146 citations · 524 across the 9 of their papers we have counts for
10 papers
Probing homogeneity with standard candles
Hsu Wen Chiang, Antonio Enea Romano, Fabien Nugier +1
We show that standard candles can provide some valuable information about the density contrast, which could be particularly important at redshifts where other observations are not…
From GLC to double-null coordinates and illustration with static black holes
Fabien Nugier
We present a system of coordinates deriving directly from the so-called Geodesic Light-Cone (GLC) coordinates and made of two null scalars intersecting on a 2-dimensional sphere pa…
Geodesic-light-cone coordinates and the Bianchi I spacetime
Pierre Fleury, Fabien Nugier, Giuseppe Fanizza
The geodesic-light-cone (GLC) coordinates are a useful tool to analyse light propagation and observations in cosmological models. In this article, we propose a detailed, pedagogica…
The Geodesic Light-Cone Coordinates, an Adapted System for Light-Signal-Based Cosmology
Fabien Nugier
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 "geodesi…
Lightcone Averaging and Precision Cosmology
Fabien Nugier
The first objective of this thesis is to fill the lack in cosmology of a description on the past light cone: the null hypersurface on which observed signals propagate. Its second g…
Average and dispersion of the luminosity-redshift relation in the concordance model
I. Ben-Dayan, M. Gasperini, G. Marozzi +2
Starting from the luminosity-redshift relation recently given up to second order in the Poisson gauge, we calculate the effects of the realistic stochastic background of perturbati…