Hubble diagrams in the Jordan and Einstein frames
Sign Up to like & getrecommendations! Published in 2018 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-018-2490-1
Abstract: Different models in cosmology generally predict different Hubble diagrams. Then, the comparison between the Hubble diagrams may be used as a way for distinguishing between different cosmological scenarios. But that is not always the case… read more here.
Keywords: jordan einstein; differentiate two; hubble diagrams; two frames ... See more keywords
The Djorgovski–Gurzadyan dark energy integral equation and the Hubble diagram
Sign Up to like & getrecommendations! Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202039246
Abstract: We consider the observational aspects of the value of dark energy density from quantum vacuum fluctuations based initially on the Gurzadyan-Xue model. We reduce the Djorgovski-Gurzadyan integral equation to a differential equation for the co-moving… read more here.
Keywords: integral equation; hubble diagram; dark; dark energy ... See more keywords
How does the cosmic large-scale structure bias the Hubble diagram?
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2017/03/062
Abstract: The Hubble diagram is one of the cornerstones of observational cosmology. It is usually analysed assuming that, on average, the underlying relation between magnitude and redshift matches the prediction of a Friedmann-Lemaitre-Robertson-Walker model. However, the… read more here.
Keywords: large scale; cosmic large; cosmology; hubble diagram ... See more keywords
Bias and scatter in the Hubble diagram from cosmological large-scale structure
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.021301
Abstract: An important part of cosmological model fitting relies on correlating distance indicators of objects (for example type Ia supernovae) with their redshift, often illustrated on a Hubble diagram. Comparing the observed correlation with a homogeneous… read more here.
Keywords: scatter hubble; diagram cosmological; bias scatter; structure ... See more keywords
Is the Hubble diagram of quasars in tension with concordance cosmology?
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.043502
Abstract: Recently Risaliti \& Lusso [Nature Astron. 3 (2019) 3 272] reported new measurements of the expansion rate of the Universe by constructing the Hubble diagram of 1598 quasars in the redshift range $0.5 read more here.
Keywords: diagram quasars; concordance; tension; hubble diagram ... See more keywords