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Einstein equations in the null quasi-spherical gauge

Robert Bartnik
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Abstract

The structure of the full Einstein equations in a coordinate gauge based on expanding null hypersurfaces foliated by metric 2-spheres is explored. The simple form of the resulting equations has many applications -- in the present paper we describe the structure of timelike boundary conditions; the matching problem across null hypersurfaces; and the propagation of gravitational shocks.

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Robert Bartnik. 1997-05-29. Einstein equations in the null quasi-spherical gauge. https://doi.org/10.1088/0264-9381%2F14%2F8%2F017

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