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• W3101848049 abstract "In the standard flat cosmological constant ($Lambda$) cold dark matter (CDM) cosmology, a model of two populations of lens halos for strong gravitational lensing can reproduce the results of the Jodrell-Bank VLA Astrometric Survey (JVAS) and the Cosmic Lens All-Sky Survey (CLASS) radio survey. In such a model, lensing probabilities are sensitive to three parameters: the concentration parameter $c_1$, the cooling mass scale $M_mathrm{c}$ and the value of the CDM power spectrum normalization parameter $sigma_8$. The value ranges of these parameters are constrained by various observations. However, we found that predicted lensing probabilities are also quite sensitive to the flux density (brightness) ratio $q_{mathrm{r}}$ of the multiple lensing images, which has been, in fact, a very important selection criterion of a sample in any lensing survey experiments. We re-examine the above mentioned model by considering the flux ratio and galactic central Super Massive Black Holes (SMBHs), in flat, low-density cosmological models with different cosmic equations of state $omega$, and find that the predicted lensing probabilities without considering $q_{mathrm{r}}$ are over-estimated. A low value of $q_mathrm{r}$ can be compensated by raising the cooling mass scale $M_mathrm{c}$ in fitting the predicted lensing probabilities to JVAS/CLASS observations. In order to determine the cosmic equation of state $omega$, the uncertainty in $M_mathrm{c}$ must be resolved. The effects of SMBHs cannot be detected by strong gravitational lensing method when $q_{mathrm{r}}leq 10$." @default.
• W3101848049 created "2020-11-23" @default.
• W3101848049 creator A5068159241 @default.
• W3101848049 date "2004-04-09" @default.
• W3101848049 modified "2023-09-27" @default.
• W3101848049 title "Flux-limited strong gravitational lensing and dark energy" @default.
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• W3101848049 doi "https://doi.org/10.1051/0004-6361:20040049" @default.
• W3101848049 hasPublicationYear "2004" @default.
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