Relating the Newman-Penrose constants to the Geroch-Hansen multipole moments

Abstract

In these proceedings we investigate the relation between the Newman-Penrose constants and the Geroch-Hansen multipole moments for stationary spacetimes. This is short description of the results of the paper [1] published in Classical and Quantum Gravity. This relation gives a simple characterization of which stationary spacetimes have vanishing Newman-Penrose constants. © 2010 IOP Publishing Ltd.