A list of 48 Binary Black Hole mergers
Melissa Freitas (1,3) Laurindo Sobrinho (1,2,3)
(1) Faculdade de Ciências Exatas e da Engenharia (FCEE), Universidade da Madeira, Caminho da Penteada, 9000-390 Funchal
(2) Instituto de Astrofísica e Ciências do Espaço, Universidade de Lisboa, OAL, Tapada da Ajuda, PT1349-018 Lisboa, Portugal
(3) Grupo de Astronomia da Universidade da Madeira (GAUMa)The first direct Gravitational Wave (GW) detection was made by the Advanced Laser Interferometer Gravitational Wave Observatory (LIGO) on September 14, 2015. The emission was originated when two Black Holes (BHs) forming a Binary Black Hole (BBH) system merged given rise to a single BH. Since then dozens of GW events associated with the merge of compact objects were detected. Here we focus on the 48 GW events related to the merge of BBHs. We summarized the key parameters which characterize each one of these 48 BBH systems and explored some relations between them. In particular we estimated that the amount of energy radiated in the form of GWs is $\approx 5\%$ of the total initial mass of the system. We discussed the origin of the 48 BBHs (stellar or primordial) and conclude that at least in 10 of the cases it is highly probable that the origin is primordial, i.e., the BBH is formed by two individual Primordial Black Holes.
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Relatório A list of 48 Binary Black Hole mergers; Freitas S. M. A., Sobrinho J. L. G. (2021); Relatório do trabalho desenvolvido ao abrigo do programa Estágios de Verão 2021 da Secretaria Regional da Educação - Direção Regional de Juventude e Desporto, 39pp; Universidade da Madeira 2021. pdf (1.03MB)