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- W4290803491 abstract "Primordial black holes (PBHs) can be produced in the very early Universe due to the large density fluctuations. The cosmic background of axion-like particles (ALPs) could be non-thermally generated by PBHs. In this paper, we investigate the ALPs emitted by ultra-light PBHs with the mass range $10 , {rm g} lesssim M_{rm PBH} lesssim 10^9 , rm g$, in which PBHs would have completely evaporated before the start of Big Bang Nucleosynthesis (BBN) and can therefore not be directly constrained. In this case, the minimal scenario that ALPs could interact only with photons is supposed. We study the stochastic oscillations between the ALPs and photons in the cosmic magnetic field in detail. The primordial magnetic field (PMF) can be modelled as the stochastic background field model with the completely non-homogeneous component of the cosmic plasma. Using the latest stringent limits on PMF, we show the numerical results of ALP-photon oscillation probability distributions with the homogeneous and stochastic magnetic field scenarios. The PBH-induced stochastic ALP-photon oscillations in the PMF may have the effects on some further phenomena, such as the cosmic microwave background (CMB), the cosmic X-ray background (CXB), and the extragalactic gamma-ray background (EGB)." @default.
- W4290803491 created "2022-08-12" @default.
- W4290803491 creator A5000319667 @default.
- W4290803491 date "2022-08-09" @default.
- W4290803491 modified "2023-10-17" @default.
- W4290803491 title "Primordial black holes induced stochastic axion-photon oscillations in primordial magnetic field" @default.
- W4290803491 doi "https://doi.org/10.48550/arxiv.2208.04605" @default.
- W4290803491 hasPublicationYear "2022" @default.
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