2024MNRAS.528.7274H

Query : 2024MNRAS.528.7274H

2024MNRAS.528.7274H - Mon. Not. R. Astron. Soc., 528, 7274-7299 (2024/March-2)

Merger-driven multiscale ICM density perturbations: testing cosmological simulations and constraining plasma physics.

HEINRICH A., ZHURAVLEVA I., ZHANG C., CHURAZOV E., FORMAN W. and VAN WEEREN R.J.

Abstract (from CDS):

The hot intracluster medium (ICM) provides a unique laboratory to test multiscale physics in numerical simulations and probe plasma physics. Utilizing archival Chandra observations, we measure density fluctuations in the ICM in a sample of 80 nearby (z ≲ 1) galaxy clusters and infer scale-dependent velocities within regions affected by mergers (r < R2500c), excluding cool-cores. Systematic uncertainties (e.g. substructures, cluster asymmetries) are carefully explored to ensure robust measurements within the bulk ICM. We find typical velocities ∼220 (300) km s–1 in relaxed (unrelaxed) clusters, which translate to non-thermal pressure fractions ∼4 (8) per cent, and clumping factors ∼1.03 (1.06). We show that density fluctuation amplitudes could distinguish relaxed from unrelaxed clusters in these regions. Comparison with density fluctuations in cosmological simulations shows good agreement in merging clusters. Simulations underpredict the amplitude of fluctuations in relaxed clusters on length scales <0.75 R2500c, suggesting these systems are most sensitive to 'missing' physics in the simulations. In clusters hosting radio haloes, we examine correlations between gas velocities, turbulent dissipation rate, and radio emission strength/efficiency to test turbulent re-acceleration of cosmic ray electrons. We measure a weak correlation, driven by a few outlier clusters, in contrast to some previous studies. Finally, we present upper limits on effective viscosity in the bulk ICM of 16 clusters, showing it is systematically suppressed by at least a factor of 8, and the suppression is a general property of the ICM. Confirmation of our results with direct velocity measurements will be possible soon with XRISM.

Abstract Copyright: © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): hydrodynamics - turbulence - methods: data analysis - techniques: image processing - galaxies: clusters: intracluster medium - X-rays: galaxies: clusters

