SN 1987A

We now believe that SN 1987A arose from the merger of a massive binary star system. The most dramatic evidence for this is the bright circumstellar ring, beautifully imaged by the Hubble Space Telescope (HST). Material that flowed out during the red supergiant phase was subsequently compressed by the blue supergiant wind to form the ring. This, together with the fainter outer loops, was then "lit-up" (ionized) by the ultraviolet flash as the shock of the explosion reached the surface of the star. While the progenitor of SN 1987A may have been unusual, it was not unique. A rather similar system has been recently discovered in our own Galaxy.

That there was a core-collapse in the star was firmly, and uniquely established by the detection of 19 neutrinos on 23 February 1987. It seems likely that the collapse resulted initially in a neutron star at the centre. However, there is still no convincing evidence for a pulsar at the centre. Indeed, the possibility that the core subsequently collapsed to form a black hole is still being considered. Understanding is growing as to how the core-collapse ultimately leads to the powerful ejection of most of the star. The key lies in the neutrinos, which emerge from the neutron star following the core-collapse. These particles can deposit a large amount of energy in the material just above the neutron star, producing instabilities and coupling the released gravitational energy to the star's outer layers. Observational evidence supporting this scenario has come from infrared spectra of SN1987A. However, it is still not understood what determines the fraction of neutrino energy that is actually deposited.Good on you!

Just because I dont immediately applaud your analysis, and send someother explaination, doesnt mean I disagree or that I dont enjoy your ideas, ...welcome to science. 

The missing nuetron star led to the independant hypothesis that the big bang explosion took place when a nuetron core exploded out of a singularity that formed under the unique gravity and thermonuclear energy of the big crunch.