The Geodesic Light-Cone Coordinates, an Adapted System for Light-Signal-Based Cosmology
Cosmology and Nongalactic Astrophysics
2015-09-01 v1 General Relativity and Quantum Cosmology
Abstract
Most of cosmological observables are light-propagated. I will present coordinates adapted to the propagation of null-like signals as observed by a geodesic observer. These "geodesic light-cone (GLC) coordinates" are general, adapted to calculations in inhomogeneous geometries, and their properties make them useful for a large spectrum of applications, from the estimation of the distance-redshift relation, the average on our past light cone, the effect of the large-scale structure on the Hubble diagram, to weak lensing calculations.
Cite
@article{arxiv.1508.07464,
title = {The Geodesic Light-Cone Coordinates, an Adapted System for Light-Signal-Based Cosmology},
author = {Fabien Nugier},
journal= {arXiv preprint arXiv:1508.07464},
year = {2015}
}
Comments
8 pages, 3 figures, document prepared for the Fourteenth Marcel Grossmann Meeting