220 citations · 1.2k across the 39 of their papers we have counts for
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astro-ph.CO2023★ 4 cited
The HI intensity mapping power spectrum: insights from recent measurements
Hamsa Padmanabhan, Roy Maartens, Obinna Umeh +1
The first direct measurements of the HI intensity mapping power spectrum were recently made using the MeerKAT telescope. These measurements are on nonlinear scales, at redshifts 0.…
astro-ph.CO2023
Vorticity generation in cosmology and the role of shell crossing
Obinna Umeh
There is no source for cosmic vorticity within the cold dark matter cosmology. However, vorticity has been observed in the universe, especially on the scales of clusters, filaments…