Scientists find evidence of missing neutron star from SN 1987A
网页链接 ApJ.886.51 Since nobody could find it, different reasons were advanced for why it wasn't there. Some wondered if SN 1987A formed a quark star instead of a neutron star. Another theory suggested that a pulsar was formed instead, and that its magnetic field was small or unusual, preventing us from detecting it. A third possibility was that gas and dust fell back into the neutron star, collapsing it into a black hole. A more prosaic explanation was that it was there, just obscured by so much gas and dust that we can't see it. 现在最后一种解释可能更靠谱了
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