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Résumé |
The Bondi gauge is a convenient choice of coordinates and line element to analyze
the asymptotic structure of general relativity and aspects of gravitational
radiation. Over the recent years several relaxations of the boundary conditions
have been proposed, with the aim of understanding how general the asymptotic
structure should be considered, and how large the asymptotic symmetry algebra can
become. After presenting some motivations related to the understanding of charges,
integrability, and flux in the covariant phase space formalism, I will review some
recently proposed relaxations of the Bondi gauge in 3d and 4d gravity. |
