E. Ó. Colg'ain

collaborators

3 papers

astro-ph.CO2026

Redshift Dependence of $H_{0}$ Dipole in Pantheon+ Supernovae

M. H. Jalali-Kanafi, E. Ó Colgáin, S. Pourojaghi +1

We examine the dipole structure in the local cosmic expansion rate $H_{0}$ using the Pantheon+ compilation of Type Ia supernovae. We reconstruct directional maps of $H_{0}$ across the…

astro-ph.CO2024

On Redshift Evolution & Negative Dark Energy Density in Pantheon+ Supernovae

Mohammad Malekjani, RuairÃ Mc Conville, Eoin Ã ColgÃ¡in +2

Within the Friedmann-LemaÃ®tre-Robertson-Walker (FLRW) framework, the Hubble constant $H_{0}$ is an integration constant. Thus, consistency of the model demands observational constan…

astro-ph.CO2024

Putting Flat $I^$ CDM In The (Redshift) Bin

Eoin Ã ColgÃ¡in, M. M. Sheikh-Jabbari, Rance Solomon +2

Flat $I^$ CDM cosmology is specified by two constant fitting parameters at the background level in the late Universe, the Hubble constant $H_{0}$ and matter density (today) $I^c ◯_{m}$ . Ma…

Redshift Dependence of H0​ Dipole in Pantheon+ Supernovae

On Redshift Evolution & Negative Dark Energy Density in Pantheon+ Supernovae

Putting Flat I^CDM In The (Redshift) Bin

Redshift Dependence of $H_{0}$ Dipole in Pantheon+ Supernovae

Putting Flat $I^$ CDM In The (Redshift) Bin