Answer the following question given this paragraph: 

A pulsar is a rotating neutron star that emits radiation in pulses. A pulsar can only be seen when the beam is pointing toward Earth. Pictured below is a nebular that looks like a cosmic hand ( Figure below ). There is a bright swirl of gas in the wrist of the hand. A very tiny but bright neutron star is in the center of that swirl.


Q: What kinds of neutron stars emit radiation in pulses?


A:
pulsars