Correlating gravitational wave and gamma-ray signals from primordial black holes
Correlating gravitational wave and gamma-ray signals from primordial black holes
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DOI：
10.1103/physrevd.105.123009
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发表时间：
2022-02
影响因子：
5
通讯作者：
K. Agashe;Jae Hyeok Chang;Steven J. Clark;B. Dutta;Yuhsin Tsai;Tao Xu
中科院分区：
文献类型：
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作者：
K. Agashe;Jae Hyeok Chang;Steven J. Clark;B. Dutta;Yuhsin Tsai;Tao Xu
小行星质量的原始黑洞（PBH）可以解释观测到的暗物质丰度，同时符合目前的间接检测约束。这些PBH可以从霍金辐射中产生伽马射线信号，这些信号在AMEGO和e-ASTROGAM实验未来测量的灵敏度范围内。产生这种可观测到的伽马射线信号的PBH具有来自大的原始曲率波动的宇宙起源。那么，一定有一个同伴，随机引力波（GW）的背景所产生的相同的曲率波动。我们证明，由此产生的GW信号将在未来的探测器，如丽莎，DECIGO，BBO和爱因斯坦望远镜的灵敏度。来自观测到的伽马射线和GW的多信使信号将允许精确测量产生PBH的原始曲率扰动。事实上，我们认为，这两种类型的观测之间的相关性可以提供一个吸烟枪信号PBH。
Asteroid-mass primordial black holes (PBH) can explain the observed dark matter abundance while being consistent with the current indirect detection constraints. These PBH can produce gamma-ray signals from Hawking radiation that are within the sensitivity of future measurements by the AMEGO and e-ASTROGAM experiments. PBH which give rise to such observable gamma-ray signals have a cosmic origin from large primordial curvature fluctuations. There must then be a companion, stochastic gravitational wave (GW) background produced by the same curvature fluctuations. We demonstrate that the resulting GW signals will be well within the sensitivity of future detectors such as LISA, DECIGO, BBO, and the Einstein Telescope. The multi-messenger signal from the observed gamma-rays and GW will allow a precise measurement of the primordial curvature perturbation that produces the PBH. Indeed, we argue that the resulting correlation between the two types of observations can provide a smoking-gun signal of PBH.