电子-离子-光子气体吸积盘喷流形成模型

IF 10.2 4区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
E. Katsadze , N. Revazashvili , N.L. Shatashvili
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引用次数: 0

摘要

本文采用 Shatashvili 和 Yoshida(2011 年);Arshilava 等(2019 年)的贝尔特拉米-伯努利平衡方法,研究了相对论吸积盘通过建立相对论盘-强喷流平衡结构形成天体物理喷流的问题。吸积盘是弱磁化的,由完全电离的相对论电子-离子等离子体和因汤普森散射而与电子强耦合的光子气体组成。分析基于广义的沙库拉-苏尼亚耶夫 α 湍流耗散模型,该模型考虑了光子气体和离子气体对局部粘度(吸积的主要来源)的贡献。在忽略盘中自引力的情况下,我们构建了无引力条件下中心紧凑天体引力场中平衡相对论盘-喷流结构特征参数的解析自相似解。结果表明,喷流中的磁场能量比吸积盘的磁场能量大几个数量级,而喷流出流在喷流轴附近的局部等离子体-beta <1是超阿尔费尼科的。推导出的解决方案可用于分析恒星形成过程中在双星系统中观测到的天体物理喷流,将喷流特性与电子-离子-光子气体相对论吸积盘的参数联系起来。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Jet formation model from accretion disks of electron-ion-photon gas

The problem of Astrophysical Jet formation from relativistic accretion disks through the establishment of relativistic disk-powerful jet equilibrium structure is studied applying the Beltrami-Bernoulli equilibrium approach of Shatashvili and Yoshida 2011; Arshilava et al. 2019. Accretion disk is weakly magnetized consisting of fully ionized relativistic electron-ion plasma and photon gas strongly coupled to electrons due to Thompson Scattering. Analysis is based on the generalized Shakura-Sunyaev α-turbulent dissipation model for local viscosity (being the main source of accretion), in which the contributions from both the photon and ion gases are taken into account. Ignoring the self-gravitation in the disk we constructed the analytical self-similar solutions for the equilibrium relativistic disk-jet structure characteristic parameters in the field of gravitating central compact object for the force-free condition. It is shown, that the magnetic field energy in the Jet is several orders greater compared to that of accretion disk, while jet-outflow is locally Super-Alfvénic with local Plasma-beta <1 near the jet-axis. The derived solutions can be used to analyze the astrophysical jets observed in binary systems during the star formation process linking the jet properties with the parameters of relativistic accretion disks of electron-ion-photon gas.

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来源期刊
Journal of High Energy Astrophysics
Journal of High Energy Astrophysics Earth and Planetary Sciences-Space and Planetary Science
CiteScore
9.70
自引率
5.30%
发文量
38
审稿时长
65 days
期刊介绍: The journal welcomes manuscripts on theoretical models, simulations, and observations of highly energetic astrophysical objects both in our Galaxy and beyond. Among those, black holes at all scales, neutron stars, pulsars and their nebula, binaries, novae and supernovae, their remnants, active galaxies, and clusters are just a few examples. The journal will consider research across the whole electromagnetic spectrum, as well as research using various messengers, such as gravitational waves or neutrinos. Effects of high-energy phenomena on cosmology and star-formation, results from dedicated surveys expanding the knowledge of extreme environments, and astrophysical implications of dark matter are also welcomed topics.
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