Peter Scheuer

Peter August Georg Scheuer (31 March 1930 – 21 January 2001) was a German-born British astrophysicist and radio astronomer, who made major contributions in theory and observation to extragalactic astronomy and cosmology. In particular, he created the P(D) method that allowed number counts of extragalactic radio sources to be estimated in the presence of source confusion; he independently proposed the Gunn-Peterson trough as a means of detecting intergalactic neutral hydrogen; he produced some of the earliest arguments for ejection of relativistic jets from the centres of active galaxies and quasars. Provided by Wikipedia