Observations
X-ray pulsars are observed using X-ray telescopes that are satellites in low Earth orbit although some observations have been made, mostly in the early years of X-ray astronomy, using detectors carried by balloons or sounding rockets.
Discovered in 1968, the Crab pulsar was the first to be connected with a supernova remnant. The first X-ray pulsar to be discovered from its X-Ray emission alone was Centaurus X-3, in 1971 with the Uhuru X-ray satellite.
Read more about this topic: X-ray Pulsar
Famous quotes containing the word observations:
“All observations point to the fact that the intellectual woman is masculinized; in her, warm, intuitive knowledge has yielded to cold unproductive thinking.”
—Helene Deutsch (1884–1982)
“The natural historian is not a fisherman who prays for cloudy days and good luck merely; but as fishing has been styled “a contemplative man’s recreation,” introducing him profitably to woods and water, so the fruit of the naturalist’s observations is not in new genera or species, but in new contemplations still, and science is only a more contemplative man’s recreation.”
—Henry David Thoreau (1817–1862)
“Jerry: She’s one of those third-year girls that gripe my liver.
Milo: Third-year girls?
Jerry: Yeah, you know, American college kids. They come over here to take their third year and lap up a little culture. They give me a swift pain.
Milo: Why?
Jerry: They’re officious and dull. They’re always making profound observations they’ve overheard.”
—Alan Jay Lerner (1918–1986)