Simbad objects: 84

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Number of rows : 84
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 0008+5215 ClG 00 11 37.197 +52 32 31.68           ~ 61 0
2 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
3 MCS J0025.4-1222 ClG 00 25 29.381 -12 22 37.06           ~ 151 0
4 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
5 ACO 133 ClG 01 02 41.5 -21 52 53           ~ 391 1
6 ZwCl 0104+5350 ClG 01 07 43.2 +54 08 43           ~ 35 0
7 ACO S 295 ClG 02 45 35.80 -53 02 16.8           ~ 86 0
8 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 420 0
9 ACO 401 ClG 02 58 50.3 +13 34 07           ~ 592 0
10 ACO 3112 ClG 03 17 52.9 -44 15 06           ~ 329 1
11 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
12 ICRF J040549.2+380332 SyG 04 05 49.26287155 +38 03 32.2348497   18.5 18.5     ~ 187 3
13 ACO 478 ClG 04 13 24.8 +10 27 52           ~ 522 0
14 MCS J0416.1-2403 ClG 04 16 08.380 -24 04 20.80           ~ 425 0
15 BAX 069.7593+05.3453 ClG 04 39 02.2 +05 20 43           ~ 82 0
16 ACO 520 ClG 04 54 10.1 +02 55 38           ~ 465 0
17 ACT-CL J0528.8-3927 ClG 05 28 56.2 -39 27 49           ~ 78 0
18 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
19 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 511 0
20 ACO 586 ClG 07 32 20.3 +31 37 58           ~ 196 0
21 3C 186 QSO 07 44 17.4720658920 +37 53 17.250697320   17.5 18.14 17.2   ~ 339 1
22 ClG 0745-1910 ClG 07 47 32.4 -19 18 23           ~ 378 0
23 ACO 644 ClG 08 17 26.1 -07 31 13           ~ 241 0
24 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 457 0
25 ACO 3411 ClG 08 41 47.7 -17 28 46           ~ 81 0
26 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 308 0
27 ACO 780 ClG 09 18 30 -12 15.7           ~ 469 0
28 ClG J0947+7623 ClG 09 46 59.916 +76 23 43.99           ~ 165 0
29 ZwCl 0949+5207 ClG 09 52 49.1 +51 53 05           ~ 141 0
30 ACO 1240 ClG 11 23 37.7 +43 03 28           ~ 113 0
31 ACO 1300 ClG 11 32 00.7 -19 53 34           ~ 168 0
32 ACO 1351 ClG 11 42 24.7795 +58 32 05.558           ~ 90 0
33 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
34 MCS J1149.5+2223 ClG 11 49 35.8 +22 23 55           ~ 546 0
35 ACO 1413 ClG 11 55 12.87 +23 23 46.9           ~ 456 0
36 MCS J1206.2-0847 ClG 12 06 12.2 -08 48 02           ~ 286 0
37 MCS J1226.8+2153 ClG 12 26 51.69 +21 52 25.4           ~ 33 0
38 ACO 1650 ClG 12 58 42.0 -01 45 45           ~ 325 0
39 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
40 ACO 1664 ClG 13 03 42.4 -24 14 44           ~ 136 0
41 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
42 MCXC J1332.7+5032 ClG 13 32 44.8 +50 32 24           ~ 134 0
43 ClG J1347-1145 ClG 13 47 30.5 -11 45 07           ~ 577 0
44 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
45 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
46 ClG J1423+2404 ClG 14 23 47.7 +24 04 40           ~ 231 0
47 ACO 1914 ClG 14 25 57.4 +37 49 54           ~ 338 0
48 ACO 1916 ClG 14 28 21 -08 09.4           ~ 5 0
49 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62 20.04   ~ 309 0
50 ClG J1504-0248 ClG 15 04 07.4 -02 48 15           ~ 186 0
51 ACO 2034 ClG 15 10 03.9 +33 30 57           ~ 248 1
52 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
53 ACO 2052 ClG 15 16 41.64 +07 01 45.5           ~ 756 1
54 ACT-CL J1521.8+0742 ClG 15 21 48.8 +07 43 41     15.13     ~ 326 0
55 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 414 2
56 ClG J1532+3021 ClG 15 32 53.8 +30 21 00           ~ 122 0
57 ACO 2142 ClG 15 58 26.5 +27 13 52           ~ 825 0
58 ACO 2151 ClG 16 05 15.0 +17 44 55           ~ 594 3
59 ClG J1621+3810 ClG 16 21 25.5 +38 09 43           ~ 83 0
60 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
61 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
62 ACO 2204 ClG 16 32 47.7 +05 34 18           ~ 457 0
63 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 381 0
64 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
65 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
66 ClG J1931-2635 ClG 19 31 49.6 -26 34 33           ~ 181 0
67 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2
68 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 676 1
69 ACT-CL J2043.2-5035 ClG 20 43 16.7205 -50 35 30.861           ~ 47 0
70 ClG 2137-2353 ClG 21 40 12.8 -23 39 27     18.5     ~ 390 0
71 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 732 2
72 2C 1820 SyG 21 55 52.324 +38 00 28.51   19.20       ~ 234 1
73 ACO 3847 ClG 22 14 25.9 -17 01 45           ~ 23 0
74 ACO 2443 ClG 22 26 14.09 +17 25 13.5           ~ 126 0
75 BAX 337.1433+20.6131 ClG 22 28 32.6 +20 37 08           ~ 132 0
76 ClG J2243-0935 ClG 22 43 21.1 -09 35 43           ~ 96 0
77 ACO S 1063 ClG 22 48 45.4 -44 31 42           ~ 395 0
78 ACO 2495 ClG 22 50 17.10 +10 55 01.2           ~ 87 0
79 ACO 2537 ClG 23 08 22.3 -02 11 29           ~ 152 0
80 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 572 0
81 ACO 2626 ClG 23 36 31.0 +21 09 36           ~ 265 0
82 ZwCl 2341+0000 ClG 23 43 40.566 +00 18 18.94           ~ 83 0
83 ACT-CL J2344.7-4243 ClG 23 44 43.9 -42 43 11           ~ 229 0
84 ACO 4067 ClG 23 58 49.9 -60 37 25           ~ 55 0

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