Winds and feedback from supermassive black holes accreting at low rates

• Ano de defesa: 2019
• Autor(a) principal: Almeida, Ivan Carlos de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Biblioteca Digitais de Teses e Dissertações da USP
• Palavras-chave em Português: accretion discs; active galactic nuclei; black holes; buracos negros; discos de acreção; núcleos ativos de galáxia; numerical simulations; simulações numéricas
• Link de acesso: http://www.teses.usp.br/teses/disponiveis/14/14131/tde-25062019-155250/

The local universe is dominated by quiescent galaxies with little or no ongoing star formation. Once star formation has been shut down in a possible quasar phase, energy feedback in the form of outflows from a supermassive black hole (SMBH) accreting at a low rate is one of the leading candidates for heating up or removing gas accreted afterwards. In this work we performed hydrodynamic simulations of radiatively inefficient accretion flows around supermassive black holes and investigate the generation of outflows by the accretion flow. We found that hot accretion flows can produce powerful subrelativistic winds that carry considerable amounts of energy away and they can provide feedback inside the host galaxy.