论文标题
第一星和黑洞的形成
Formation of the first stars and black holes
论文作者
论文摘要
我们回顾有关宇宙黎明期间恒星形成早期阶段的知识的当前状态。这包括在最低的质量暗物质光环中形成的第一代恒星，其中在非常高的红移（$ z> 20 $），无金属人口III恒星的冷却和凝结具有原始成分的冷却和浓缩，以及在这种早期纪念日形成的第一代黑孔的第一代黑洞，所谓的黑孔种子。讨论了黑洞种子作为人口III恒星崩溃的最终状态，或通过直接崩溃的情况。特别是，鉴于恒星进化模型的最新结果以及银河形成的早期阶段的数值模拟，特别强调了超大恒星的物理学作为直接塌陷黑洞的潜在前体。此外，我们讨论了早期的恒星和黑洞在电离过程中产生的宇宙辐射的作用。
We review the current status of knowledge concerning the early phases of star formation during cosmic dawn. This includes the first generations of stars forming in the lowest mass dark matter halos in which cooling and condensation of gas with primordial composition is possible at very high redshift ($z > 20$), namely metal-free Population III stars, and the first generation of massive black holes forming at such early epochs, the so-called black hole seeds. The formation of black hole seeds as end states of the collapse of Population III stars, or via direct collapse scenarios, is discussed. In particular, special emphasis is given to the physics of supermassive stars as potential precursors of direct collapse black holes, in light of recent results of stellar evolution models, and of numerical simulations of the early stages of galaxy formation. Furthermore, we discuss the role of the cosmic radiation produced by the early generation of stars and black holes at high redshift in the process of reionization.
