On the energy of a null cone
arXiv:1405.6102 · doi:10.1088/0264-9381/31/23/235011
Abstract
We derive a formula for the Bondi mass aspect in terms of asymptotic data of the Bondi-Sachs metric in the affine gauge. We prove the positivity of the total energy of a regular null cone in agreement with a recent result of Chruściel and Paetz.
8 pages