Assertion: crab pulsar | /r/HasProperty | detected by stroboscopic techniques
Facets:
value: after its discovery in radio waves
type: TEMPORAL
value: in 1969
type: TEMPORAL
value: at the steward observatory
type: LOCATION
Source sentences:
text: There are very few of these known: the Crab pulsar was detected by stroboscopic techniques in 1969, shortly after its discovery in radio waves, at the Steward Observatory.