On the Bel radiative gravitational fields
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Publication:2885426
DOI10.1088/0264-9381/29/7/075012zbMATH Open1241.83032arXiv1111.2755OpenAlexW2093799199MaRDI QIDQ2885426
Author name not available (Why is that?)
Publication date: 23 May 2012
Published in: (Search for Journal in Brave)
Abstract: We analyze the concept of intrinsic radiative gravitational fields defined by Bel and we show that the three radiative types, N, III and II, correspond with the three following different physical situations: {it pure radiation}, {it asymptotic pure radiation} and {it generic} (non pure, non asymptotic pure) {it radiation}. We introduce the concept of {em observer at rest} with respect to the gravitational field and that of {em proper super-energy} of the gravitational field and we show that, for non radiative fields, the minimum value of the relative super-energy density is the proper super-energy density, which is acquired by the observers at rest with respect to the field. Several {it super-energy inequalities} are also examined.
Full work available at URL: https://arxiv.org/abs/1111.2755
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