Solanes, José M. (José María)Ovejero Torres, Laura2023-09-062023-09-062023-06https://hdl.handle.net/2445/201754Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2023, Tutor: José María Solanes MajúaThis paper explores different techniques for measuring the Hubble-Lemaître constant. After reviewing how the measurements of this important cosmological parametre have evolved through history, we present and compare the fundamental methods, both model-independent, based on standard candles/sirens and standard rulers, and model-dependent, based on the cosmic microwave background, where a discrepancy between the two groups of results has been recently named Hubble tension. Sources of systematic uncertainty as well as possible modifications to the ΛCDM model are discussed in order to mitigate this tension.6 p.application/pdfengcc-by-nc-nd (c) Ovejero, 2023http://creativecommons.org/licenses/by-nc-nd/3.0/es/Llei de Hubble-LemaîtreTreballs de fi de grauHubble's lawBachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess