Magnetorotational Mechanism of the Explosion of Core-Collapse Supernovae

Abstract

The idea of the magnetorotational explosion mechanism is that the energy of rotation of the neutron star formed in the course of a collapse is transformed into the energy of an expanding shock wave by means of a magnetic field. In the two-dimensional case, the time of this transformation depends weakly on the initial strength of the poloidal magnetic field because of the development of a magnetorotational instability. Differential rotation leads to the twisting and growth of the toroidal magnetic-field component, which becomes much stronger than the poloidal component. In the case where the initial configuration of the magnetic field is close to a dipole configuration, the ejection of matter has a jet character, whereas, in the case of a quadrupole configuration, there arises an equatorial ejection. In either case, the energy release is sufficient for explaining the observed average energy of supernova explosion. Neutrinos are emitted as the collapse and the formation of a rapidly rotating neutron star proceeds. In addition, neutrino radiation arises in the process of magnetorotational explosion owing to additional rotational-energy losses. In order to explain an interval of 4.5 hours between the two observed neutrino signals from SN 1987A, it is necessary to assume a weakening of the magnetorotional instability and a small initial magnetic field (10(9)-10(10)G) in the newly formed rotating neutron star. The existence of a black hole in the SN 1987A remnant could explain the absence of any visible pointlike source at the center of the explosion.

arXiv comment14 pages, 15 figures

References in corpus (13)

• Explosion Mechanisms of Core-Collapse Supernovae
• Relativistic Equation of State of Nuclear Matter for Supernova and Neutron Star
• The Vela Pulsar and its Synchrotron Nebula
• A large scale dynamo and magnetoturbulence in rapidly rotating core-collapse supernovae
• Evidence for alignment of the rotation and velocity vectors in pulsars
• Magnetorotational supernovae
• Gravitational Wave Signatures of Magnetohydrodynamically-Driven Core-Collapse Supernova Explosions
• Magneto-driven Shock Waves in Core-Collapse Supernova
• Asymmetric neutrino emision and formation of rapidly moving pulsars
• Evidence for alignment of the rotation and velocity vectors in pulsars. II. Further data and emission heights
• A Rotating Collapsar and Possible Interpretation of the LSD Neutrino Signal from SN 1987A
• Pulsar Spin--Velocity Alignment: Further Results and Discussion
• Effects of Resistivity on Magnetized Core-Collapse Supernovae

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