2006A&A...453..423P


Query : 2006A&A...453..423P

2006A&A...453..423P - Astronomy and Astrophysics, volume 453, 423-431 (2006/7-2)

Effervescent heating: constraints from nearby cooling flow clusters observed with XMM-Newton.

PIFFARETTI R. and KAASTRA J.S.

Abstract (from CDS):

We have used deprojected radial density and temperature profiles of a sample of 16 nearby CF clusters observed with XMM-Newton to test whether the effervescent heating model can satisfactorily explain the dynamics of CF clusters. For each cluster we derived the required extra heating as a function of cluster-centric distance for various values of the unknown parameters {dot}(M) (mass deposition rate) and fc (conduction efficiency). We fitted the extra heating curve using the AGN effervescent heating function and derived the AGN parameters L (the time-averaged luminosity) and r0 (the scale radius where the bubbles start rising in the ICM). While we do not find any solution with the effervescent heating model for only one object, we do show that AGN and conduction heating are not cooperating effectively for half of the objects in our sample. For most of the clusters we find that, when a comparison is possible, the derived AGN scale radius r0 and the observed AGN jet extension have the same order of magnitude. The AGN luminosities required to balance radiative losses are substantially lowered if the fact that the AGN deposits energy within a finite volume is taken into account. For the Virgo cluster, we find that the AGN power derived from the effervescent heating model is in good agreement with the observed jet power.

Abstract Copyright:

Journal keyword(s): X-rays: galaxies: clusters - cooling flows - conduction - galaxies: active

Simbad objects: 21

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Number of rows : 21
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 NGC 533 GiG 01 25 31.4074984248 +01 45 33.236656812   13.1 14.11     ~ 220 0
2 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 677 1
3 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 375 0
4 ACO 3112 ClG 03 17 52.4 -44 14 35           ~ 298 1
5 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2116 1
6 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 359 1
7 ACO 3266 ClG 04 31 11.9 -61 24 23           ~ 388 0
8 ACO 496 ClG 04 33 30.3838 -13 14 21.584           ~ 671 2
9 ACO 754 ClG 09 08 50.1 -09 38 12           ~ 647 1
10 ACO 780 ClG 09 18 30 -12 15.7           ~ 445 0
11 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6316 0
12 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6734 3
13 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4548 2
14 ACO 1795 ClG 13 49 00.5 +26 35 07           ~ 1205 0
15 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 657 1
16 ACO 1837 ClG 14 01 36.2 -11 07 48           ~ 101 0
17 ACO 2052 ClG 15 16 45.5 +07 00 01           ~ 703 1
18 NAME NGC 5920 Group ClG 15 21 50.7 +07 42 18     15.13     ~ 296 0
19 BAX 233.1222+04.6817 ClG 15 32 29.3 +04 40 54     15.13     ~ 58 0
20 ACO S 1101 ClG 23 13 58.5 -42 43 39           ~ 243 1
21 ACO 4059 ClG 23 56 40.7 -34 40 18           ~ 368 1

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2022.09.26-08:20:55

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