2011ApJ...729L..14L


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.27CEST09:37:54

2011ApJ...729L..14L - Astrophys. J., 729, L14 (2011/March-1)

Cosmological-model-independent tests for the distance-duality relation from galaxy clusters and type Ia supernova.

LI Z., WU P. and YU H.

Abstract (from CDS):

We perform a cosmological-model-independent test for the distance-duality (DD) relation η(z) = DL(z)(1 + z)–2/DA(z), where DL and DA are the luminosity distance and angular diameter distance, respectively, with a combination of observational data for DL taken from the latest Union2 SNe Ia and that for DA provided by two galaxy cluster samples compiled by De Filippis et al. and Bonamente et al. Two parameterizations for η(z), i.e., η(z) = 1 + η0 z and η(z) = 1 + η0z/(1 + z), are used. We find that the DD relation can be accommodated at 1σ confidence level (CL) for the De Filippis et al. sample and at 3σ CL for the Bonamente et al. sample. We also examine the DD relation by postulating two more general parameterizations: η(z) = η0+ η1 z and η(z) = η0 + η1z/(1 + z), and find that the DD relation is compatible with the results from the De Filippis et al. and the Bonamente et al. samples at 1σ and 2σ CLs, respectively. Thus, we conclude that the DD relation is compatible with present observations.

Abstract Copyright:

Journal keyword(s): cosmic background radiation - distance scale - galaxies: clusters: general - supernovae: general - X-rays: galaxies: clusters

Status at CDS:  

Simbad objects: 13

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Number of rows : 13

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ACO 68 ClG 00 37 06.2 +09 09 33           ~ 156 0
2 ACO 267 ClG 01 52 41.96 +01 00 25.6           ~ 199 0
3 ACO 520 ClG 04 54 19.0 +02 56 49           ~ 379 0
4 ACO 586 ClG 07 32 20.3 +31 37 58           ~ 153 0
5 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 401 0
6 ClG J1226+3332 ClG 12 26 57.7 +33 32 50           ~ 194 0
7 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1017 0
8 ACO 1914 ClG 14 26 01.3 +37 49 36           ~ 272 0
9 ACO 2111 ClG 15 39 40.9 +34 25 04           ~ 159 0
10 ACO 2163 ClG 16 15 34.1 -06 07 26           ~ 519 0
11 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 779 1
12 ACO 2259 ClG 17 20 09.2 +27 40 09           ~ 97 0
13 ACO 2261 ClG 17 22 28.3 +32 09 13           ~ 281 0

    Equat.    Gal    SGal    Ecl

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2020.05.27-09:37:54

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