非旋转热传导黑洞周围磁化耗散吸积流的整体跨音速解

IF 1.9 4区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

New Astronomy Pub Date : 2024-12-17 DOI:10.1016/j.newast.2024.102348

Sakine Rezaie , Maryam Ghasemnezhad, Mojtaba Golshani

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引用次数: 0

摘要

我们的目标是获得非旋转黑洞周围磁化耗散吸积流的一组全局跨音速吸积解。为了达到这个目的，我们考虑了一个稳定的、轴对称的、以粘性平流为主的吸积盘。此外，我们还研究了热传导和轫致冷却对热吸积流的影响。我们还研究了在它们存在的情况下流动的动力变量的性质。我们发现通过改变热传导参数和冷却因子可以改变跨声速溶液的性质。我们已经确定了提供全球吸积解决方案的热传导和冷却参数的临界值。此外，我们在我们的模型中估计了盘的光度，并将其应用于Sgr A *

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Global Transonic Solution of magnetized dissipative accretion flow around non-rotating black holes with thermal conduction

Our goal is to obtain a set of global transonic accretion solutions for magnetized dissipative accretion flows around non-rotating black holes. To achieve this, we have considered a steady state, axisymmetric, and viscous advection-dominated accretion disc. Additionally, we have investigated the effects of thermal conduction and bremsstrahlung cooling on hot accretion flow. We also have examined the properties of the dynamical variables of the flow in their presence. We have found that the nature of transonic solutions is modified by changing the thermal conduction parameter and cooling factor. We have determined the critical values of the thermal conduction and cooling parameters that provide the global accretion solutions. Furthermore, we have estimated the disc’s luminosity in our model and have applied it to Sgr A

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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.