What conclusion might scientists draw if a strong remnant like Tycho's lacks a detectable pulsar?

Answer

The core collapse resulted in a black hole or the neutron star received a kick that ejected it from view

The absence of a visible pulsar in some strong remnants suggests the central object is either a black hole, which provides no bright electromagnetic source, or the neutron star received a significant recoil kick causing it to leave the remnant structure.

What conclusion might scientists draw if a strong remnant like Tycho's lacks a detectable pulsar?
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