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Hellings and Downs curve. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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English
Etymology
Named after R.W. Hellings and G.S. Downs, who first calculated it.
Noun
Hellings and Downs curve (plural Hellings and Downs curves)
- (astronomy) A graph of the expected correlation of timing effects on pulsars due to cosmological gravitational waves, as a function of angle of separation of the pulsars.