Tight cosmological constraints from the angular-size/redshift relation for ultra-compact radio sources

Jackson, John (2004) Tight cosmological constraints from the angular-size/redshift relation for ultra-compact radio sources. Journal of Cosmology and Astroparticle Physics, 11. pp. 1-15. ISSN 1475-7508

[img]
Preview
PDF (Article)
Jackson JC - Tight cosmological constraints from the angular-size redshift relation for ultra-compact radio sources - postprint.pdf

Download (225kB) | Preview
Official URL: http://dx.doi.org/10.1088/1475-7516/2004/11/007

Abstract

Research in observational cosmology; gives a more refined analysis of data set considered in Jackson & Dodgson (1997), including selection effects and sensitivity to redshift binning. Result is Omega_matter=0.24+0.09/-0.07 in the spatially flat case, in close accord with the most recent WMAP figures (Spergel et al 2007). Presents clear evidence of switch from acceleration to deceleration at a redshift z = 0.85, somewhat higher than the corresponding SNe Ia figure z = 0.46 (Riess 2004). Develops a mathematical/astrophysical model of ultra-compact radio sources, which lends credibility to their status as standard measuring rods.

Item Type: Article
Additional Information: This is an author-created, un-copyedited version of an article accepted for publication in the Journal of Cosmology and Astroparticle Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at 10.1088/1475-7516/2004/11/007.
Uncontrolled Keywords: classical tests, cosmology, dark matter, cosmological, constant experiments
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Mathematics and Information Sciences
Depositing User: EPrint Services
Date Deposited: 20 Nov 2008 15:26
Last Modified: 11 May 2017 07:15
URI: http://nrl.northumbria.ac.uk/id/eprint/1157

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence