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

John Jackson

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)1-15
JournalJournal of Cosmology and Astroparticle Physics
Volume11
DOIs
Publication statusPublished - Nov 2004

Fingerprint

Dive into the research topics of 'Tight cosmological constraints from the angular-size/redshift relation for ultra-compact radio sources'. Together they form a unique fingerprint.

Cite this