Definitions for "Binary pulsar"
Keywords:  pulsar, companion, pulse, star, neutron
a binary star system (a system where two stars orbit each other), where one of the two is a pulsar
a pulsar in orbit with another star, the existence of the companion revealed by a cyclic change in the pulse period as the two stars orbit each other
a small and dense neutron star with two heavy bodies that rotate around each other at high speed and emit regular pulses of polarized radiation