The tension on the cosmological parameters from different observational data
Abstract
Planck measurements of the cosmic microwave background power spectra find a lower value of the Hubble constant and a higher value of the fractional matter energy density for the concordance CDM model, and these results are in tension with other measurements. The {\em Planck} group argued that the tension came either from some sources of unknown systematic errors in some astrophysical measurements or the wrong CDM model applied in fitting the data. We studied the reason for the tension on from different measurements by considering two dynamical dark energy models. We found that there is no tension between different data, the constraint on is almost unchanged for different dark energy models and the tension with the local measurements remains when the error bar on is tightened to be around 1. We argue that the tension on is not caused by the fitting model.
Cite
@article{arxiv.1308.5627,
title = {The tension on the cosmological parameters from different observational data},
author = {Qing Gao and Yungui Gong},
journal= {arXiv preprint arXiv:1308.5627},
year = {2014}
}
Comments
full planck data and the JLA supernova data are used, typos corrected, CQG in press