Analysis of low edge band data to constrain parameters of the universe's first light sources

Abstract

The universe in its earliest stages has been a great source of questions given the difficulty of direct observation. Models have been created, both mathematical and computational, capable of giving us an idea of the early universe and its evolution over billions of years. The 21 cm line emitted by neutral hydrogen can provide us with the observational information needed to check the accuracy of these models. This document presents a preliminary project for the study and analysis of the initial conditions that gave rise to an absorption profile at 78 MHz detected by the low-band instruments of the “Experiment to Detect the Global Epoch of Reionization Signature”. This profile agrees with the models of the global 21-cm signal of Neutral Hydrogen, during the formation of the first structures of the universe. It is expected that at the end of this project an efficient tool will be available for the study of the signals obtained by ground detectors and that, comparing them with different 21 cm models, will provide information that will help us better understand the first stages of the universe.