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Radio continuum of galaxies with H2O megamaser disks

Published online by Cambridge University Press:  16 July 2018

F. Kamali ,
C. Henkel ,
A. Brunthaler ,
C. M. V. Impellizzeri ,
K. M. Menten ,
J. A. Braatz ,
J. E. Greene ,
M. J. Reid ,
J. J. Condon  and
K. Y. Lo
...Show all authors
F. Kamali
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany email: fkamali@mpifr-bonn.mpg.de
C. Henkel
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany email: fkamali@mpifr-bonn.mpg.de Astron. Dept., King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
A. Brunthaler
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany email: fkamali@mpifr-bonn.mpg.de
C. M. V. Impellizzeri
Affiliation:
National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA Joint ALMA Office, Alonso de Córdova 3107, Vitacura, Santiago, Chile
K. M. Menten
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany email: fkamali@mpifr-bonn.mpg.de
J. A. Braatz
Affiliation:
National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA
J. E. Greene
Affiliation:
Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
M. J. Reid
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
J. J. Condon
Affiliation:
National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA
K. Y. Lo
Affiliation:
National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA
C. Y. Kuo
Affiliation:
Department of Physics, National Sun Yat-Sen University, No.70, Lianhai Road, Gushan Dist., Kaohsiung City 804, Taiwan (R.O.C.)
E. Litzinger
Affiliation:
Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Campus Hubland Nord, Emil-Fischer-Str. 31, 97074 Würzburg, Germany Dr. Remeis-Observatory, Erlangen Centre for Astroparticle, Physics, University of Erlangen-Nüremberg, Sternwartstr. 7, 96049 Bamberg, Germany
M. Kadler
Affiliation:
Dr. Remeis-Observatory, Erlangen Centre for Astroparticle, Physics, University of Erlangen-Nüremberg, Sternwartstr. 7, 96049 Bamberg, Germany
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Abstract

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In our attempt to investigate the basic active galactic nucleus (AGN) paradigm requiring a centrally located supermassive black hole (SMBH), a close to Keplerian accretion disk and a jet perpendicular to its plane, we have searched for radio continuum in galaxies with H2O megamasers in their disks. We observed 18 such galaxies with the Very Large Baseline Array in C band (5 GHz, ~2 mas resolution) and we detected 5 galaxies at 8 σ or higher levels. For those sources for which the maser data is available, the positions of masers and those of the 5 GHz radio continuum sources coincide within the uncertainties, and the radio continuum is perpendicular to the maser disk’s orientation within the position angle uncertainties.

Keywords

Galaxies: active–Galaxies: jets–Galaxies: nuclei - Galaxies: Seyfert–Radio continuum: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S336: Astrophysical Masers: Unlocking the Mysteries of the Universe , September 2017 , pp. 139 - 140
Copyright
Copyright © International Astronomical Union 2018 

References

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