2012A&A...538A..43C


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.21CEST19:42:26

2012A&A...538A..43C - Astronomy and Astrophysics, volume 538A, 43-43 (2012/2-1)

Constraints on cosmological models from lens redshift data.

CAO S. and ZHU Z.-H.

Abstract (from CDS):

Strong-lensing has developed into an important astrophysical tool for probing cosmology and galaxies (their structures, formations, and evolutions). Now several hundreds of strong-lens systems produced by massive galaxies have been discovered, which may form well-defined samples useful for statistical analyses. We aim to collect relatively complete lens-redshift data from various large systematic surveys of gravitationally lensed quasars and check the possibility of using these as a future supplement to other cosmological probes. We use the distribution of gravitationally-lensed image separations observed in the Cosmic Lens All-Sky Survey (CLASS), the PMN-NVSS Extragalactic Lens Survey (PANELS), the Sloan Digital Sky Survey (SDSS) and other surveys, considering a singular isothermal ellipsoid (SIE) model for galactic potentials as well as improved new measurements of the velocity dispersion function of galaxies based on the SDSS DR5 data and recent semi-analytical modeling of galaxy formation to constrain two dark-energy models (ΛCDM and constant w) under a flat universe assumption. We find that the current lens-redshift data yield a relatively weak constraint on the model parameter ΩΛ=0.85+0.11–0.18 for the simplest cosmological constant model. However, by combing the redshift data with the cosmic macrowave background data, we obtain ΩΛ=0.78+0.02–0.03; by combing the redshift data with the baryonic acoustic oscillation peak and the comic macrowave background data, we obtain a more stringent result: ΩΛ=0.75+0.02–0.02. We obtain w←0.52 at 68.3% CL with the lens-redshift data for the constant w of a dynamical dark-energy model, therefore, the current quintessence dark-energy model is still included at 1σ and a super-negative equation of state is not necessarily favored by this strong lensing data. We notice that the joint data can also provide a good fit with Ωx=0.80+0.17–0.17, w=-1.12+0.57–1.88 and Ωx=0.71+0.07–0.07, w=-0.78+0.22–0.34, respectively, which agree with the flat Λ CDM model at 1σ.

Abstract Copyright:

Journal keyword(s): gravitational lensing: strong - cosmological parameters - dark energy

Simbad objects: 36

goto Full paper

goto View the reference in ADS

Number of rows : 36

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 CLASS B0128+437 Rad 01 31 +44.0           ~ 55 0
2 QSO B0142-100 QSO 01 45 16.5955770048 -09 45 17.269954127   17.23 16.95     ~ 230 1
3 QSO B0218+357 QSO 02 21 05.5 +35 56 14   20.0 20.0 19.60   ~ 515 2
4 [VV2006] J024634.1-082536 QSO 02 46 34.1072517858 -08 25 36.201597772   18.42 18.20 17.94   ~ 47 1
5 4C 05.19 QSO 04 14 37.7673624 +05 34 42.328449   24.100 23.800 21.270   ~ 336 2
6 CLASS B0445+123 G 04 48 +12.4           ~ 23 0
7 CLASS B0631+519 G 06 35 +51.9           ~ 21 0
8 QSO B0712+472 QSO 07 16 03.65 +47 08 50.6     23.0     ~ 105 1
9 CLASS B0739+366 LeQ 07 42 51 +36 34.7           ~ 18 0
10 CLASS B0850+054 G 08 53 +05.2           ~ 25 0
11 QSO B0909+5312 QSO 09 13 01.031 +52 59 28.90   17.29 16.71     ~ 135 1
12 QSO J0924+0219 QSO 09 24 55.8048 +02 19 24.850   18.58 18.36     ~ 113 1
13 8C 0958+561 QSO 10 01 20.6915852239 +55 53 55.595776916   17.16 16.95     ~ 703 3
14 [OIH2005] SDSS J1001+5027 gLS 10 01 28.6 +50 27 57           ~ 14 0
15 QSO B1001+4127 QSO 10 04 34.9236085542 +41 12 42.771226567   19.14 19.03     ~ 171 1
16 [VV2006] J102111.0+491330 QSO 10 21 11.0253 +49 13 30.344   19.49 19.33     ~ 26 1
17 QSO B1030+074 QSO 10 33 34.02429 +07 11 26.1478     20.34 20.22   ~ 101 1
18 QSO B1115+080A QSO 11 18 16.951 +07 45 58.23   16.61 16.44     ~ 638 2
19 [VV2000] J115518.3+193942 QSO 11 55 18.3 +19 39 42   17.15 16.89     ~ 87 2
20 QSO B1208+101 QSO 12 10 57.0378198925 +09 54 27.078644555     17.5     ~ 111 1
21 QSO J1226-0006 QSO 12 26 08.0332 -00 06 02.284   19.03 18.54     ~ 44 1
22 [VV2006] J133222.6+034739 QSO 13 32 22.6294 +03 47 39.912   18.99 18.54     ~ 29 0
23 LBQS 1333+0133 QSO 13 35 34.7882867313 +01 18 05.534612754   18.39 18.17     ~ 51 2
24 QSO B1359+154 QSO 14 01 35.588 +15 13 24.15     21.90     ~ 69 1
25 QSO B1422+2309 BLL 14 24 38.09400 +22 56 00.5900   16.77 15.84 14.79   ~ 423 1
26 [PBW92] 1422+231 gLS 14 24 38.09400 +22 56 00.5900   16.77 15.84 14.79   ~ 355 0
27 [VV2006] J152445.6+440949 QSO 15 24 45.6325 +44 09 49.604   19.98 19.42     ~ 23 0
28 QSO B1600+4344 QSO 16 01 40.4818 +43 16 47.394   22.12 21.92     ~ 178 1
29 NAME 3C 330G2 Sy2 16 09 35.0 +65 56 39   20.33       ~ 260 1
30 SDSS J162026.14+120342.0 QSO 16 20 26.143 +12 03 42.03   20.07 20.07 19.12 18.64 ~ 13 0
31 [VV2006] J163257.6-003302 QSO 16 32 57.6812439 -00 33 21.070974     20.99 20   ~ 53 1
32 [VV2006] J183828.7-342733 QSO 18 38 28.4959787 -34 27 41.768642     19.21     ~ 31 1
33 CLASS B1933+503 Rad 19 34 31.02 +50 25 23.5           ~ 82 1
34 BWE 1938+6641 gLe 19 38 25.32029 +66 48 53.4199           ~ 94 2
35 [VV2000] J204719.3+264340 QSO 20 47 20.3 +26 44 03     20.60     ~ 107 2
36 PKS J2116+0225 Rad 21 16 50.7449472 +02 25 46.270365           ~ 56 2

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2012A&A...538A..43C and select 'bookmark this link' or equivalent in the popup menu


2021.04.21-19:42:26

© Université de Strasbourg/CNRS

    • Contact