SNIa data to probe the Cosmological Principle

Simple item page
dc.creatorCélérier, Marie-Noëlle
dc.date2000-06-20
dc.date.accessioned2026-07-07T06:31:46Z
dc.date.available2026-07-07T06:31:46Z
dc.descriptionRecently collected SNIa data have been used to address the problem of measuring the cosmological parameters of the universe. Analysed in the framework of homogeneous models, they have yielded, as a primary result, a strictly positive cosmological constant. However, a straight reading of the published measurements, conducted with no a priori idea of which model would best describe our universe, at least up to redshifts z=1, does not exclude the possibility of ruling out the Cosmological Principle - and cosmological constant - hypotheses. It is here shown how the large scale (in)homogeneity of this part of the universe can be tested on our past light cone, using the magnitude-redshift relation, provided sufficiently accurate data from sources at redshifts approaching z=1 would be available.
dc.description4 LaTex pages, to be published in the Proceedings of the XXXVth Rencontres de Moriond, Energy Densities in the Universe, Editions Frontieres, 2000
dc.identifierhttps://arxiv.org/abs/astro-ph/0006273
dc.identifierhttp://arxiv.org/abs/astro-ph/0006273
dc.identifierProceedings of the XXXVth Rencontres de Moriond, Energy Densities in the Universe, eds J. Tran Thanh Van, R. Ansari and Y. Giraud-Heraud (2002) The Gioi Publishers (Vietnam), p.171-174
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/98703
dc.subjectAstrophysics
dc.titleSNIa data to probe the Cosmological Principle
dc.typetext

Files

Collections

arXiv