Legacy data and cosmological constraints from the angular-size/redshift relation for ultracompact radio sources

John Jackson, Adrian Jannetta

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Sequel to Jackson (2004); uses web-based resources to update the data set with respect to both redshift and radio information, thus doubling the sample size. Cosmological parameters determined using this extended set show that the approach is robust. Examines the dark energy equation-of-state and its evolution, using our data in combination with SNe Ia magnitudes; the two data sets are complementary with respect to their redshift ranges. We conclude that dark energy represented by a simple cosmological constant is compatible with all the data. JCAP is one of the world’s leading astrophysical journals, impact factor 6.2.
Original languageEnglish
Pages (from-to)1-17
JournalJournal of Cosmology and Astroparticle Physics
Volume11
DOIs
Publication statusPublished - Nov 2006

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