Now, it’s widely accepted that a pulsar is a specific type of neutron star-one of three outcomes of a star death. The first pulsar was identified in 1967, and the definition evolved over the next year or so as scientists tried to resolve earlier predictions against rapidly accumulating observations. But what does that mean? What is a pulsar, how do you read the stacked plot, and how was the data collected? When folks refer to the data visualization, they generally just say that it shows a series of radio frequency periods from the first pulsar discovered. in the course working on his PhD dissertation, “Radio Observations of the Pulse Profiles and Dispersion Measures of Twelve Pulsars” (September, 1970). The stacked plot featured on the record was originally created by radio astronomer Harold D. Earlier this year, I reported the punchline of my quest to uncover the story behind the story of Joy Division’s Unknown Pleasures album cover.
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