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A wide search of obscured Active Galactic Nuclei using XMM-Newton and WISE

Published online by Cambridge University Press:  25 July 2014

E. Rovilos ,
I. Georgantopoulos ,
A. Akylas ,
J. Aird ,
D. M. Alexander ,
A. Comastri ,
A. Del Moro ,
P. Gandhi ,
A. Georgakakis  and
C. M. Harrison
...Show all authors
E. Rovilos
Affiliation:
Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK
I. Georgantopoulos
Affiliation:
Institute of Astronomy & Astrophysics, National Observatory of Athens, Palaia Penteli, 15236, Athens, Greece
A. Akylas
Affiliation:
Institute of Astronomy & Astrophysics, National Observatory of Athens, Palaia Penteli, 15236, Athens, Greece
J. Aird
Affiliation:
Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK
D. M. Alexander
Affiliation:
Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK
A. Comastri
Affiliation:
INAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127, Bologna, Italy
A. Del Moro
Affiliation:
Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK
P. Gandhi
Affiliation:
Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK
A. Georgakakis
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Giessenbachstraße, 85471, Garching bei München, Germany
C. M. Harrison
Affiliation:
Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK
J. R. Mullaney
Affiliation:
Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK
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Abstract

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We use the WISE all sky survey observations to look for counterparts of hard X-ray selected sources from the XMM-Newton-SDSS survey. We then measure the 12 μm luminosity of the AGN by decomposing their optical to infrared SEDs with a host and an AGN component and compare it to the X-ray luminosity and their expected intrinsic relation. This way we select 20 X-ray under-luminous heavily obscured candidates and examine their X-ray and optical properties in more detail. We find evidence for a Compton-thick nucleus for six sources, a number lower than what expected from X-ray background synthesis models, which shows the limitations of our method.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S304: Multiwavelength AGN Surveys and Studies , October 2013 , pp. 245 - 246
Copyright
Copyright © International Astronomical Union 2014 

References

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