A closed-form hypergeometric and Taylor treatment of dark-energy and Cardassian distance integrals is fitted to SN and GRB data, but the key integral identity and the data treatment are flawed.
Observational Constraints on Cosmological Models with the Updated Long Gamma-Ray Bursts
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
In the present work, by the help of the newly released Union2 compilation which consists of 557 Type Ia supernovae (SNIa), we calibrate 109 long Gamma-Ray Bursts (GRBs) with the well-known Amati relation, using the cosmology-independent calibration method proposed by Liang {\it et al.}. We have obtained 59 calibrated high-redshift GRBs which can be used to constrain cosmological models without the circularity problem (we call them ``Hymnium'' GRBs sample for convenience). Then, we consider the joint constraints on 7 cosmological models from the latest observational data, namely, the combination of 557 Union2 SNIa dataset, 59 calibrated Hymnium GRBs dataset (obtained in this work), the shift parameter $R$ from the WMAP 7-year data, and the distance parameter $A$ of the measurement of the baryon acoustic oscillation (BAO) peak in the distribution of SDSS luminous red galaxies. We also briefly consider the comparison of these 7 cosmological models.
citation-role summary
dataset 1
citation-polarity summary
fields
astro-ph.CO 1years
2019 1verdicts
REJECT 1roles
dataset 1polarities
use dataset 1representative citing papers
citing papers explorer
-
The distance modulus in dark energy and Cardassian cosmologies via the hypergeometric function
A closed-form hypergeometric and Taylor treatment of dark-energy and Cardassian distance integrals is fitted to SN and GRB data, but the key integral identity and the data treatment are flawed.