3 papers
astro-ph.CO2025
On the Analysis Dependence of DESI Dynamical Dark Energy
Eoin Ó Colgáin, Saeed Pourojaghi, M. M. Sheikh-Jabbari
We continue scientific scrutiny of the DESI dynamical dark energy (DE) claim by explicitly demonstrating that the result depends on the analysis pipeline. Concretely, we define a l…
astro-ph.CO2025
How much has DESI dark energy evolved since DR1?
Eoin Ó Colgáin, Saeed Pourojaghi, M. M. Sheikh-Jabbari +1
DESI has reported a dynamical dark energy (DE) signal based on the CDM model that is in conflict with Hubble tension. Recalling that the combination of DESI DR1 BAO and DR…
astro-ph.CO2025
CDM model against redshift-binned data: A mock analysis based on SNIa and Cosmic Chronometers
Saeed Pourojaghi, Mohammad Malekjani
Despite the broad successes of the flat CDM model and its fitness to the various cosmological observations, it confronts challenges stemming from anomalies in the measurements o…