2010MNRAS.406.1134S

Query : 2010MNRAS.406.1134S

2010MNRAS.406.1134S - Mon. Not. R. Astron. Soc., 406, 1134-1139 (2010/August-1)

Offset between dark matter and ordinary matter: evidence from a sample of 38 lensing clusters of galaxies.

SHAN H., QIN B., FORT B., TAO C., WU X.-P. and ZHAO H.

Abstract (from CDS):

We compile a sample of 38 galaxy clusters which have both X-ray and strong lensing observations, and study for each cluster the projected offset between the dominant component of baryonic matter centre (measured by X-rays) and the gravitational centre (measured by strong lensing). Among the total sample, 45 per cent clusters have offsets >10arcsec. The >10arcsec separations are significant, considering the arcsecond precision in the measurement of the lensing/X-ray centres. This suggests that it might be a common phenomenon in unrelaxed galaxy clusters that gravitational field is separated spatially from the dominant component of baryonic matter. It also has consequences for lensing models of unrelaxed clusters since the gas mass distribution may differ from the dark matter distribution and give perturbations to the modelling. Such offsets can be used as a statistical tool for comparison with the results of Lambda cold dark matter (ΛCDM) simulations and to test the modified dynamics.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): gravitational lensing: strong - dark matter - X-rays: galaxies: clusters

Simbad objects: 39

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Number of rows : 39
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 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
2 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 517 0
3 ZwCl 0024+1652 ClG 00 26 35.6 +17 09 32     18.35     ~ 648 1
4 ACO 68 ClG 00 37 06.2 +09 09 33           ~ 195 0
5 ACO 209 ClG 01 31 52.9 -13 36 53           ~ 326 0
6 ACO 267 ClG 01 52 43.016 +00 59 58.90           ~ 241 0
7 ACO 370 ClG 02 39 50.5 -01 35 08           ~ 825 0
8 ACO 383 ClG 02 48 03.3915 -03 31 45.228           ~ 389 0
9 ClG 0440+02 ClG 04 43 09.7 +02 10 19     17.03     ~ 129 0
10 ClG 0451-03 ClG 04 54 10.9 -03 01 07     20.0     ~ 368 0
11 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
12 ACO 586 ClG 07 32 20.3 +31 37 58           ~ 196 0
13 ACO 697 ClG 08 42 57.6 +36 21 45           ~ 277 0
14 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 308 0
15 ClG 1008-12 ClG 10 10 34.1 -12 39 48     18.0     ~ 155 0
16 ACO 963 ClG 10 17 03.4 +39 02 56           ~ 414 0
17 ZwCl 1021+0426 ClG 10 23 39.0 +04 11 14   15.6 17.95     ~ 297 0
18 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 458 0
19 ClG 1137+66 ClG 11 40 23.0 +66 08 16     21.0     ~ 141 0
20 ACO 1682 ClG 13 06 49.7 +46 32 59           ~ 149 1
21 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
22 ACO 1763 ClG 13 35 20.1 +41 00 04           ~ 335 0
23 ClG J1347-1145 ClG 13 47 30.5 -11 45 07           ~ 577 0
24 ZwCl 1358+6245 ClG 13 59 54.3 +62 30 36     18.5     ~ 370 0
25 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
26 ACO 1914 ClG 14 25 57.4 +37 49 54           ~ 338 0
27 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62 20.04   ~ 309 0
28 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 586 0
29 ClG 1621+26 ClG 16 23 35.7 +26 33 50           ~ 145 0
30 ACO 2204 ClG 16 32 47.7 +05 34 18           ~ 457 0
31 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
32 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 381 0
33 ACO 2259 ClG 17 20 09.2 +27 40 09           ~ 131 0
34 ACO 2261 ClG 17 22 26.9 +32 07 58           ~ 370 0
35 ACO 2294 ClG 17 24 10.1 +85 53 09           ~ 69 0
36 ClG 2053-04 ClG 20 56 21.2 -04 37 46   21.0       ~ 168 0
37 ClG 2137-2353 ClG 21 40 12.8 -23 39 27     18.5     ~ 390 0
38 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 732 2
39 ACO S 1077 ClG 22 58 52.34 -34 46 54.6           ~ 198 0

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