Pulsars could not be pulsating stars because the pulses are too short.

Question

Quizplus · Accepted Answer

Pulsars are actually rapidly rotating neutron stars that emit beams of electromagnetic radiation from their magnetic poles. These beams are observed as pulses of radiation when the beam sweeps past the Earth. The duration of a pulsar pulse can range from a fraction of a millisecond to several seconds, but in any case, they are much shorter than the periods of pulsating stars, which can be hours or even days. Therefore, pulsars cannot be pulsating stars because the pulses are too short.

Pulsars Could Not Be Pulsating Stars Because the Pulses Are