Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effervescent heating: constraints from nearby cooling flow clusters
  observed with XMM-Newton   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 $f_c$ (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 $r_0$ (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 $r_0$ 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.

37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat