Banca de DEFESA: ZILMAR CANDIDO DE SANTANA JUNIOR

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ZILMAR CANDIDO DE SANTANA JUNIOR
DATE: 09/06/2022
TIME: 09:00
LOCAL: Google Meet
TITLE:

Testing the dark matter density evolution law with the large-scale structure

KEY WORDS:

Cosmology, Standard Model, Dark matter density evolution law, Interacting models

PAGES: 90
BIG AREA: Ciências Exatas e da Terra
AREA: Física
SUMMARY:

The main purpose of this work is to propose an observational test for the dark matter density evolution law. We allow a deviation from the standard law such as
ρ_{DM}∝ (1+z)^{3+ε}, where ε = 0 recovers the canonical result. As observational sources, 40 measurements of the gas mass fraction of galaxy clusters on the
interval 0.078 ≤ z ≤ 1.063 and 18 points of measurements of Baryon Acoustic Oscillations on the interval 0.11 ≤ z ≤ 2.4 were used.
The Baryon Acoustic Oscillations data were used to infer the angular diameter distance to the galaxy clusters. From the statistical analyses,
we obtained ε =0 within 2σ c.l., in full agreement with recent results that used other observational quantities. Our results are independent of a
specific model of interaction in the dark sector.

BANKING MEMBERS:
Externo à Instituição - JOAO RAFAEL LUCIO DOS SANTOS - UFCG
Interno - 1672854 - RAIMUNDO SILVA JUNIOR
Presidente - 1390849 - RODRIGO FERNANDES LIRA DE HOLANDA