A 700 Year-old Pulsar in the Supernova Remnant Kesteven 75

Since their discovery 30 years ago, pulsars have been understood to be neutron stars born rotating rapidly (~10-100 ms). These neutron stars are thought to be created in supernova explosions involving massive stars, which give rise to expanding supernova remnants (SNRs). With over 220 Galactic SNRs known and over 1200 radio pulsars detected, it is quite surprising that few associations between the two populations have been identified with any …