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arXiv 2112.00643astro-ph.HEastro-ph.SR
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高红移伽玛暴的性质

Properties of High-Redshift GRBs

Chris L. Fryer, Amy Y. Lien, Andrew Fruchter, Giancarlo Ghirlanda, Dieter Hartmann, Ruben Salvaterra, Phoebe R. Upton Sanderbeck, Jarrett L. Johnson

摘要:

伽马射线暴(GRB)的巨大能量使其成为早期宇宙的理想探测器。通过使用高红移伽玛暴余辉中的吸收线,天文学家可以研究早期宇宙中金属的演化。随着对伽玛暴祖先性质的了解,观测到的高红移伽玛暴的速率和性质可以探测高红移恒星的形成历史和初始质量函数。本文详细研究了黑洞吸积盘范式下长持续时间伽玛暴性质的金属丰度和质量依赖性,预测了这些性质随红移的演化。这些模型在当前的伽玛暴观测上进行校准,然后用于对新的观测和研究高红移伽玛暴的新任务(例如拟议中的伽莫夫任务)进行预测。

英文摘要:

The immense power of gamma-ray bursts (GRBs) make them ideal probes of the early universe. By using absorption lines in the afterglows of high-redshift GRBs, astronomers can study the evolution of metals in the early universe. With an understanding of the nature of GRB progenitors, the rate and properties of GRBs observed at high redshift can probe the star formation history and the initial mass function of stars at high redshift. This paper presents a detailed study of the metallicity- and mass-dependence of the properties of long-duration GRBs under the black-hole accretion disk paradigm to predict the evolution of these properties with redshift. These models are calibrated on the current GRB observations and then used to make predictions for new observations and new missions (e.g. the proposed Gamow mission) studying high-redshift GRBs.

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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