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arXiv 0709.2369astro-phhep-ph
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暗物质对第一批恒星的影响:恒星演化的新阶段

The Effect of Dark Matter on the First Stars: A New Phase of Stellar Evolution

Katherine Freese, Paolo Gondolo, Douglas Spolyar

摘要:

原恒星晕中的暗物质(DM)可以极大地改变目前第一批恒星形成的理论框架。超对称DM湮灭产生的热量可以压倒任何冷却机制,从而阻碍恒星形成过程,并可能导致新的恒星相。宇宙中形成的第一批恒星可能是“暗星”;即,巨大(大于1天文单位)的氢氦星,由DM湮灭而不是核聚变提供动力。讨论了探测暗星的可能性。

英文摘要:

Dark matter (DM) in protostellar halos can dramatically alter the current theoretical framework for the formation of the first stars. Heat from supersymmetric DM annihilation can overwhelm any cooling mechanism, consequently impeding the star formation process and possibly leading to a new stellar phase. The first stars to form in the universe may be ``dark stars''; i.e., giant (larger than 1 AU) hydrogen-helium stars powered by DM annihilation instead of nuclear fusion. Possibilities for detecting dark stars are discussed.

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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