2001ApJ...559..572O

Query : 2001ApJ...559..572O

2001ApJ...559..572O - Astrophys. J., 559, 572-583 (2001/October-1)

Probing the core structure of dark halos with tangential and radial arc statistics.

OGURI M., TARUYA A. and SUTO Y.

Abstract (from CDS):

We study the arc statistics of gravitational lensing generated by dark matter halos in order to probe their density profile. We characterize the halo profile by two parameters, the inner slope of the central cusp α and the median amplitude of the concentration parameter, c_norm, for a halo of mass 10¹⁴ h^–1 M_☉ at z=0 and compute the numbers of tangential and radial arcs produced by gravitational lensing of galaxy clusters. We find that the number of arcs divided by the number of halos is a good statistic that is sensitive to both c_norm and α with very weak dependence on the cosmological parameters. If arc samples with well-defined selection criteria for the clusters become available, one can strongly constrain both c_norm and α. While our tentative comparison with the existing observational data indicates that the inner density profile of dark halos is indeed as steep as predicted by recent simulations (α∼1.5), homogeneous samples of tangential and radial arcs are required for more quantitative discussions.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Theory - Cosmology: Dark Matter - Galaxies: Clusters: General - Galaxies: Halos - Cosmology: Gravitational Lensing

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	ZwCl 0024+1652	ClG	00 26 35.6	+17 09 32			18.35			~	648	1

Query : 2001ApJ...559..572O

Basic data :

ZwCl 0024+1652 -- Cluster of Galaxies

ClG (2012MNRAS,ZwCl,...), gLe (2001ApJ), X (2E,XMMU), C?G (XCLASS)

00 26 35.6 +17 09 32 (X-ray) [ ] E 2021A&A...652A..12K

00 23 59.6 +16 52 56 [ ]

114.4800 -45.3047 [ ]

V(km/s) 96269 [~] / z(spectroscopic) 0.3950 [~] / cz 118418 [~] (Opt) D 2021A&A...652A..12K

4.55 4.55 0 (Xray) E 2016MNRAS.463.1929M

V 18.35 [~] E ~

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`ZwCl 0024+1652`	`ClG 0024+17`	`2E 0024.0+1653`	`XMMXCS J002635.9+170930.7`
`ACT-CL J0026.5+1709`	`ClG 0024.0+1654`	`2E 87`	`XMMXCS J002635.8+170930.5`
`BAX 006.6500+17.1434`	`ClG 0024.0+1652`	`HMS 0024+1654`	`ZwCl 457-28`
`ClG 0024+16`	`ClG 0024+1652`	`XCLASS 377`	`[F81] 13`
`ClG 0024+1654`	`ClG 0024.5+1653`	`XMMU J002635.5+170932`	`[RRB2014] RM J002635.7+170943.1`

References (648 between 1850 and 2026) (Total 648)
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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2E 87

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