Probing cosmic acceleration by strong gravitational lensing systems. (arXiv:1901.09144v1 [astro-ph.CO])
<a href="http://arxiv.org/find/astro-ph/1/au:+Tu_Z/0/1/0/all/0/1">Z. L. Tu</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hu_J/0/1/0/all/0/1">J. Hu</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wang_F/0/1/0/all/0/1">F. Y. Wang</a> (NJU)

Recently, some divergent conclusions about cosmic acceleration were obtained
using type Ia supernovae (SNe Ia), with opposite assumptions on the intrinsic
luminosity evolution. In this paper, we use strong gravitational lensing
systems to probe the cosmic acceleration. Since the theory of strong
gravitational lensing is established certainly, and the Einstein radius is
determined by stable cosmic geometry. We study two cosmological models,
$Lambda$CDM and power-law models, through 152 strong gravitational lensing
systems, incorporating with 30 Hubble parameters $H(z)$ and 11 baryon acoustic
oscillation (BAO) measurements. Bayesian evidence are introduced to make a
one-on-one comparison between cosmological models. Basing on Bayes factors $ln
B$ of flat $Lambda$CDM versus power-law and $R_{h}=ct$ models are $ln B>5$,
we find that the flat $Lambda$CDM is strongly supported by the combination of
the datasets. Namely, an accelerating cosmology with non power-law expansion is
preferred by our numeration.

Recently, some divergent conclusions about cosmic acceleration were obtained
using type Ia supernovae (SNe Ia), with opposite assumptions on the intrinsic
luminosity evolution. In this paper, we use strong gravitational lensing
systems to probe the cosmic acceleration. Since the theory of strong
gravitational lensing is established certainly, and the Einstein radius is
determined by stable cosmic geometry. We study two cosmological models,
$Lambda$CDM and power-law models, through 152 strong gravitational lensing
systems, incorporating with 30 Hubble parameters $H(z)$ and 11 baryon acoustic
oscillation (BAO) measurements. Bayesian evidence are introduced to make a
one-on-one comparison between cosmological models. Basing on Bayes factors $ln
B$ of flat $Lambda$CDM versus power-law and $R_{h}=ct$ models are $ln B>5$,
we find that the flat $Lambda$CDM is strongly supported by the combination of
the datasets. Namely, an accelerating cosmology with non power-law expansion is
preferred by our numeration.

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