2010ApJ...715.1071O


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.20CEST12:12:59

2010ApJ...715.1071O - Astrophys. J., 715, 1071-1093 (2010/June-1)

X-ray-emitting GHz-peaked-spectrum galaxies: testing a dynamical-radiative model with broadband spectra.

OSTORERO L., MODERSKI R., STAWARZ L., DIAFERIO A., KOWALSKA I., CHEUNG C.C., KATAOKA J., BEGELMAN M.C. and WAGNER S.J.

Abstract (from CDS):

In a dynamical-radiative model we recently developed to describe the physics of compact, GHz-peaked-spectrum (GPS) sources, the relativistic jets propagate across the inner, kpc-sized region of the host galaxy, while the electron population of the expanding lobes evolves and emits synchrotron and inverse-Compton (IC) radiation. Interstellar-medium gas clouds engulfed by the expanding lobes, and photoionized by the active nucleus, are responsible for the radio spectral turnover through free-free absorption (FFA) of the synchrotron photons. The model provides a description of the evolution of the spectral energy distribution (SED) of GPS sources with their expansion, predicting significant and complex high-energy emission, from the X-ray to the γ-ray frequency domain. Here, we test this model with the broadband SEDs of a sample of 11 X-ray-emitting GPS galaxies with compact-symmetric-object morphology, and show that (1) the shape of the radio continuum at frequencies lower than the spectral turnover is indeed well accounted for by the FFA mechanism and (2) the observed X-ray spectra can be interpreted as non-thermal radiation produced via IC scattering of the local radiation fields off the lobe particles, providing a viable alternative to the thermal, accretion-disk-dominated scenario. We also show that the relation between the hydrogen column densities derived from the X-ray (NH) and radio (N_ H I_) data of the sources is suggestive of a positive correlation, which, if confirmed by future observations, would provide further support to our scenario of high-energy emitting lobes.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: individual (IERS B0026+346, IERS B0108+388, IERS B0500+019, IERS B0710+439, PKS B0941-080, IERS B1031+567, IERS B1345+125, IVS B1358+624, IERS B1404+286, IERS B2128+048, IERS B2352+495) - galaxies: jets - radiation mechanisms: non-thermal - X-rays: galaxies

Simbad objects: 15

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Number of rows : 15

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 ICRF J002914.2+345632 AGN 00 29 14.24246572 +34 56 32.2471186   20.2       ~ 114 1
2 QSO B0108+388 Bla 01 11 37.31680 +39 06 28.1039     22 22.000   ~ 231 1
3 PKS 0428+205 rG 04 31 03.76136151 +20 37 34.2649550   22.174   19.085   ~ 163 1
4 ICRF J050321.1+020304 Sy2 05 03 21.19717510 +02 03 04.6763382   22.500 21.350 20.682   ~ 170 1
5 QSO B0710+439 QSO 07 13 38.16412910 +43 49 17.2071530   20.7       ~ 221 0
6 ICRF J094336.9-081930 LIN 09 43 36.94438939 -08 19 30.8134537   19.401   18.100   ~ 105 2
7 ICRF J103507.0+562846 Sy2 10 35 07.03999665 +56 28 46.7960909   20.2 21.244 20.200   ~ 167 1
8 ICRF J112027.8+142054 G 11 20 27.80726 +14 20 54.9914   20 20.935 20.100   ~ 137 1
9 4C 32.44 QSO 13 26 16.51232948 +31 54 09.5144454   21.367 19.822 18.882   ~ 151 1
10 ICRF J134733.3+121724 Sy2 13 47 33.36161542 +12 17 24.2402572   19.28 18.44 15.718   ~ 519 3
11 ICRF J140028.6+621038 Sy2 14 00 28.64868162 +62 10 38.5884658   22.137 20.373 19.530   ~ 155 1
12 QSO B1404+286 BLL 14 07 00.3933203928 +28 27 14.695133019   16.13 15.35 10.29   ~ 657 2
13 NAME Cyg A Sy2 19 59 28.35645829 +40 44 02.0966496   16.22 15.10     ~ 2057 2
14 ICRF J213032.8+050217 G 21 30 32.87739291 +05 02 17.4741657     23.4     ~ 138 1
15 ICRF J235509.4+495008 Sy2 23 55 09.45814510 +49 50 08.3395036   21.101   18.400   ~ 243 1

    Equat.    Gal    SGal    Ecl

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2019.10.20-12:12:59

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