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arXiv 2301.01459astro-ph.GAcs.AI
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类星体中心超大质量黑洞质量的LSTM模型

Modeling the Central Supermassive Black Holes Mass of Quasars via LSTM Approach

Sharif University of Technology(谢里夫理工大学);K. N. Toosi University of Technology(霍梅尼国际大学(K. N. 图西理工大学));Institute for Research in Fundamental Sciences (IPM)(基础科学研究所(IPM))

Seyed Sajad Tabasi, Reyhaneh Vojoudi Salmani, Pouriya Khaliliyan, Javad T. Firouzjaee

摘要:

关于类星体的一个基本问题与它们中心的超大质量黑洞有关。这些具有如此巨大质量的黑洞存在的原因尚不清楚,人们提出了各种模型来解释它们。然而,至今仍未有一个为社会所接受的全面解释。我们唯一可以肯定的是,这些黑洞不是由巨星坍缩产生的,也不是由它们周围的物质吸积产生的。此外,另一个重要的问题是这些黑洞随时间的质量分布。观测表明,如果我们通过红移返回,我们看到质量更大的黑洞,在经过恒星形成红移的峰值之后,这个过程就会减少。然而,这个峰值的确切红移仍然有争议。在本文中,我们借助深度学习和LSTM算法,通过考虑QuasarNET数据,试图找到一个合适的模型来描述类星体中心黑洞质量随时间的变化。我们的模型是用这些从红移3到7的数据建立的,对于两个红移间隔0到3和7到10,它预测了类星体中心超大质量黑洞的质量。我们还用中心黑洞的观测数据对我们的模型进行了特定区间的检验,并对结果进行了讨论。

英文摘要:

One of the fundamental questions about quasars is related to their central supermassive black holes. The reason for the existence of these black holes with such a huge mass is still unclear and various models have been proposed to explain them. However, there is still no comprehensive explanation that is accepted by the community. The only thing we are sure of is that these black holes were not created by the collapse of giant stars, nor by the accretion of matter around them. Moreover, another important question is the mass distribution of these black holes over time. Observations have shown that if we go back through redshift, we see black holes with more masses, and after passing the peak of star formation redshift, this procedure decreases. Nevertheless, the exact redshift of this peak is still controversial. In this paper, with the help of deep learning and the LSTM algorithm, we tried to find a suitable model for the mass of central black holes of quasars over time by considering QuasarNET data. Our model was built with these data reported from redshift 3 to 7 and for two redshift intervals 0 to 3 and 7 to 10, it predicted the mass of the quasar's central supermassive black holes. We have also tested our model for the specified intervals with observed data from central black holes and discussed the results.

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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