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arXiv 2603.04784astro-ph.GA
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用原初黑洞种子核加速大规模星系形成

Accelerating massive galaxy formation with primordial black hole seed nuclei

Swinburne University(斯威本大学);ARC Centre of Excellence for Dark Matter Particle Physics(暗物质粒子物理卓越中心)

Jeremy Mould

AI总结:

研究提出原初黑洞种子核能加速大规模星系形成,通过缩短组装时间并产生低表面亮度星系。

摘要:

如果存在大量原初黑洞(PBHs)并且构成暗物质的一部分,它们可以显著催化星系形成。通过作为预先存在的高密度种子发挥作用,它们可以将星系组装时间缩短到最多10^8太阳质量PBH种子的100 Myr以内,从而允许快速形成宿主暗物质晕。此外,低表面亮度或弥散星系可能是这一过程的自然结果,可能作为由较小PBHs种子未能吸积主要重子成分的暗物质晕的残余。

英文摘要:

If massive primordial black holes (PBHs) exist and constitute a fraction of the dark matter, they can dramatically catalyze galaxy formation. By acting as pre-existing, high-density seeds, they can shorten the galaxy assembly time to as little as 100 Myr for up to 10^8 solar mass PBH seeds, allowing for the rapid formation of host halos. Furthermore, low surface brightness or diffuse galaxies may represent a natural outcome of this process, perhaps as the residue of halos seeded by smaller PBHs that failed to accrete a major baryonic component.

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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