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arXiv 1709.03500astro-ph.COhep-ph
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用类LISA引力波探测器寻找原始黑洞

Using LISA-like Gravitational Wave Detectors to Search for Primordial Black Holes

Huai-Ke Guo, Jing Shu, Yue Zhao

摘要:

原始黑洞(PBH),可以在早期宇宙中自然产生,仍然是一个有希望的暗物质候选者。它可以与星系中心的超大质量黑洞(SMBH)合并,并在类似LISA实验的有利频率区域产生引力波(GW)信号。在这项工作中,我们开始研究的事件率计算这样的极端质量比吸气(EMRI)。包括各种建议GW探测器的灵敏度,我们发现,这样的实验提供了一个新颖的和优秀的工具来测试的情况下,PBH构成(分数)暗物质。DM的PBH能量密度分数($f_\text{PBH}$)可能与$10^{-3} \sim 10^{-4}$一样小。此外,LISA具有搜索高达$10^{-2} \sim 10^{-1} M_\odot$的PBH质量的能力。其他提出的GW实验可以探测较低的PBH质量状态。

英文摘要:

Primordial black hole (PBH), which can be naturally produced in the early universe, remains a promising dark matter candidate . It can merge with a supermassive black hole (SMBH) in the center of a galaxy and generate gravitational wave (GW) signals in the favored frequency region of LISA-like experiments. In this work, we initiate the study on the event rate calculation for such extreme mass ratio inspirals (EMRI). Including the sensitivities of various proposed GW detectors, we find that such experiments offer a novel and outstanding tool to test the scenario where PBH constitutes (fraction of) dark matter. The PBH energy density fraction of DM ($f_\text{PBH}$) could potentially be explored as small as $10^{-3} \sim 10^{-4}$. Further, LISA has the capability to search for PBH mass upto $10^{-2} \sim 10^{-1} M_\odot$. Other proposed GW experiments can probe lower PBH mass regime.

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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