SIMBAD references

2008ApJ...673L..17G - Astrophys. J., 673, L17-L20 (2008/January-3)

Trouble for AGN feedback? the puzzle of the core of the galaxy cluster AWM 4.


Abstract (from CDS):

The core of the relaxed cluster AWM 4 is characterized by a unique combination of properties which defy a popular scenario for AGN heating of cluster cores. A flat inner temperature profile is indicative of a past, major heating episode which completely erased the cool core, as testified by the high central cooling time (≳3 Gyr) and by the high central entropy level (∼60 keV cm2). Yet the presence of a 1.4 GHz active central radio galaxy with extended radio lobes out to 100 kpc reveals recent feeding of the central massive black hole. A system like AWM 4 should have no radio emission at all if only feedback from the cooling hot gas regulates the AGN activity.

Abstract Copyright:

Journal keyword(s): Galaxies: Cooling Flows - Galaxies: Clusters: General - galaxies: clusters: individual (AWM 4) - X-Rays: Galaxies: Clusters

CDS comments: 0735+7241 is a misprint for 0735+7421 (= ZwCl 0735+7421)

Simbad objects: 21

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