CDS

2009A&A...501..835M

Query : 2009A&A...501..835M

2009A&A...501..835M - Astronomy and Astrophysics, volume 501, 835-850 (2009/7-3)

AGN heating and ICM cooling in the HIFLUGCS sample of galaxy clusters.

MITTAL R., HUDSON D.S., REIPRICH T.H. and CLARKE T.

Abstract (from CDS):

Active galactic nuclei (AGN) at the center of galaxy clusters with gas cooling times that are much shorter than the Hubble time have emerged as heating agents powerful enough to prevent further cooling of the intracluster medium (ICM). We carried out an intensive study of the AGN heating-ICM cooling network by comparing various cluster parameters to the integrated radio luminosity of the central AGN, LR, defined as the total synchrotron power between 10MHz and 15GHz. This study is based on the HIFLUGCS sample comprising the 64 X-ray brightest galaxy clusters. We adopted the central cooling time, tcool, as the diagnostic to ascertain cooling properties of the HIFLUGCS sample and classify clusters with tcool<1Gyr as strong cool-core (SCC) clusters, with 1Gyr<tcool<7.7Gyr as weak cool-core (WCC) clusters and with tcool>7.7Gyr as non-cool-core (NCC) clusters. We find 48 out of 64 clusters (75%) contain cluster center radio sources (CCRS) cospatial with or within 50h71–1kpc of the X-ray peak emission. Furthermore, we find that the probability of finding a CCRS increases from 45% to 67% to 100% for NCC, WCC, and SCC clusters, respectively. 6mm We use a total of ∼140 independent radio flux-density measurements, with data at more than two frequencies for more than 54% of the sources extending below 500MHz, enabling the determination of accurate estimates of LR. We find that LR in SCC clusters depends strongly on the cluster scale such that more massive clusters harbor more powerful radio AGN. The same trend is observed between LR and the classical mass deposition rate, {dot}(M)classical in SCC and partly also in WCC clusters, and can be quantified as LR∝{dot}(M)classical1.69±0.25. We also perform correlations of the luminosity for the brightest cluster galaxy, LBCG, close to the X-ray peak in all 64 clusters with LR and cluster parameters, such as the virial mass, M500, and the bolometric X-ray luminosity, LX. To this end, we use the 2MASS K-band magnitudes and invoke the near-infrared bulge luminosity-black hole mass relation to convert LBCG to supermassive black hole mass, MBH. We find a weak correlation between MBH and LR for SCC clusters, LR∼MBH4.10±0.42, although with a few outliers. We find an excellent correlation of LBCG with M500 and LX for the entire sample, the SCC clusters showing a tighter trend in both the cases. We discuss the plausible reasons behind these scaling relations in the context of cooling flows and AGN feedback. 6mm Our results strongly suggest an AGN-feedback machinery in SCC clusters, which regulates the cooling in the central regions. Since the dispersion in these correlations, such as that between LR and {dot}(M)classical or LR and MBH, increases in going from SCC to WCC clusters, we conclude there must be secondary processes that work either in conjunction with the AGN heating or independently to counteract the radiative losses in WCC clusters.

Abstract Copyright: ∼

Journal keyword(s): cooling flows - galaxies: active - X-rays: galaxies: clusters - radio continuum: galaxies - galaxies: clusters: general

