Testing stochastic gravitational wave signals from primordial black holes with optical telescopes
Testing stochastic gravitational wave signals from primordial black holes with optical telescopes
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DOI：
10.1016/j.physletb.2021.136097
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发表时间：
2020-10
影响因子：
4.4
通讯作者：
Sunao Sugiyama;V. Takhistov;E. Vitagliano;A. Kusenko;M. Sasaki;M. Takada
中科院分区：
文献类型：
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作者：
Sunao Sugiyama;V. Takhistov;E. Vitagliano;A. Kusenko;M. Sasaki;M. Takada
原始黑洞（PBH）可以构成暗物质（DM）的主要部分，如果PBH居住在目前不受约束的“月下”质量范围内。由暴胀过程中产生的标量扰动引起的PBH在一类模型中自然会以很宽的频谱出现。由此产生的随机引力波（GW）的背景产生这样的PBH生产可以解释最近报道的北美纳赫兹引力波天文台（NANOGrav）脉冲星定时阵列数据信号，并将在未来的GW观测干涉仪型实验，如激光干涉仪空间天线（丽莎）进行测试。我们表明，广泛的质量功能，这样的PBH DM已经被探测斯巴鲁超Suprime-Cam（HSC）微透镜数据，是一致的检测到的候选事件。即将进行的HSC观测将能够提供对源自此类PBH DM生产情景的随机GW信号的独立确定性测试。
Primordial black holes (PBHs) can constitute the predominant fraction of dark matter (DM) if PBHs reside in the currently unconstrained “sublunar” mass range. PBHs originating from scalar perturbations generated during inflation can naturally appear with a broad spectrum in a class of models. The resulting stochastic gravitational wave (GW) background generated from such PBH production can account for the recently reported North American Nanohertz Observatory for Gravitational Waves (NANOGrav) pulsar timing array data signal, and will be testable in future GW observations by interferometer-type experiments such as Laser Interferometer Space Antenna (LISA). We show that the broad mass function of such PBH DM is already being probed by Subaru Hyper Suprime-Cam (HSC) microlensing data and is consistent with a detected candidate event. Upcoming observations of HSC will be able to provide an independent definitive test of the stochastic GW signals originating from such PBH DM production scenarios.