Kerrrelated

Kerrrelated is an adjective used in physics and mathematics to describe concepts, results, or objects that arise from or relate to the work of Roy P. Kerr, particularly his solution to Einstein's field equations for rotating black holes, known as the Kerr metric.

The Kerr metric describes spacetime around a rotating uncharged mass. It generalizes the Schwarzschild solution to rotation and features frame dragging, an ergosphere, and horizons (outer event horizon and inner Cauchy horizon). It depends on mass M and angular momentum per unit mass a, and it reduces to Schwarzschild in the non-rotating limit.

In scholarly writing, Kerrrelated terms classify ideas that derive from or rely on Kerr geometry. Examples include Kerr-Newman (rotating, charged black holes), Kerr-Schild coordinates, and studies of rotating accretion disks, gravitational lensing, and gravitational radiation in Kerr spacetimes.

In astrophysical observations, Kerrrelated models underpin analyses of supermassive black holes such as those imaged by the Event Horizon Telescope, where the Kerr geometry provides a benchmark for interpreting the shadow and surrounding emission.

The term is used primarily in relativity, black hole physics, and related fields, serving as shorthand for properties, calculations, or phenomena that are best described within the Kerr metric framework. See also Kerr metric, Roy Kerr, frame dragging, ergosphere, Kerr-Newman, and Kerr-Schild.