Roy Kerr

Roy P. Kerr
CNZM FRS FRSNZ
Roy P. Kerr CNZM FRS FRSNZ
	Kerr in 2016
Born	16 May 1934; Kurow, New Zealand
Education	St. Andrew's College, Christchurch
Alma mater	University of New Zealand (BSc); University of Cambridge (PhD);
Known for	Kerr metric; Kerr–Newman metric; Kerr–Schild perturbations
Awards	Hector Medal (1982); Hughes Medal (1984); Rutherford Medal (1993); Albert Einstein Medal (2013); Crafoord Prize (2016); Oskar Klein Medal (2020); Dirac Medal (ICTP) (2025)
	Scientific career
Fields	Mathematics
Workplaces	University of Canterbury; Syracuse University
Thesis	Equations of Motion in General Relativity (1960)

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Roy Patrick Kerr CNZM FRS FRSNZ (/kɜːr/; born 16 May 1934) is a New Zealand mathematician who discovered the Kerr geometry, an exact solution to the Einstein field equation of general relativity. His solution models the gravitational field outside an uncharged rotating massive object, including a rotating black hole. His solution to Einstein's equations predicted spinning black holes before they were discovered.