English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Standard candles are one of the most important tools to study the universe.In this paper, the constraints of standards candles on the cosmologicalparameters are estimated for different cases. The dependence of the constraintson the intrinsic scatter of the luminosity relation and the redshiftdistribution of the standard candles is specifically investigated. The results,especially for the constraints on the components of the universe, clearly showthat constraints from standard candles at different redshifts have differentdegeneracy orientations, thus standard candles with a wide redshiftdistribution can self break the degeneracy and improve the constraintssignificantly. As a result of this, even with the current level of tightness ofknown luminosity relations, gamma-ray bursts (GRBs) can give comparabletightness of constraint with type Ia supernovae (SNe Ia) on the components ofthe universe as long as the redshifts of the GRBs are diversifying enough.However, for a substantial constraint on the dark energy EOS, tighterluminosity relations for GRBs are needed, since the constraints on the darkenergy from standard candles at high redshifts are very weak and are thus lesshelpful in the degeneracy breaking.

Intrinsic scatter of the luminosity relation, redshift distribution of the standard candles, and the constraining capability