2012A&A...545A..90D


Query : 2012A&A...545A..90D

2012A&A...545A..90D - Astronomy and Astrophysics, volume 545A, 90-90 (2012/9-1)

The nature of the multi-wavelength emission of 3C 111.

DE JONG S., BECKMANN V. and MATTANA F.

Abstract (from CDS):

We attempt to determine the nature of the high energy emission of the radio galaxy 3C 111, by distinguishing between the effects of the thermal and non-thermal processes. We study the X-ray spectrum of 3C 111 between 0.4keV and 200keV, and its spectral energy distribution, using data from the Suzaku satellite combined with INTEGRAL, Swift/BAT data, and Fermi/LAT data. We then model the overall spectral energy distribution by including radio and infrared data. The combined Suzaku, Swift and INTEGRAL data are represented by an absorbed exponentially cut-off power-law with reflection from neutral material with a photon index Γ=1.68±0.03, a high-energy cut-off Ecut=227–67+143keV, a reflection component with R=0.7±0.3 and a Gaussian component to account for the iron emission-line at 6.4keV with an equivalent width of EW=85±11eV. The X-ray spectrum appears dominated by thermal, Seyfert-like processes, but there are also indications of non-thermal processes. The radio to γ-ray spectral energy distribution can be fit with a single-zone synchrotron-self Compton model, with no need for an additional thermal component. We suggest a hybrid scenario to explain the broad-band emission, including a thermal component (iron line, reflection) that dominates in the X-ray regime and a non-thermal one to explain the spectral energy distribution.

Abstract Copyright:

Journal keyword(s): galaxies: active - gamma rays: galaxies - X-rays: galaxies - galaxies: individual: 3C 111

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 - 2022
#notes
1 3C 84 Sy2 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 3792 3
2 3EG J0416+3650 rG 04 16 +36.8           ~ 15 1
3 3C 111 Sy1 04 18 21.2772425736 +38 01 35.801359968   19.75 18.05     ~ 901 1
4 NAME Pic A Sy1 05 19 49.7229323856 -45 46 43.852662732   15.73 15.77 14.85   ~ 610 1
5 Mrk 421 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2534 1
6 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3530 2
7 NAME Centaurus A Sy2 13 25 27.6039817176 -43 01 09.493008456   8.18 6.84 6.66   ~ 4263 3

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2022.08.10-06:29:49

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