Study of the properties of the universe using the cosmic microwave background radiation and large scale structure tracers

• Grant number: 19/06040-0
• Support type: Scholarships in Brazil - Post-Doctorate
• Effective date (Start): January 01, 2020
• Effective date (End): December 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Astronomy
• Principal researcher: Carlos Alexandre Wuensche de Souza
• Grantee: Camila Paiva Novaes
• Home Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovações (Brasil). São José dos Campos , SP, Brazil
• Associated research grant: 14/07885-0 - The BINGO telescope: a new 21 cm window for exploring the dark universe and other astrophysics, AP.TEM

Abstract

Recent measurements of cosmological observables, such as the Type Ia Supernovae, the Cosmic Microwave Background (CMB) radiation, the Baryon Acoustic Oscillations (BAO), among others, allow us to discriminate between cosmological models, and indicate the $\Lambda$CDM as the favored model. Still, several questions remain open, among them: How is the Universe structured on large scales? Is it homogeneous and isotropic as expected by the Cosmological Principle? Is the spatial distribution of matter as predicted by cosmological simulations? Aiming to explore some of these questions, the present project presents three very complementary research lines, delimited here by the dataset that will be used. The first two, with large intercession, aim to analyze the spatial distribution of luminous matter, especially the way it clusters in regions of high and low density, at different redshift intervals. Our goal will be to study how the luminous matter traces the distribution of dark matter in the universe, which will be done using galaxy catalogs and intensity mapping of the HI emission (data and simulations). Regarding the HI measurements, we will explore the scientific case of the BINGO telescope, designed to make the first radiofrequency BAO detection, with a large part of its instrumentation and data analysis pipeline being developed at INPE. Finally, the third research line comprises a rigorous statistical analysis of the CMB temperature field anisotropies, exploring the anomalies observed in its distribution. In particular, we will investigate how one of these anomalies, namely, the Cold Spot, would appear in the future CMB polarization data.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

AVILA, F.; BERNUI, A.; DE CARVALHO, E.; NOVAES, C. P.. The growth rate of cosmic structures in the local Universe with the ALFALFA survey. Monthly Notices of the Royal Astronomical Society, v. 505, n. 3, p. 3404-3413, AUG 2021. (19/06040-0)