2018A&A...619A..75M


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.13CET14:50:48

2018A&A...619A..75M - Astronomy and Astrophysics, volume 619A, 75-75 (2018/11-1)

Focusing on the extended X-ray emission in 3C 459 with a Chandra follow-up observation.

MASELLI A., KRAFT R.P., MASSARO F. and HARDCASTLE M.J.

Abstract (from CDS):


Aims. We investigated the X-ray emission properties of the powerful radio galaxy 3C 459 revealed by a recent Chandra follow-up observation carried out in October 2014 with a 62ks exposure.
Methods. We performed an X-ray spectral analysis from a few selected regions on an image obtained from this observation and also compared the X-ray image with a 4.9GHz VLA radio map available in the literature.
Results. The dominant contribution comes from the radio core but significant X-ray emission is detected at larger angular separations from it, surrounding both radio jets and lobes. According to a scenario in which the extended X-ray emission is due to a plasma collisionally heated by jet-driven shocks and not magnetically dominated, we estimated its temperature to be ∼0.8keV. This hot gas cocoon could be responsible for the radio depolarization observed in 3C 459, as recently proposed also for 3C 171 and 3C 305. On the other hand, our spectral analysis and the presence of an oxygen K edge, blueshifted at 1.23keV, cannot exclude the possibility that the X-ray radiation originating from the inner regions of the radio galaxy could be intercepted by some outflow of absorbing material intervening along the line of sight, as already found in some BAL quasars.

Abstract Copyright: © ESO 2018

Journal keyword(s): galaxies: active - galaxies: clusters: individual: 3C 459 - radio continuum - galaxies: X-rays: general

Simbad objects: 7

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Number of rows : 7

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 3C 171.0 Sy2 06 55 14.7 +54 08 59   19.94 19.08     ~ 236 0
2 QSO J0831+5245 QSO 08 31 41.7095363198 +52 45 17.620340544   19.2   14.5 13.9 ~ 472 1
3 QSO B1115+080A QSO 11 18 16.951 +07 45 58.23   16.61 16.44     ~ 604 2
4 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 3896 3
5 8C 1443+773 Sy2 14 43 14.0 +77 07 28   19   18.730   ~ 137 1
6 IC 1065 Sy2 14 49 21.5921149894 +63 16 13.816373757   17.30 16.39     ~ 330 1
7 2C 1883 Sy2 23 16 35.1925435787 +04 05 18.292942690   17.54 16.68 17.220   ~ 271 1

    Equat.    Gal    SGal    Ecl

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2019.11.13-14:50:48

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