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astro-ph.CO2025
Constraining fuzzy dark matter with the 21-cm power spectrum from Cosmic Dawn and Reionization
Shihang Liu, Yilin Liu, Bowen Peng +4
The 21-cm signals from Cosmic Dawn and the Epoch of Reionization contain valuable information on cosmological structure formation dominated by dark matter. Measurements of the 21-c…
astro-ph.CO2025
Tantalizing Evidence of Reionization Relics in the eBOSS DR16 Ly Forest Correlations: a Preference for Early Reionization
Yifan Zheng, Paulo Montero-Camacho, Zheng Cai +1
Cosmic reionization of HI leaves enduring relics in the post-reionization intergalactic medium, potentially influencing the Lyman- (Ly) forest down to redshifts as low as $z…
astro-ph.IM2025
Multi-fidelity emulator for large-scale 21 cm lightcone images: a few-shot transfer learning approach with generative adversarial network
Kangning Diao, Yi Mao
Emulators using machine learning techniques have emerged to efficiently generate mock data matching the large survey volume for upcoming experiments, as an alternative approach to…