454 citations · 1.6k across the 23 of their papers we have counts for
24 papers
Do high redshift QSOs and GRBs corroborate JWST?
Eoin Ó Colgáin, M. M. Sheikh-Jabbari, Lu Yin
The James Webb Space Telescope (JWST) is reporting massive high redshift galaxies that appear challenging from the CDM perspective. Interpreted as a cosmological problem, this n…
A comparison of Bayesian and frequentist confidence intervals in the presence of a late Universe degeneracy
Eoin Ó Colgáin, Saeed Pourojaghi, M. M. Sheikh-Jabbari +1
Hubble tension is a problem in one-dimensional (1D) posteriors, since local determinations are only sensitive to a single parameter. Projected 1D posteriors for CDM cosmol…
Hints of FLRW Breakdown from Supernovae
Chethan Krishnan, Roya Mohayaee, Eoin Ó Colgáin +2
A 10\% difference in the scale for the Hubble parameter constitutes a clear problem for cosmology. Here, considering angular distribution of Type Ia supernovae (SN) within the Pant…
A Critique of Holographic Dark Energy
Eoin Ó Colgáin, M. M. Sheikh-Jabbari
Observations restrict the parameter space of Holographic Dark Energy (HDE) so that a turning point in the Hubble parameter is inevitable. Concretely, cosmic microwave backgr…
Lost in the Log-Polynomial Expansion: Comment on arXiv:2101.08278
Aritra Banerjee, Eoin Ó Colgáin, Misao Sasaki +1
In [1] we highlighted the fact that the log polynomial expansion employed in Nature Astron. 3, no.3, 272-277 (2019) [2] is a poor approximation to flat CDM, so using it to infer…
Elucidating cosmological model dependence with
E. Ó Colgáin, M. M. Sheikh-Jabbari
We observe that the errors on the Hubble constant , a universal parameter in any FLRW cosmology, can be larger in specific cosmological models than Gaussian Processes (GP) dat…