Baryonic acoustic oscillations from 21 cm intensity mapping: the Square Kilometre Array case
Baryonic acoustic oscillations from 21 cm intensity mapping: the Square Kilometre Array case
We quantitatively investigate the possibility of detecting baryonic acoustic oscillations (BAO) using single-dish 21 cm intensity mapping observations in the post-reionization era. We show that the telescope beam smears out the isotropic BAO signature and, in the case of the Square Kilometre Array (SKA) instrument, makes it undetectable at redshifts …