Rastello, SaraGieles, MarkArdèvol Falguera, Marc2025-07-182025-07-182025-06https://hdl.handle.net/2445/222355Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2025, Tutors: Sara Rastello, Mark GielesThis work is about Gaia BH3, a binary system formed by a 0.76 M⊙ star orbiting a 32.7 M⊙ black hole. The work focuses on evaluate the possibility of having a inner binary system of black holes instead of a single black hole. It has been performed through analytical analysis. We obtained that it cannot be ruled out this possibility and that, if it host a binary system of black holes, we would not be able to detect it with a probability greater than 77%, for coplanar orbits. The method developed in this work may apply to other systems and be thus useful for future discoveries6 p.application/pdfengcc-by-nc-nd (c) Ardèvol, 2025http://creativecommons.org/licenses/by-nc-nd/3.0/es/Estels binarisForats negres (Astronomia)Treballs de fi de grauDouble starsBlack holes (Astronomy)Bachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess