2010ApJ...721L..82C


Query : 2010ApJ...721L..82C

2010ApJ...721L..82C - Astrophys. J., 721, L82-L85 (2010/October-1)

On the connection between giant radio halos and cluster mergers.

CASSANO R., ETTORI S., GIACINTUCCI S., BRUNETTI G., MARKEVITCH M., VENTURI T. and GITTI M.

Abstract (from CDS):

The frequently observed association between giant radio halos (RHs) and merging galaxy clusters has driven present theoretical models of non-thermal emission from galaxy clusters, which are based on the idea that the energy dissipated during cluster-cluster mergers could power the formation of RHs. To quantitatively test the merger-halo connection, we present the first statistical study based on deep radio data and X-ray observations of a complete X-ray-selected sample of galaxy clusters with X-ray luminosity ≥5x1044 erg/s and redshift 0.2 ≤ z ≤ 0.32. Using several methods to characterize cluster substructures, namely, the power ratios, centroid shift, and X-ray brightness concentration parameter, we show that clusters with and without RH can be quantitatively differentiated in terms of their dynamical properties. In particular, we confirm that RHs are associated with dynamically disturbed clusters and clusters without RH are more "relaxed," with only a couple of exceptions where a disturbed cluster does not exhibit a halo.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - radiation mechanisms: non-thermal - radio continuum: general - X-rays: galaxies: clusters

Simbad objects: 32

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Number of rows : 32
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 645 0
2 ACO 141 ClG 01 05 30.2342 -24 39 17.430           ~ 73 0
3 ACO 209 ClG 01 31 57.5 -13 34 35           ~ 271 0
4 ACO 267 ClG 01 52 41 +01 00.4           ~ 213 0
5 ACO 3088 ClG 03 07 02.12 -28 39 57.3           ~ 64 0
6 1RXS J043709.8+004337 ClG 04 37 12.0820 +00 43 37.737           ~ 39 0
7 ACO 521 ClG 04 54 08.6 -10 14 39           ~ 228 0
8 ACO 520 ClG 04 54 19.0 +02 56 49           ~ 406 0
9 ACO 611 ClG 08 00 58.7 +36 02 49           ~ 241 0
10 ACO 697 ClG 08 42 57.6 +36 21 45           ~ 233 0
11 ZwCl 0857+2107 ClG 09 00 37.9 +20 54 58           ~ 82 0
12 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 273 0
13 ACO 781 ClG 09 20 25.4 +30 30 07           ~ 135 0
14 ZwCl 0949+5207 ClG 09 52 49.1 +51 53 05           ~ 121 0
15 MCS J1115.8+0129 ClG 11 15 52.1 +01 29 53           ~ 115 0
16 ACO 1300 ClG 11 32 00.7 -19 53 34           ~ 140 0
17 ACO 1423 ClG 11 57 47.34 +33 42 43.5           ~ 152 0
18 ACO 1682 ClG 13 06 49.7 +46 32 59           ~ 125 1
19 ACO 1758 ClG 13 32 32.1 +50 30 37           ~ 237 2
20 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62     ~ 274 0
21 ACO S 780 ClG 14 59 29.1 -18 10 45           ~ 70 0
22 ClG J1504-0248 ClG 15 04 07.4 -02 48 15           ~ 160 0
23 ClG J1532+3021 ClG 15 32 53.8 +30 21 00           ~ 102 0
24 ACO 2163 ClG 16 15 34.1 -06 07 26           ~ 541 0
25 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 337 0
26 ACO 2261 ClG 17 22 28.3 +32 09 13           ~ 314 0
27 RXC J2003.5-2323 ClG 20 03 32.3 -23 23 30           ~ 55 0
28 ACO 2390 ClG 21 53 34.6 +17 40 11           ~ 652 2
29 BAX 337.1433+20.6131 ClG 22 28 37.1 +20 36 31           ~ 105 0
30 ACO 2537 ClG 23 08 22.3 -02 11 29           ~ 122 0
31 ACO 2631 ClG 23 37 40.7 +00 16 35           ~ 150 0
32 ACO 2667 ClG 23 51 39.37 -26 05 02.7           ~ 161 0

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2022.07.06-09:15:05

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