Reconstructing patchy helium reionization using the cosmic microwave background and large-scale structure

Mesut Çalışkan, Neha Anil Kumar, Selim C. Hotinli +1

The intergalactic helium became fully ionized by the end of cosmic noon ($z\sim 2$). Similarly to the reionization of hydrogen, helium reionization is expected to be patchy, driven…