Conveners
Epoch of Reionization
- Chair: Stefano Camera
The Epoch of Reionization (EoR) remains one of the last frontiers of observational cosmology. The Square Kilometer Array (SKA) is poised to make a preliminary detection of the 21-cm EoR signal within the next decade, and the race will ignite for a confirmation of this detection. One of the most promising avenues is through cross-correlation with galaxies in the same field. I present a...
Observations of the redshifted 21-cm signal from neutral hydrogen during the Epoch of Reionization and Cosmic Dawn are crucial for understanding the physics of the early Universe and one of the SKAO main science goals. Detecting this signal, however, remains challenging due to the presence of bright astrophysical foregrounds and instrumental systematics. Current low-frequency SKAO pathfinders...
The Epoch of Reionization (EoR) is one of the least understood periods in cosmic history. Observations from different probes, including quasar absorption spectra, the cosmic microwave background (CMB) polarization, Lyman-$\alpha$ emission from high redshift galaxies, suggest that the hydrogen neutral fraction in the intergalactic medium (IGM) was likely less than $5\%$ at $z < 6$ and more than...
The cosmological 21-cm forest, a series of absorption lines in the spectra of high-z radio-loud sources arising from the hyperfine structure of neutral hydrogen residing in the intergalactic medium (IGM), has a potential to be a unique probe of the neutral IGM during the Epoch of Reionization. While there are no detections of this signal up to date, I will argue that the prospects of detecting...
The cosmic dawn (CD) of the first luminous objects and eventual epoch of reionisation (EoR) of the intergalactic medium (IGM) remain among the greatest mysteries in modern cosmology. The 21-cm line is one of the most powerful probes of these crucial moments in the history of the Universe, providing a clean window into both cosmology and astrophysics. It has unmatched potential, ultimately able...
The 21cm signal promises to revolutionize our understanding of the first cosmic structures, eventually allowing us to map out the entire observable Universe. However, we have yet to obtain a detection of the interferometric radio signal from this Cosmic Dawn of structure. In these early days, it will be of utmost importance to synergize preliminary 21cm observations with more established...
