2012ApJ...749...19K


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.14CEST13:54:57

2012ApJ...749...19K - Astrophys. J., 749, 19 (2012/April-2)

An active galactic nucleus driven shock in the intracluster medium around the radio galaxy 3C 310.

KRAFT R.P., BIRKINSHAW M., NULSEN P.E.J., WORRALL D.M., CROSTON J.H., FORMAN W.R., HARDCASTLE M.J., JONES C. and MURRAY S.S.

Abstract (from CDS):

We present results from a 57.6 ks Chandra observation of the cluster gas associated with the fat-double radio galaxy 3C 310. We find a surface brightness discontinuity in the gas outside the southern radio lobe that we attribute to a shock driven by the supersonic inflation of this lobe ∼180 kpc from the nucleus. Modeling the surface brightness/density jump, the shock has Mach number 1.5-1.9, depending on the assumptions one makes about the density profile and the nature of the energy input. There are not sufficient counts in the image to detect conclusively the temperature jump associated with the shock. The total mechanical energy of the outburst is 5x1060 erg. Assuming a Mach 1.9 shock, the age of the outburst is ∼100 million yrs, and the time-averaged power of the outburst is ∼1.3x1045 erg/s. The power input is 100 times greater than the radiative losses of the gas within the radius of the shock. Most importantly, the equivalent heat input due to the entropy increase is roughly 10% of the thermal energy of the gas to the radius of the shock. 3C 310 is another example where regular outbursts of the observed strength with a duty cycle of 0.1 could offset the radiative losses of the gas near the Bondi radius and regulate feedback. We also detect a cool filamentary X-ray arm along the eastern periphery of the southern radio lobe. This arm is probably composed of low-entropy gas dredged up in the inflation of the radio plasma, similar to features seen in M87.

Abstract Copyright:

Journal keyword(s): galaxies: individual: 3C 310 - galaxies: jets - hydrodynamics - X-rays: galaxies: clusters

Simbad objects: 19

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Number of rows : 19

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 315 LIN 00 57 48.88335 +30 21 08.8122 12.80 12.20 11.16 11.26   ~ 723 2
2 NGC 383 rG 01 07 24.95870 +32 24 45.2140   13.6 12.14     ~ 732 3
3 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2004 1
4 3C 84 Sy2 03 19 48.1597607660 +41 30 42.114155434   13.10 12.48 11.09   ~ 3632 3
5 2E 0736.0+1743 X 07 38 56.5 +17 36 09           ~ 3 0
6 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6009 0
7 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6383 3
8 M 89 LIN 12 35 39.8073444 +12 33 22.830809 11.29 10.73 9.75     ~ 941 2
9 NGC 4636 LIN 12 42 49.867 +02 41 16.01   12.62 11.84     ~ 1051 1
10 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 338 1
11 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 4087 3
12 ACO 1795 ClG 13 49 00.5 +26 35 07           ~ 1181 0
13 NGC 5813 LIN 15 01 11.265 +01 42 07.09 12.00 11.45 10.46 10.06   ~ 591 1
14 VV 204 AGN 15 04 57.120 +26 00 58.46   15.24       ~ 277 0
15 NAME Hercules A BiC 16 51 08.024 +04 59 34.91     18.25     ~ 438 1
16 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 573 1
17 ACO 3847 ClG 22 14 31 -17 01.1           ~ 17 0
18 NGC 7236 LIN 22 14 44.989 +13 50 47.43   14.3 14.3     ~ 259 2
19 UGC 12064 AGN 22 31 20.625 +39 21 29.81   14.6       ~ 422 1

    Equat.    Gal    SGal    Ecl

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2021.04.14-13:54:57

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