3 papers
astro-ph.CO2026
High-Redshift Signatures from the Cosmic Dawn and the Epoch of Reionization
Rennan Barkana, Oliver Basquette, Ankita Bera +22
In this chapter, we provide a comprehensive overview of the astrophysical and cosmological processes that shape the 21-cm signal during Cosmic Dawn and the Epoch of Reionization. W…
astro-ph.GA2025
The Formation of Direct Collapse Black Holes at Cosmic Dawn and 21 cm Global Spectrum
Meng Zhang, Bin Yue, Yidong Xu +1
JWST reveals numerous high-z galaxies and Supermassive Black Holes (SMBHs), suggesting that stars and SMBH seeds formation at may be more efficient than previously d…
astro-ph.CO2024
Velocity acoustic oscillations on Cosmic Dawn 21 cm power spectrum as a probe of small-scale density fluctuations
Xin Zhang, Hengjie Lin, Meng Zhang +4
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…