Kerr finds the rotating solution
Roy Kerr published an exact solution of the vacuum field equations describing the spacetime around a rotating mass, forty-seven years after the static case. Because every collapsing object carries angular momentum, this is the geometry that applies to real black holes; it introduces the ergosphere, frame dragging, an upper bound on spin, and a spin-dependent innermost stable orbit that governs how efficiently accreting matter can radiate.
Historical — it happened, and the record is settled.
Subjects
- The Kerr solution and black hole spin · model · not located
- Innermost stable circular orbit · physical criterion · not located
- The no-hair result · concept · not located
Evidence
Partly verified — Core facts are sourced; some optional detail is deliberately absent.
Gravitational Field of a Spinning Mass as an Example of Algebraically Special Metrics
The exact vacuum solution for a rotating mass, which is the geometry that applies to astrophysical black holes. V55 VERIFICATION BASIS: not consulted in session; no research tool was available. Title, volume and page are from recall and must be checked.
Physical Review Letters · 1963 · Partly verified
Roy P. Kerr, Physical Review Letters 11, 237 (1963)
Recorded on The Kerr solution and black hole spin
Related
Related because they share a subject in the Atlas — never because the text looks similar.