2013ApJ...777L..24Y

Query : 2013ApJ...777L..24Y

2013ApJ...777L..24Y - Astrophys. J., 777, L24 (2013/November-2)

An improved method to test the distance-duality relation.

YANG X., YU H.-R., ZHANG Z.-S. and ZHANG T.-J.

Abstract (from CDS):

Many researchers have performed cosmological-model-independent tests for the distance-duality (DD) relation. Theoretical work has been conducted based on the results of these tests. However, we find that almost all of these tests were perhaps not cosmological-model-independent after all, because the distance moduli taken from a given type Ia supernovae (SNe Ia) compilation are dependent on a given cosmological model and Hubble constant. In this Letter, we overcome these defects and by creating a new cosmological-model-independent test for the DD relation. We use the original data from the Union2 SNe Ia compilation and the angular diameter distances from two galaxy cluster samples compiled by De Filippis et al. and Bonamente et al. to test the DD relation. Our results suggest that the DD relation is compatible with observations, and the spherical model is slightly better than the elliptical model at describing the intrinsic shape of galaxy clusters if the DD relation is valid. However, these results are different from those of previous work.

Abstract Copyright: ∼

Journal keyword(s): distance scale - galaxies: clusters: general - supernovae: general

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	ClG J1226+3332	ClG	12 26 57.7	+33 32 50						~	228	0

Query : 2013ApJ...777L..24Y

Basic data :

ClG J1226+3332 -- Cluster of Galaxies
Other object types:	`ClG (2007ApJS,ClG,...)`, `X (RX,WARPS,...)`, `gLe (2015ApJ)`, `C?G (2016A&A,XCLASS)`, `Rad (FIRST)`
ICRS coord. (ep=J2000) :	`12 26 57.7 +33 32 50 (X-ray) [ 20000 20000 90 ] E 2007ApJS..172..561B`
FK4 coord. (ep=B1950 eq=1950) :	`12 24 28.9 +33 49 26 [ 20000 20000 90 ]`
Gal coord. (ep=J2000) :	`160.8699 +81.6917 [ 20000 20000 90 ]`
Radial velocity / Redshift / cz :	`V(km/s) 168869 [~] / z(spectroscopic) 0.892 [~] / cz 267415 [~] D 2001ApJ...548L..23E`
Angular size (arcmin):	`5.833333492 5.833333492 0 (Xray) E` `2021A&A...652A..12K`

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`ClG J1226+3332`	`MCXC J1226.9+3332`	`WARPS J1226.9+3332`	`XMMXCS J1226.9+3332`
`BAX 186.7417+33.5484`	`PSZ2 G160.83+81.66`	`1WGA J1226.9+3332`	`[B2017] 1472`
`BMW-HRI J122657.3+333253`	`PSZRX G160.86+81.66`	`XBS J122658.1+333246`	`[BVH2007] 154`
`ClG J1226.9+3332`	`RXC J1226.9+3332`	`XCLASS 23324`	`[R97] NGC 4395 7`
`FIRST J122658.1+333248`	`RX J1226.9+3332`	`XMMXCS J122658.1+333250.9`

References (228 between 1850 and 2026) (Total 228)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : ClG J1226+3332

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FIRST J122658.1+333248 RXC J1226.9+3332

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