Angular correlation as a novel probe of supermassive primordial black holes
- Resource Type
- Working Paper
- Authors
- Shinohara, Takumi; Suyama, Teruaki; Takahashi, Tomo
- Source
- Phys. Rev. D 104, 023526 (2021)
- Subject
- Astrophysics - Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
- Language
We investigate the clustering property of primordial black holes (PBHs) in a scenario where PBHs can explain the existence of supermassive black holes (SMBHs) at high redshifts. We analyze the angular correlation function of PBHs originating from fluctuations of a spectator field which can be regarded as a representative model to explain SMBHs without conflicting with the constraint from the spectral distortion of cosmic microwave background. We argue that the clustering property of PBHs can give a critical test for models with PBHs as the origin of SMBHs and indeed show that the spatial distribution of PBHs in such a scenario is highly clustered, which suggests that those models may be disfavored from observations of SMBHs although a careful comparison with observational data would be necessary.
Comment: 27 pages, 8 figures, References updated and some comments are added