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arXiv 0810.0108astro-ph
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微类星体的全球能量模型(GEMM):一个丰富一致的盘+喷流解

A Global Energetic Model for Microquasars (GEMM): A rich and consistent disk+jet solution

C. Foellmi, P. -O. Petrucci, J. Ferreira, G. Henri

摘要:

基于一个动力学模型,描述如何从磁化盘发射稳定的,强大的和自准直的喷流,我们建立了一致的磁盘+喷流微类星体图片。我们的磁盘是一种新型的磁盘解决方案,称为喷射盘(JED),其特性直接受到射流的存在。我们假设只有热粒子的单温度等离子体。通过求解盘的辐射平衡,我们得到三个分支的解决方案,热和冷的(都是热稳定的),和一个中间的,热不稳定的。热的解决方案具有全球观察到的特点,通常被称为“日冕”位于内部磁盘区域。我们提出了这个新的磁盘解决方案,以及如何计算的辐射平衡。我们讨论的解决方案的丰富性,并显示该模型的能力,以再现所观察到的光谱能量分布的XTE J1118+480与合理的参数。最后,我们概述了模型的一些观点。

英文摘要:

Based on a dynamical model describing how stationary, powerful and self-collimated jets are being launched from a magnetized disk, we build a consistent disk+jet microquasar picture. Our disk is a new type of disk solution called the Jet Emitting Disk (JED), and whose characteristics are directly constrained by the presence of a jet. We assume a one-temperature plasma with thermal particles only. By solving the radiative equilibrium of the disk, we obtain three branches of solutions, a hot and a cold ones (both thermally stable), and an intermediate one, thermally unstable. The hot solution possess the global observed characteristics of what has been often called a "corona" located above the inner disk region. We present this new disk solution, and how the radiative equilibrium is computed. We discuss the richness of the solution, and show the ability of the model to reproduce an observed spectral energy distribution of XTE J1118+480 with reasonable parameters. We finally outline some perspectives of the model.

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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