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Hunting down horizon-scale effects with multi-wavelength surveys
(American Astronomical Society, 2015)
Next-generation cosmological surveys will probe ever larger volumes of the universe, including the largest scales, near and beyond the horizon. On these scales, the galaxy power spectrum carries signatures of local primordial ...
Constraining primordial non-Gaussianity by combining next-generation galaxy and 21 cm intensity mapping surveys
(Institute for Ionics, 2023)
Surveys of the matter distribution contain ‘fossil’ information on possible non-Gaussianity that is generated in
the primordial universe. This primordial signal survives only on the largest scales where cosmic variance ...