Spherical orbits around a Kerr black hole

When a particle orbits around a rotating Kerr black hole, it can trace out a complicated, non-planar trajectory. A special class of these orbits... read more

New asymptotically flat gravitational instantons

Gravitational instantons are solutions to the Einstein equations with Euclidean signature that are completely regular. They have applications... read more

A new form of the C-metric

The C-metric is a solution to the Einstein equations, discovered in 1918, that describes a black hole undergoing a uniform acceleration. The traditional form of this solution... read more

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