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Radio Properties of AGN

Published online by Cambridge University Press:  25 July 2014

Hayk V. Abrahamyan  and
Areg M. Mickaelian
Hayk V. Abrahamyan
Affiliation:
Byurakan Astrophysical Observatory (BAO), Armenia Email: [email protected], [email protected]
Areg M. Mickaelian
Affiliation:
Byurakan Astrophysical Observatory (BAO), Armenia Email: [email protected], [email protected]
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Abstract

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To study the radio properties of AGN, we cross-correlate and investigate Veron-Cetty & Veron catalog of QSOs and Active Galaxies (v.13, 2010) with a number of radio catalogs: NVSS, FIRST, GB6, 87GB, SUMSS, WISH, WENSS, and 7C. This catalog contains 168,940 objects with positional accuracy of mostly 1 arcsec, though many positions have larger errors. We use new cross-correlation software based on accuracy of each object independently. In this software we take into account errors for each source and take identifications with errors within 3 sigma. Altogether, we find ~16,000 AGN having radio detection in any of the listed catalogs. Using all data from radio catalogs, we derive a homogeneous sample of radio AGN. The sample allows accomplish several tasks, including study of the distribution of radio sources by activity types, differences in physical properties of radio-loud and radio-quiet AGN, luminosity functions for various types of radio AGN, study of the q parameter by AGN types and its evolution, etc.

Keywords

radio catalogscross-correlationsNVSSFIRSTQSOblazarsAGN
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S304: Multiwavelength AGN Surveys and Studies , October 2013 , pp. 102 - 103
Copyright
Copyright © International Astronomical Union 2014 

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