Dynamics of the formation of a quark superconducting phase in nêutron stars

• Processo: 03/06548-6
• Modalidade de apoio: Bolsas no Exterior - Pesquisa
• Data de Início da vigência: 21 de outubro de 2003
• Data de Término da vigência: 20 de dezembro de 2003
• Área de conhecimento: Ciências Exatas e da Terra - Astronomia - Astrofísica Estelar
• Pesquisador responsável: Germán Lugones
• Beneficiário: Germán Lugones
• Pesquisador Anfitrião: Ignazio Bombaci
• Instituição Sede: Pessoa Física
• Instituição Anfitriã: Università di Pisa, Itália
• Assunto(s): Estrelas de nêutrons Supernovas
• Palavra(s)-Chave do Pesquisador: Astrofisica Nuclear | Bursts De Raios Gama | Estrelas De Neutrons | Estrutura E Evolucao Estelar | Supernovas

Resumo

We propose to investigate the physical processes occurring during the transition from nuclear matter to quark superconducting matter in the course of formation of neutron stars and the observational signatures expected from this transition. Typical conditions of proto-neutron star birth, such as finite nuclear strangeness, finite temperature and neutrino trapping are to be included self-consistently in the analysis. Pairing will be included in the equations of state and in the nucleation rate of the quark bubbles. We shall also consider the possible formation of an intermediary two flavor superconducting phase, the production of strangeness in the deconfined phase, and the temperature dependence of the pairing gap. We shall investigate the impact of these processes for supernovae, gamma ray bursters, and compact stars. (AU)