3-7 noviembre 2025
Europe/Madrid timezone

Cosmology in an extended parameter space: new constraints on dark energy and neutrino masses with DESI BAO

4 nov. 2025 18:15
15m
Salón de Grados (ADEIT)

Salón de Grados

ADEIT

Talk Cosmology Cosmology

Ponente

Shouvik Roy Choudhury (Academia Sinica Institute of Astronomy and Astrophysics)

Descripción

Based on arXiv: 2409.13022 and arXiv: 2504.15340 (both published in ApJ Letters) We update constraints on cosmological parameters in a 12-parameter model, which extends the standard 6-parameter ΛCDM to include dynamical dark energy and massive neutrinos, along with other new parameters. We use the latest Planck PR4 (2020) likelihoods, DESI DR1 & DR2 BAO, and the latest uncalibrated type Ia Supernovae (SNe) datasets. In this talk, I will discuss the implications for dynamical dark energy in such an extended model, and at the same time, provide robust bounds on neutrino masses which will be useful for the astro- and particle physics communities. I will also discuss the current status of the weak lensing tension and the Hubble tension in this extended cosmology.

Autor primario

Shouvik Roy Choudhury (Academia Sinica Institute of Astronomy and Astrophysics)

Materiales de la presentación

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