Mechanism of neutron production in supernova explosions.
نویسندگان
چکیده
منابع مشابه
Supernova Explosions and Neutron Star Formation
The current picture of the collapse and explosion of massive stars and the formation of neutron stars is reviewed. According to the favored scenario, however by no means proven and undisputed, neutrinos deposit the energy of the explosion in the stellar medium which surrounds the nascent neutron star. Observations, in particular of Supernova 1987A, suggest that mixing processes play an importan...
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The transition to quark matter can take place in neutron stars. The structure of a hybrid star, containing a core made of quark matter is discussed. The maximum mass of the non-rotating hybrid star turns out to be ∼ 1.6M⊙. Possible signatures of the quark phase as pulsar’s timing, cooling rate etc. are briefly analyzed. The deconfinement transition can also take place during the pre-supernova c...
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It is well established experimentally that highly excited nuclear systems with temperatures T > 3− 5 MeV can be formed in intermediate-energy heavy-ion collisions. Eventually they break up into many fragments with broad mass and charge distributions. These multifragmentation reactions have been intensively investigated in GSI and other world laboratories. It has also been established that a the...
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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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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1958
ISSN: 0004-6256
DOI: 10.1086/107682