Q&A: Supernova Remnants and Neutron Stars

Q:
Has anyone been able to dertermine what is at the center of supernova remnant 1987A?

A:
Despite intensive searches, no object has been found to date at the center of SN 1987A. This could be because the pulsar is not pointed in our direction, or because a black hole was formed that is quiescent because there is no matter available for it to accrete, or ....