1 citations · 3 across the 8 of their papers we have counts for
8 papers
Reissner exterior and interior
Rainer Burghardt
The Reissner-Nordstroem metric is re-examined and supplemented with an interior solution. Both metrics are embedded in a 5-dimensional flat space.
Kerr interior surfaces
Rainer Burghardt
A recently found interior for the Kerr metric is re-investigated by means of geometrical methods. A surface with nonholonomicity is matched to the surface of the exterior solution.
A Kerr interior
Rainer Burghardt
An exact solution of the Einstein field equations is proposed which represents a differentially rotating fluid. As this solution matches the exterior Kerr solution and reduces to t…
The onefold truth
Rainer Burghardt
Some features of the Schwarzschild and Kruskal metric are being discussed under the assumption that the Schwarzschild model can be explained geometrically.
Freely falling observers
Rainer Burghardt
We show that the field equations of the Schwarzschild geometry are invariant under passive Lorentz transformations to a freely falling system. We decompose the field equations with…
New embedding of Schwarzschild geometry. II. Interior solution
R. Burghardt
We embed the Schwarzschild interior solution in a five-dimensional flat space and show that the systems of the interior and the exterior solution are based on the same geometrical…