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4 papers · 2 filters
Inevitable manifestation of wiggles in the expansion of the late Universe
Ozgur Akarsu, Eoin O. Colgain, Emre Ozulker +2
Using the fact that the comoving angular diameter distance to the last scattering surface is strictly constrained almost model independently, we show that, for any model agreeing w…
Is the Observable Universe Consistent with the Cosmological Principle?
Pavan Kumar Aluri, Paolo Cea, Pravabati Chingangbam +20
The Cosmological Principle (CP) -- the notion that the Universe is spatially isotropic and homogeneous on large scales -- underlies a century of progress in cosmology. It is conven…
Is Local At Odds With Dark Energy EFT?
Bum-Hoon Lee, Wonwoo Lee, Eoin Ó Colgáin +2
Local determinations currently fall in a window between km/s/Mpc (TRGB) and km/s/Mpc (Tully-Fisher). In contrast, BAO data calibrated in an early…
Revealing Intrinsic Flat CDM Biases with Standardizable Candles
Eoin Ó Colgáin, M. M. Sheikh-Jabbari, Rance Solomon +4
Emerging high redshift cosmological probes, in particular quasars (QSOs), show a preference for larger matter densities, , within the flat CDM framework. Here,…