1980/06/01 by Mario Livio, J. R. Buchler, Stirling A. Colgate · 1 citation
Physics and Astronomy · #Astrophysics #Classical mechanics #Equation of state #Gamma-ray bursts and supernovae #Gravitational collapse #Instability #Laser-Plasma Interactions and Diagnostics #Mechanics #Neutrino #Neutrino Physics Research #Nuclear physics #Physics #Rayleigh–Taylor instability #Shock wave #Supernova #Thermodynamics #Type II supernova
paper · doi:10.1086/183274
openalex publication_date 1980/06/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11
A two-dimensional numerical hydrodynamic study shows that a Rayleigh-Taylor unstable gradient, which can develop after the bounce of a collapsing stellar core, gives rise to a dramatic, large-scale l = 2 overturn of the whole core. The unstable pressure gradient in these calculations is artificially weak because the equation of state used causes an early bounce at low density. A more dramatic overturn with greater kinetic and neutrino energy release is to be expected with recent equations of state, given sufficient time to reduce diffusively and convectively any transient shock-produced entropy-stabilizing gradients.