Search results for "Convective overturn"

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The fully developed remnant of a neutrino-driven supernova: Evolution of ejecta structure and asymmetries in SNR Cassiopeia A

2020

Abridged. We aim at exploring to which extent the remnant keeps memory of the asymmetries that develop stochastically in the neutrino-heating layer due to hydrodynamic instabilities (e.g., convective overturn and the standing accretion shock instability) during the first second after core bounce. We coupled a 3D HD model of a neutrino-driven SN explosion with 3D MHD/HD simulations of the remnant formation. The simulations cover 2000 years of expansion and include all physical processes relevant to describe the complexities in the SN evolution and the subsequent interaction of the stellar debris with the wind of the progenitor star. The interaction of large-scale asymmetries left from the ea…

Shock waveAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesContext (language use)Astrophysics01 natural sciencesShock wavesSettore FIS/05 - Astronomia E Astrofisica0103 physical sciencesConvective overturnAstrophysics::Solar and Stellar AstrophysicsEjecta010303 astronomy & astrophysicsAstrophysics::Galaxy AstrophysicsISM: supernova remnantsPhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Accretion (meteorology)010308 nuclear & particles physicsAstronomy and AstrophysicsSupernovae: individual: Cassiopeia AX-rays: ISMCassiopeia ASupernovaNeutron starSpace and Planetary ScienceInstabilitiesHydrodynamicsAstrophysics - High Energy Astrophysical Phenomena
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