pulsar
pulsar — noun
- pulsarsingular
- pulsarsplural
1. a dense, fast-spinning star in space that gives out regular pulses of radio wave
a dense, fast-spinning star in space that gives out regular pulses of radio waves or other radiation at very short, constant intervals
Dr. Chen detected a new pulsar while scanning the outer regions of the Milky Way.
detect + a pulsar (discovery context)
The research team at the observatory monitors three pulsars every night to study their signals.
monitor + a pulsar (observation context)
A pulsar emits radio waves at such precise intervals that astronomers use them as cosmic clocks.
The Crab Nebula pulsar flashes about thirty times per second and is visible through a large radio telescope.
A retired astronomer spends his weekends studying pulsar data from an online archive.
- neutron star
a broader category; all pulsars are neutron stars, but not all neutron stars are pulsars
文法句型
pulsar + verb (emits, sends, flashes)
discover/detect/observe + a pulsar
用法筆記
Frequently appears in astronomical research contexts alongside terms like neutron star, radio telescope, and electromagnetic radiation.