What’s a pulsar? Why does it pulse?
earthsky.org
What’s a pulsar? Why does it pulse?
A pulsar is a neutron star with its poles aimed toward Earth so that we can see the pulse of light resulting from the star's rapid spin and magnetic field.
2022年7月15日
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Pulsar: A pulsar (pulsating star, on the model of quasar) is a highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic poles. This radiation can be observed only when a beam of emission is pointing toward Earth (similar to the way a lighthouse can be seen only when the light is pointed in the direction of an observer), and is responsible for the pulsed appearance of emission. Neutron stars are very dense and have short, regular rotational periods
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