2013ApJ...776...84C

Query : 2013ApJ...776...84C

2013ApJ...776...84C - Astrophys. J., 776, 84 (2013/October-3)

Active galactic nucleus feedback and entropy injection in galaxy cluster cores.

CHAUDHURI A., MAJUMDAR S. and NATH B.B.

Abstract (from CDS):

We make the first estimate of non-gravitational energy profiles in galaxy cluster cores (and beyond) based on observational data. Comparing the observed entropy profiles within r500, from the Representative XMM-Newton Cluster Structure Survey to simulated base entropy profiles without feedback from both adaptive mesh refinement (AMR) and smoothed particle hydrodynamic (SPH) non-radiative simulations, we estimate the amount of additional non-gravitational energy, EICM, contained in the intracluster medium (ICM), as well as the total energy feedback, EFeedback, from active galactic nuclei (AGNs; the central AGNs in most cases) into the clusters. The total feedback energy scales with the mean spectroscopic temperature as EFeedback ∝ Tsp^2.52±0.008 and EFeedback ∝ Tsp2.17±0.11 for the SPH and AMR baseline profiles. The mean non-gravitational energy per particle within r500 remaining in the ICM after energy lost during cooling is εICM = 2.8±0.8 keV for the SPH theoretical relation and εICM= 1.7 ±0.9 keV for the AMR theoretical relation. We use the NRAO/VLA Sky Survey source catalog to determine the radio luminosity, LR, at 1.4 GHz of the central source(s) of our sample. For Tsp> 3 keV, the EFeedbackcorrelates with LR, although with different normalization for cool-core and non-cool-core clusters. We show that AGNs could provide a significant portion of the feedback.

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Journal keyword(s): galaxies: clusters: general - X-rays: galaxies: clusters

Simbad objects: 31

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Number of rows : 31
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 2700 ClG 00 03 49.7 +02 03 59           ~ 94 0
2 ACO 2721 ClG 00 05 57.0 -34 43 09           ~ 99 0
3 ACO 22 ClG 00 20 41.4 -25 42 39           ~ 111 0
4 ACO S 84 ClG 00 49 23.2 -29 31 33           ~ 89 0
5 ACO 2941 ClG 01 45 03.60 -53 01 23.4           ~ 61 0
6 ACO 2984 ClG 02 11 25.1 -40 17 29           ~ 53 0
7 BAX 036.2925-29.4731 ClG 02 25 08.6 -29 28 34           ~ 36 0
8 ACO S 384 ClG 03 45 45.0 -41 10 42           ~ 40 0
9 ACO 3364 ClG 05 47 38.1 -31 52 15           ~ 86 0
10 ACO 3378 ClG 06 05 53.7 -35 18 06           ~ 90 1
11 MARD J061720.6-475002 ClG 06 16 51.4 -47 47 41           ~ 39 0
12 ACO 3404 ClG 06 45 29.50 -54 13 37.0           ~ 109 0
13 ACO 653 ClG 08 21 50.6 +01 11 49           ~ 47 0
14 ACO 907 ClG 09 58 21.84 -11 03 47.5           ~ 137 0
15 ACO 1084 ClG 10 44 37.1 -07 04 47           ~ 78 0
16 ACO 1348 ClG 11 41 24.0 -12 16 00           ~ 70 0
17 ACO S 700 ClG 12 36 41.8 -33 55 01           ~ 33 0
18 ACO 1663 ClG 13 02 52.55 -02 31 04.0           ~ 112 0
19 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
20 ACO 2050 ClG 15 16 18.7 +00 05 31           ~ 122 0
21 ACO 2051 ClG 15 16 47.15 -01 00 32.8           ~ 68 0
22 ACT-CL J2014.8-2430 ClG 20 14 49.7 -24 30 30           ~ 93 0
23 ACO S 868 ClG 20 22 59.5 -20 56 40           ~ 35 1
24 ACO 2328 ClG 20 48 09.8 -17 50 14           ~ 78 0
25 ACO 3771 ClG 21 29 43.2 -50 48 34           ~ 50 0
26 ACO 3814 ClG 21 49 07.24 -30 42 06.4           ~ 60 0
27 ACO 2399 ClG 21 57 19.01 -07 50 57.5           ~ 197 0
28 ACO 3854 ClG 22 17 45.72 -35 43 31.4           ~ 75 0
29 ACO 3856 ClG 22 18 45.2 -38 53 57           ~ 87 2
30 ACO 3888 ClG 22 34 26.3 -37 44 29           ~ 151 1
31 ACO 3992 ClG 23 19 41.8 -73 13 51           ~ 38 0

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