Open access
Jun 2026
Wedge-avoidance Fisher forecasts for primordial features from dark-ages 21-cm power spectrum and bispectrum
The Dark Ages offer a uniquely clean window on primordial physics, making the redshifted 21-cm signal a promising probe of inflation models. Forecasts for interferometric 21-cm measurements must account for foreground wedge avoidance, which removes a substantial fraction of Fourier modes, and this effect is especially...
Chen Zhang, Fu-Ren Deng, Yi-Dong Xu et al.
· Journal of Cosmology and Ast... · 0 citations