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arXiv 2204.04880astro-ph.HEhep-ph
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用超新星遗迹中微子探索星核坍缩的命运

Exploring the Fate of Stellar Core Collapse with Supernova Relic Neutrinos

Yosuke Ashida, Ken'ichiro Nakazato

摘要:

大质量恒星的核塌缩导致不同物理因素的不同命运,从而产生不同的中微子谱。我们把超新星遗迹中微子作为研究恒星坍缩命运的探针。基于不同的核状态方程,我们给出了星核坍缩后三种合成态的SRN通量和事件率谱:典型质量的中子星、更高质量的中子星或形成黑洞的失败超新星。然后,可能的SRN焊剂形成为三种组分的混合物。我们还显示了预期的灵敏度在下一代水基切伦科夫探测器,SK-Gd和超神冈,作为约束的混合分数。该研究为利用SRN测量数据提取天体物理约束提供了一个实例。

英文摘要:

Core collapse of massive stars leads to different fates for various physical factors, which gives different spectra of the emitted neutrinos. We focus on the supernova relic neutrinos (SRNs) as a probe to investigate the stellar collapse fate. We present the SRN fluxes and event rate spectra at a detector for three resultant states after stellar core collapse, the typical mass neutron star, the higher mass neutron star, or the failed supernova forming a black hole, based on different nuclear equations of state. Then possible SRN fluxes are formed as mixtures of the three components. We also show the expected sensitivities at the next-generation water-based Cherenkov detectors, SK-Gd and Hyper-Kamiokande, as constraining the mixture fractions. This study provides a practical example of extracting astrophysical constraints through SRN measurement.

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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