A page from the Cambridge Encyclopedia of Astronomy.
“6.7: Successive pulses from the first pulsar discovered, CP 1919 are here superimposed vertically. The pulses occur every 1.337 seconds. They are caused by a rapidly spinning neutron star”
The image actually first appeared in the January 1971 edition of Scientific American (here’s the page with the graph) - It also appeared here in Graphis Diagrams in 1973. (which interestingly is on sale for $395)
For a closer look at the potential ‘artist’ of the diagram and the hazy copyright implications, check out Adam Capriola’s excellent bit of ‘internet sleuthing’.
(via jesuisperdu)
