Quasar hides its light under a dusty doughnut

henbest, Nigel
June 1991
New Scientist;6/29/91, Vol. 130 Issue 1775, p24
Reports on the discovery of a quasar hidden at the center of Cygnus galaxy. Definition of a quasar; Role of astronomers Martin Ward, Andrew Wilson, Philip Blanco and Ninoru Nishida in identifying the quasar; Use of Great Britain Infrared Telescope in Hawaii in studying the infrared spectral line produced by hydrogen molecules; Effect of the dust in the doughnut on the light from the quasar; Comment of Ward regarding the discovery.


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