A model of high-energy emission from jets of microquasars of Population III

P. S. Checa, G. Romero
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引用次数: 1

Abstract

Current research indicates that the radiation of the first stars alone would not have been suficient to ionize the intergalactic medium on long distances because of the high columnar density of the clouds in which they formed. It becomes necessary, then, to explore other alternatives for the reionization. The study of the contribution of the first accreting binary systems to the reionization and heating of the intergalactic medium requires the formulation of a concrete model for the first microquasars. We aim at constructing a consistent model for jets of microquasars where the donor star is of Population III. We calculate the spectral energy distribution of the radiation produced by the relativistic particles in the jets, within the framework of a lepto-hadronic model. In addition, we study the interaction between the jets and the early intergalactic medium. All calculations have been computed for a cosmological redshift value z = 10. We determine that jets of microquasars of Population III are sources of intense gamma radiation in regions of particle acceleration near the compact object and in the terminal jets.
星族III微类星体射流高能发射的模型
目前的研究表明,第一批恒星的辐射本身不足以在远距离上电离星系间介质,因为它们形成的云的柱状密度很高。因此,有必要探索再电离的其他替代方法。研究第一批吸积双星系统对星系际介质再电离和加热的贡献,需要为第一批微类星体建立一个具体的模型。我们的目标是建立一个微类星体喷流的一致模型,其中供体恒星为III星族。我们在轻强子模型的框架内计算了射流中相对论性粒子产生的辐射的光谱能量分布。此外,我们还研究了喷流与早期星系间介质之间的相互作用。所有的计算都是在宇宙学红移值z = 10的情况下进行的。我们确定III星族微类星体的喷流是致密天体附近粒子加速区域和末端喷流中强烈伽马辐射的来源。
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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