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The unified scheme seen with INTEGRAL detected AGN
- Source :
- X-ray Astronomy 2009; Present Status, Multi-wavelength Approach and Future Perspectives, X-ray Astronomy 2009, X-ray Astronomy 2009, Sep 2009, Bologna, Italy. pp.365-368, ⟨10.1063/1.3475259⟩
- Publication Year :
- 2009
- Publisher :
- HAL CCSD, 2009.
-
Abstract
- International audience; The INTEGRAL mission provides a large data set for studying the hard X-ray properties of AGN and allows to test the unified scheme for AGN. We present results based on the analysis of 199 AGN. A difference between the Seyfert types is detected in slightly flatter spectra with higher cut-off energies and lower luminosities for the type 2 AGN. When applying a Compton reflection model, the underlying continua (Γ~=1.95) appear the same in Seyfert 1 and 2, and the reflection strength is R~=1 in both cases, with differences in the inclination angle only. More luminous objects appear to be more massive and there is also a general trend for the absorbed sources and type 2 AGN to have lower Eddington ratios. The number counts are consistent with no evolution of the observed AGN. The unified model for Seyfert galaxies seems to hold, showing in hard X-rays that the central engine is the same in Seyfert 1 and 2 galaxies, seen under different inclination angle and absorption.
- Subjects :
- Brightness
X-ray spectra
[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]
circumnuclear matter
Astrophysics::High Energy Astrophysical Phenomena
brightness
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
active or peculiar galaxies
and systems
Spectral line
objects
X-ray
Inclination angle
luminosities
Magnitudes and colors
Quasars
Astrophysics::Galaxy Astrophysics
Physics
Seyfert galaxies
Black holes
[SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]
Astronomy
Quasar
Unified Model
Galaxy
Galactic nuclei
Reflection (physics)
and bulges
X ray spectra
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- X-ray Astronomy 2009; Present Status, Multi-wavelength Approach and Future Perspectives, X-ray Astronomy 2009, X-ray Astronomy 2009, Sep 2009, Bologna, Italy. pp.365-368, ⟨10.1063/1.3475259⟩
- Accession number :
- edsair.doi.dedup.....1ca6087c3b67d93e4c78ffb0f4bde137
- Full Text :
- https://doi.org/10.1063/1.3475259⟩