in the context of AGN jets in general and the nature of the Fanaroff–Riley morphological division of extragalactic radio sources in particular.
相对论离心不稳定性
DOI: --
发表时间: 2017
期刊:
影响因子: --
作者:
K. Gourgouliatos;S. Komissarov
通讯作者: S. Komissarov
DOI: --
发表时间: 2019
期刊:
影响因子: --
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E. Perlman;M. Birkinshaw;M. Kadler;S. Komissarov;M. Lister;D. Meier;E. Meyer;M. Nakamura;K. Nyland;C. Odea;D. Worrall;A. Zdziarski
通讯作者: A. Zdziarski
DOI: --
发表时间: 2019
影响因子: 4.8
作者:
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通讯作者: J. Matsumoto
宇宙喷流的因果关系和稳定性
DOI: 10.1093/mnras/stv1295
发表时间: 2014
影响因子: 4.8
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相对论性射流形成的三维结构
DOI: 10.1093/mnras/sts519
发表时间: 2012
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作者:
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通讯作者: O. Porth