4 papers
The First Billion Years in Seconds: An Effective Model for the 21-cm Signal with Population III Stars
Hector Afonso G. Cruz, Julian B. Munoz, Nashwan Sabti +1
Observations of the 21-cm signal are opening a window to the cosmic-dawn epoch, when the first stars formed. These observations are usually interpreted with semi-numerical or hydro…
Rapid Methods for Modeling Overdensities of Massive Neutrinos and Other Non-Cold Relics
Keduse Worku, Nashwan Sabti, Marc Kamionkowski
Recent work has highlighted the potentially detectable gravitational-lensing effect of neutrino halos on cosmic-microwave-background (CMB) fluctuations with upcoming instruments li…
A Generative Modeling Approach to Reconstructing 21-cm Tomographic Data
Nashwan Sabti, Ram Reddy, Julian B. Muñoz +2
Analyses of the cosmic 21-cm signal are hampered by astrophysical foregrounds that are far stronger than the signal itself. These foregrounds, typically confined to a wedge-shaped…
Unveiling Neutrino Halos with CMB Lensing
Selim C. Hotinli, Nashwan Sabti, Jaxon North +1
The existence of a cosmic neutrino background has been inferred indirectly from cosmological surveys through its effect on the linear-theory evolution of primordial density perturb…