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arXiv 2209.12911astro-ph.COgr-qchep-th
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从LIGO/VIRGO探测的原始黑洞双星方案重建小尺度原始曲率扰动的功率谱

Reconstruction of Power Spectrum of Primordial Curvature Perturbations on small scales from Primordial Black Hole Binaries scenario of LIGO/VIRGO detection

Xinpeng Wang, Ying-li Zhang, Rampei Kimura, Masahide Yamaguchi

摘要:

原初黑洞(PBH)作为LIGO/Virgo探测到的二元黑洞(BBH)合并事件的候选边界,为研究小尺度上的原初曲率扰动提供了一个有用的工具。利用GWTC-1到GWTC-3星表,在暴胀时期PBH起源于小尺度上大的原始曲率扰动的假设下,我们首次重建了小尺度上原始曲率扰动的功率谱。发现原始功率谱的振幅在尺度$\mathcal{O}(1)$ pc上增大到$\mathcal{O}(10^{-2})$。这可能意味着PBH作为BBH可能合并候选者的有效性。

英文摘要:

As a candidate bound for the Binary Black Hole (BBH) merger events detected by LIGO/Virgo, Primordial Black Holes (PBHs) provide a useful tool to investigate the primordial curvature perturbations on small scales. Using the GWTC-1 to GWTC-3 catalogs, under the scenario that PBHs originate from large primordial curvature perturbations on small scales during inflationary epoch, we for the first time reconstruct the power spectrum of primordial curvature perturbations on small scales. It is found that the value of the amplitude of the primordial power spectrum is enhanced to $\mathcal{O}(10^{-2})$ on scales $\mathcal{O}(1)$ pc. This may imply the validity of PBH as a possible BBH merger candidate.

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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