220 citations · 1.2k across the 39 of their papers we have counts for
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astro-ph.CO2016★ 14 cited
Imprint of non-linear effects on HI intensity mapping on large scales
Obinna Umeh
Intensity mapping of the HI brightness temperature provides a unique way of tracing large-scale structures of the Universe up to the largest possible scales. This is achieved by us…
astro-ph.CO2016★ 41 cited
A general relativistic signature in the galaxy bispectrum: the local effects of observing on the lightcone
Obinna Umeh, Sheean Jolicoeur, Roy Maartens +1
Next-generation galaxy surveys will increasingly rely on the galaxy bispectrum to improve cosmological constraints, especially on primordial non-Gaussianity. A key theoretical requ…