Velocity Acoustic Oscillations on Cosmic Dawn 21 cm Power Spectrum as a Probe of Small-scale Density Fluctuations

Velocity Acoustic Oscillations on Cosmic Dawn 21 cm Power Spectrum as a Probe of Small-scale Density Fluctuations

We investigate the feasibility of using the velocity acoustic oscillations (VAO) features on the Cosmic Dawn 21 cm power spectrum to probe small-scale density fluctuations. In the standard cold dark matter (CDM) model, Population III stars form in minihalos and affect the 21 cm signal through Ly α a...

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Bibliographic Details
Main Authors: Xin Zhang, Hengjie Lin, Meng Zhang, Bin Yue, Yan Gong, Yidong Xu, Xuelei Chen
Format: Article
Language:English
Published: IOP Publishing 2024-01-01
Series:The Astrophysical Journal
Subjects:
Reionization
H I line emission
Population III stars
Cold dark matter
Warm dark matter
Large-scale structure of the universe
Online Access:https://doi.org/10.3847/1538-4357/ad235b

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