asymmetric collapsing supernovae explosion with rotation

Abstract

Hydrodynamic processes, by which the collapse of stellar core triggers the supernovae explosion, were studied in detail by numerical solution of axially symmetric problem taking into account fast initial rotation of iron core. Simulations showed the propagation of a strong diverging shock wave with a large asymmetry of explosion and with a total post-shock energy comparable to the characteristic energies of observed supernovae. Physical background for the formulation of the problems under consideration is the rotational explosion scenario for collapsing supernovae. According to this scenario supernovae explosion is preceded by the formation of a close binary system of neutron stars through the fragmentation of a rapidly rotating preneutron star. Such neutron star binary evolves to the point of explosion due to the losses of energy and angular momentum via the emission of gravitational waves in the presence of uniform or toroidal atmosphere -another residual of iron core collapse.