<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Chandrasekhar mass explosions of white dwarfs\r\nas a model for type Ia supernovae and\r\ntheir contribution to cosmic nucleosynthesis"^^ . "Although type Ia supernovae are widely applied as cosmological distance indicators and\r\ncontribute significantly to the enrichment of the Universe with iron group elements, their physi-\r\ncal nature is not clear yet. The heterogeneous class of type Ia supernovae is divided into several\r\nsubtypes according to their observational properties, and a whole variety of possible explosion\r\nscenarios has been put forward in order to explain these extraordinarily bright events. The focus\r\nof this work lies on the numerical modeling of explosions in Chandrasekhar mass carbon-oxygen\r\nwhite dwarfs as well as on the investigation of the nucleosynthesis yields of several explosion chan-\r\nnels. To this end, numerical simulations of the explosion, the propagation of radiation through the\r\nexpanding debris, and the galactic chemical evolution of the Milky Way were conducted. It was\r\nfound that, in line with earlier studies, deflagrations in Chandrasekhar mass white dwarfs are a\r\nviable model for type Iax supernovae, a subluminous subclass of type Ia supernovae. However,\r\nthe parameter study employing different ignition conditions, central densities, metallicities, com-\r\nposition and rigid rotation revealed that the very faint end of the subclass can not be reproduced.\r\nFurthermore, a set of gravitationally confined detonation simulations has been carried out. In this\r\nscenario an initial deflagration is followed by a detonation initiated near the surface of the white\r\ndwarf core. It could be shown that the synthetic observables do not agree with either normal or\r\nsubluminous type Ia supernovae but that objects similar to SN 1991T might be explained by this\r\nexplosion mechanism. Finally, the nucleosynthesis yields of various different explosion models\r\nwere analyzed. This study shows that explosions in sub-Chandrasekhar mass white dwarfs with an\r\naccreted helium shell can contribute significantly to the abundance of manganese, zinc, and copper\r\nin the Universe and should be included in future galactic chemical evolution studies."^^ . "2022" . . . . . . . "Florian"^^ . "Lach"^^ . "Florian Lach"^^ . . . . . . "Chandrasekhar mass explosions of white dwarfs\r\nas a model for type Ia supernovae and\r\ntheir contribution to cosmic nucleosynthesis (PDF)"^^ . . . "PhD_FlorianLach.pdf"^^ . . . "Chandrasekhar mass explosions of white dwarfs\r\nas a model for type Ia supernovae and\r\ntheir contribution to cosmic nucleosynthesis (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Chandrasekhar mass explosions of white dwarfs\r\nas a model for type Ia supernovae and\r\ntheir contribution to cosmic nucleosynthesis (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Chandrasekhar mass explosions of white dwarfs\r\nas a model for type Ia supernovae and\r\ntheir contribution to cosmic nucleosynthesis (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Chandrasekhar mass explosions of white dwarfs\r\nas a model for type Ia supernovae and\r\ntheir contribution to cosmic nucleosynthesis (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Chandrasekhar mass explosions of white dwarfs\r\nas a model for type Ia supernovae and\r\ntheir contribution to cosmic nucleosynthesis (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #31666 \n\nChandrasekhar mass explosions of white dwarfs \nas a model for type Ia supernovae and \ntheir contribution to cosmic nucleosynthesis\n\n" . "text/html" . . . "500 Naturwissenschaften und Mathematik"@de . "500 Natural sciences and mathematics"@en . . . "520 Astronomie"@de . "520 Astronomy and allied sciences"@en . . . "530 Physik"@de . "530 Physics"@en . .