2001A&A...366..788T


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.12CEST13:10:04

2001A&A...366..788T - Astronomy and Astrophysics, volume 366, 788-795 (2001/2-2)

BeppoSAX observation of Hercules A and MRC 0625-536.

TRUSSONI E., FERETTI L., MASSAGLIA S. and PARMA P.

Abstract (from CDS):

We present BeppoSAX observations of the two FR I type radio galaxies Hercules A (3C 348) and MRC 0625-536 in the energy range 0.2-200keV. Data analysis shows that the X-ray flux from Hercules A is consistent with a diffuse thermal plasma emitting at T≃4-5keV with a possible, but somewhat uncertain, contribution of a softer component at T≃3keV. The non thermal emission from the active nucleus must be significantly smaller than the thermal one, and no indication of relevant core obscuration by a surrounding torus was detected. The flux from MRC 0625-536 originates from an extended region and has been fitted to a thermal law with T≃5.7keV and with a column density consistent with the galactic absorption. A spatially resolved spectral analysis does not show a relevant variation of the temperature and of the metallicity across the diffuse emission zone. A non thermal spectral component, related to the nuclear activity, may be present in the innermost region with some possible amount of local obscuration, contributing ≲10% to the total luminosity. Hard X-ray emission from MRC 0625-536 has been detected in the PDS (15-200keV) that may be related either to its galactic core or to the intracluster region.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: clusters: individual: A 3391 - galaxies: individual: Hercules A, MRC 0625-536 - galaxies: nuclei - X-rays: galaxies

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 QSO B0622-525 BLL 06 23 37.70 -52 57 56.9     19.5 17.7   ~ 25 0
2 ACO 3391 ClG 06 26 15.4 -53 40 52           ~ 170 1
3 ESO 161-7 IG 06 26 21.5 -53 41 09   14.48 15.4 15.16   ~ 70 2
4 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4208 2
5 ACO 2199 ClG 16 28 37.0 +39 31 28           ~ 1101 1
6 NAME Hercules A BiC 16 51 08.024 +04 59 34.91     18.25     ~ 433 1
7 ACO 2256 ClG 17 03 43.5 +78 43 03           ~ 830 1

    Equat.    Gal    SGal    Ecl

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2020.07.12-13:10:04

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