Simbad objects: 66

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Number of rows : 66
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 85 ClG 00 41 37.8 -09 20 33           ~ 841 0
2 ACO 119 ClG 00 56 16.8 -01 15 00           ~ 535 2
3 ACO 133 ClG 01 02 39.0 -21 57 15           ~ 350 1
4 NGC 507 BiC 01 23 39.950 +33 15 22.22   13.0       ~ 415 3
5 ZwCl 0120+3300 ClG 01 23 41.0 +33 15 40           ~ 74 0
6 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 677 1
7 ACO 400 ClG 02 57 37.4 +06 00 45           ~ 394 3
8 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 371 0
9 ACO 3112 ClG 03 17 52.4 -44 14 35           ~ 297 1
10 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1514 1
11 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 358 1
12 2MASX J03411752+1523477 BiC 03 41 17.5329189192 +15 23 47.567775336   17.5       ~ 42 1
13 ACO 3158 ClG 03 42 39.6 -53 37 50           ~ 281 0
14 ACO 3195 ClG 03 59 11 -35 10.5           ~ 9 0
15 ACO 478 ClG 04 13 20.7 +10 28 35           ~ 482 0
16 NGC 1550 BiC 04 19 37.9450450152 +02 24 35.918168940   14.0       ~ 165 1
17 ClG 0422-09 ClG 04 25 51.02 -08 33 38.5           ~ 89 0
18 ACO 3266 ClG 04 31 11.9 -61 24 23           ~ 384 0
19 ACO 496 ClG 04 33 30.3838 -13 14 21.584           ~ 670 2
20 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 284 0
21 ACO 3391 ClG 06 26 15.4 -53 40 52           ~ 185 1
22 ACO 3395 ClG 06 27 31.1 -54 23 58           ~ 192 0
23 ACO 576 ClG 07 21 24.1 +55 44 20           ~ 287 1
24 ACO 754 ClG 09 08 50.1 -09 38 12           ~ 643 1
25 NAME Hya A LIN 09 18 05.6783347248 -12 05 43.634531472   14.38 14.8     ~ 961 1
26 ACO 780 ClG 09 18 30 -12 15.7           ~ 443 0
27 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 807 1
28 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1038 1
29 NAME NGC 4073 Group GrG 12 04 21.7 +01 50 19     13.53     ~ 255 0
30 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1077 1
31 NGC 4646 GiG 12 42 52.1454845712 +54 51 21.510402480   13.8       ~ 32 0
32 ACO 3526 ClG 12 48 51.8 -41 18 21           ~ 1018 2
33 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 343 1
34 ACO 1650 ClG 12 58 36.76 -01 43 34.2           ~ 279 0
35 ACO 1651 ClG 12 59 22.43 -04 11 47.1           ~ 277 0
36 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4517 2
37 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 477 0
38 ACO 1736 ClG 13 26 52.1 -27 06 33           ~ 239 2
39 ACO 3558 ClG 13 27 54.8 -31 29 32           ~ 420 2
40 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 295 1
41 ACO 3571 ClG 13 47 28.9 -32 51 57           ~ 269 2
42 ACO 1795 ClG 13 49 00.5 +26 35 07           ~ 1203 0
43 ACO 3581 ClG 14 07 29.8 -27 01 04           ~ 174 3
44 NAME NGC 5718 Group ClG 14 40 38.5 +03 28 20     14.31     ~ 109 0
45 ClG J1504-0248 ClG 15 04 07.4 -02 48 15           ~ 160 0
46 ACO 2029 ClG 15 10 58.7 +05 45 42           ~ 893 0
47 ACO 2052 ClG 15 16 45.5 +07 00 01           ~ 702 1
48 NAME NGC 5920 Group ClG 15 21 50.7 +07 42 18     15.13     ~ 295 0
49 ACO 2065 ClG 15 22 42.6 +27 43 21           ~ 352 0
50 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 379 2
51 ACO 2142 ClG 15 58 20.00 +27 14 00.3           ~ 714 0
52 ACO 2147 ClG 16 02 17.2 +15 53 43           ~ 388 0
53 ACO 2163 ClG 16 15 34.1 -06 07 26           ~ 541 0
54 ACO 2199 ClG 16 28 37.0 +39 31 28           ~ 1129 1
55 ACO 2204 ClG 16 32 45.7 +05 34 43           ~ 415 0
56 ACO 2244 ClG 17 02 34.01 +34 04 41.1           ~ 256 0
57 ACO 2256 ClG 17 03 43.5 +78 43 03           ~ 854 1
58 ACO 2255 ClG 17 12 50.04 +64 03 10.6           ~ 531 0
59 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 590 1
60 ACO S 1101 ClG 23 13 58.5 -42 43 39           ~ 242 1
61 ACO 2589 ClG 23 24 00.5 +16 49 29           ~ 304 1
62 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 517 0
63 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 491 2
64 ACO 2657 ClG 23 44 51.0 +09 08 40           ~ 264 3
65 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 326 3
66 ACO 4059 ClG 23 56 40.7 -34 40 18           ~ 367 1

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2022.07.06-09:04:11

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