Linked from
The 42 pages that link to Pulsar, each with the reason it gives.
Pulsar wind nebulaNarrower topic: Its rotation supplies the energy that drives the nebula.
X-ray pulsarNarrower topic: X-ray pulsars are pulsars whose periodic signals are detected in X-rays.
SN 1054Narrower topic: The Crab Pulsar reveals the compact remnant through periodic emissions.
Messier 4Narrower topic: A pulsar in Messier 4 provides a precise clock for studying the cluster.