2007ApJ...664L..83K


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.27CEST08:37:12

2007ApJ...664L..83K - Astrophys. J., 664, L83-L86 (2007/August-1)

The disturbed 17 keV cluster associated with the radio galaxy 3C 438.

KRAFT R.P., FORMAN W.R., HARDCASTLE M.J., JONES C. and NULSEN P.E.J.

Abstract (from CDS):

We present results from a Chandra observation of the cluster gas associated with the FR II radio galaxy 3C 438. This radio galaxy is embedded within a massive cluster with gas temperature ∼17 keV and bolometric luminosity of 6x1045 ergs/s. It is unclear if this high temperature represents the gravitational mass of the cluster or if this is an already high (∼11 keV) temperature cluster that has been heated transiently. We detect a surface brightness discontinuity in the gas that extends ∼600 kpc through the cluster. The radio galaxy 3C 438 is too small (∼110 kpc across) and too weak to have created this large disturbance in the gas. The discontinuity must be the result of either an extremely powerful nuclear outburst or the major merger of two massive clusters. If the observed features are the result of a nuclear outburst, it must be from an earlier epoch of unusually energetic nuclear activity. However, the energy required (∼1063 ergs) to move the gas on the observed spatial scales strongly supports the merger hypothesis. In either scenario, this is one of the most extreme events in the local universe.

Abstract Copyright:

Journal keyword(s): Galaxies: Individual: Alphanumeric: 3C 438 - Galaxies: Jets - Hydrodynamics - X-Rays: Galaxies: Clusters

Status at CDS:  

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ZwCl 0735+7421 ClG 07 41 40.3 +74 14 58     17.70     ~ 216 0
2 ACO 780 ClG 09 18 30 -12 15.7           ~ 425 0
3 ClG J1347-1145 ClG 13 47 33.5 -11 45 42           ~ 463 0
4 2MASX J21555232+3800285 SyG 21 55 52.324 +38 00 28.51   19.20       ~ 214 1

    Equat.    Gal    SGal    Ecl

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2020.05.27-08:37:13

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