An acoustic mechanism for core-collapse supernova explosions
نویسندگان
چکیده
منابع مشابه
Features of the Acoustic Mechanism of Core-collapse Supernova Explosions
In the context of 2D, axisymmetric, multi-group, radiation/hydrodynamic simulations of corecollapse supernovae over the full 180 domain, we present an exploration of the progenitor dependence of the acoustic mechanism of explosion. All progenitor models we have tested with our Newtonian code explode. However, some of the cores left behind in our simulations, particularly for the more massive pr...
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We investigate the criteria for successful core-collapse supernova explosions by the neutrino mechanism. We find that a critical-luminosity/mass-accretion-rate condition distinguishes non-exploding from exploding models in hydrodynamic one-dimensional (1D) and two-dimensional (2D) simulations. We present 95 such simulations that parametrically explore the dependence on neutrino luminosity, mass...
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In this paper, we present a new mechanism for core-collapse supernova explosions that relies upon acoustic power generated in the inner core as the driver. In our simulation using an 11-M⊙ progenitor, an advective-acoustic oscillation à la Foglizzo with a period of ∼25−30 milliseconds (ms) arises ∼200 ms after bounce. Its growth saturates due to the generation of secondary shocks, and kinks in ...
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I examine a mechanism by which two fast narrow jets launched by a newly formed neutron star (NS), or a black hole (BH), at the center of a core collapse supernovae (CCSN), form two slow massive wide (SMW) jets. Such SMW jets are assumed as initial conditions in some numerical simulations that demonstrate that SMW jets can expel the rest of the collapsing star. The original fast narrow jets must...
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The discrete kinetic model is used to study the propagation of sound waves in system of hard-disk-like rotating stars (or vortex gases). The anomalous (negative) attenuation or amplification which is possibly due to the binary collision of a dilute-enough rotating disk (or vortex-gas) system (each with opposite-sign rotating direction or angular momenta but the total (net) angular momenta or vo...
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ژورنال
عنوان ژورنال: New Astronomy Reviews
سال: 2006
ISSN: 1387-6473
DOI: 10.1016/j.newar.2006.06.046