使用LIGO O3a数据对行星质量原始黑洞的引力波限制
Andrew L Miller1,2, Nancy Aggarwal3, Sébastien Clesse4
1<a href="https://ror.org/00f9tz983">Nikhef-National Institute for Subatomic Physics</a>, Science Park 105, 1098 XG Amsterdam, The Netherlands.
Physical review letters
|September 27, 2024
概括
科学家们从合并的行星质量物体,潜在的原始黑洞 (PBHs) 中寻找引力波. 没有发现任何信号,但该研究对PBH融合率及其对暗物质的贡献设定了限制.
科学领域:
- 天体物理学和宇宙学
- 引力波天文学 引力波天文学
- 紧物体物理学 紧物体物理学
背景情况:
- 原始黑洞 (PBHs) 是在早期宇宙中形成的假设黑洞.
- 来自令人鼓舞的紧物体的引力波 (GWs) 提供了对它们存在的独特探测器.
- 太阳底质量紧物体,包括潜在的PBH,难以检测.
研究的目的:
- 通过使用LIGO-Virgo-KAGRA数据,进行首次对激发行星质量紧物体的搜索.
- 为此类系统设置合并率密度的上限.
- 为了限制PBHs作为暗物质组成部分的丰富性.
主要方法:
- 来自LIGO-Virgo-KAGRA第三次观测运行的上半年数据的分析.
- 搜索来自等质量和高度不对称的质量比二进制星的GW信号.
- 解释速率密度极限以限制PBH暗物质分数.
主要成果:
- 没有发现激发行星质量紧物体的重要候选者.
- 已确定的最大亮度距离为0.1-100) kpc,用于搜索.
- 在O(10^3) 到O(10^-7) 的合并率密度上,推导出独立于模型的上限 kpc^-3 yr^-1.
结论:
- 该研究提供了可能由PBHs组成的暗物质部分的限制.
- 对于质量相同的PBH二进制系统,PBH质量为2x10^-3 M_和10^-2 M_之间的限制.
- 对于不对称的二进制系统,也得出了约束,补充了微透镜观测.
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