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arXiv 0901.4574astro-ph.CO
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Dark Stars:黑暗之星

Dark Stars: Död och Återuppståndelse

Douglas Spolyar, Katherine Freese, Paolo Gondolo, Anthony Aguirre, Peter Bodenheimer, Jeremy A. Sellwood, Naoki Yoshida

摘要:

宇宙历史上恒星演化的第一阶段可能是暗星,由暗物质加热而不是聚变提供动力。弱相互作用的大质量粒子是它们自己的反粒子,它们可以湮灭,并为宇宙中的第一批恒星提供重要的热源。这篇文章和之前的文章介绍了暗星的故事。在第二部分中,我们描述了暗星的结构,并预言它们是非常大质量的($\sim 800 M_\odot$)、冷的(6000 K)、明亮的($\sim 10^6 L_\odot$)、长寿的($\sim 10^6$年),以及可能是(否则无法解释的)超大质量黑洞的前兆。之后,一旦最初的暗物质燃料耗尽,聚变开始,如果散射截面足够强,暗物质湮灭可以再次占主导地位,这样一颗暗星就再次诞生了。

英文摘要:

The first phase of stellar evolution in the history of the universe may be Dark Stars, powered by dark matter heating rather than by fusion. Weakly interacting massive particles, which are their own antiparticles, can annihilate and provide an important heat source for the first stars in the universe. This and the previous contribution present the story of Dark Stars. In this second part, we describe the structure of Dark Stars and predict that they are very massive ($\sim 800 M_\odot$), cool (6000 K), bright ($\sim 10^6 L_\odot$), long-lived ($\sim 10^6$ years), and probable precursors to (otherwise unexplained) supermassive black holes. Later, once the initial dark matter fuel runs out and fusion sets in, dark matter annihilation can predominate again if the scattering cross section is strong enough, so that a Dark Star is born again.

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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