Dark matter, modified gravity and galaxy rotation curves analyses: Novel methods
Name: ALEJANDRO HERNANDEZ ARBOLEDA
Publication date: 18/12/2023
Examining board:
Name |
Role |
|---|---|
| WILIAM SANTIAGO HIPOLITO RICALDI | Examinador Interno |
Pages
Summary: The current CDM cosmologial model considers dark matter to be the most abundant type of matter on the universe, encompasing approximately 26.8% of it. As its name sugests, dark matter cannot be directly observed by means of electromagnetic radiation, it only interacts through gravitational elds. Historically, the discover of dark matter was made based on the study of the internal dynamics of clusters of galaxies and galaxy rotation curves. The latter provide the most precise local determination of dark matter. Currently, they continue to be one the main ways to study dark matter not only in the context of the CDM but also modied theories of gravity. Here, we focus on the study of galaxy rotation curves in the constext of modied gravity theories in two dierent but related ways: the rst is an alternative approach to test whether modied gravity theories can provide or not a good t for galaxies without previously needing individual ts. And the second one is a more focused study on a specic modied gravity theory called Vainshtein Screening. Our goal is to both develop a fast way to test viability of modied theories of gravity with rotation curves, and then focus on a specic modied gravity theory which is so far poorly explained with rotation curve data.
