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A Holistic Search for Megamaser Disks and their Role in Feeding Supermassive Black Holes

Published online by Cambridge University Press:  07 February 2024

Anca Constantin Open the ORCID record for Anca Constantin [Opens in a new window] ,
Cameron Kelahan ,
C. Y. Kuo  and
J. A. Braatz
Anca Constantin*
Affiliation:
Department of Physics and Astronomy, James Madison University, Harrisonburg, VA 22807, USA.
Cameron Kelahan
Affiliation:
Department of Physics and Astronomy, James Madison University, Harrisonburg, VA 22807, USA. Southeastern Universities Research Association, NASA Goddard Space Flight Center
C. Y. Kuo
Affiliation:
Physics Department, National Sun Yat-Sen University, No. 70, Lien-Hai Rd, Kaosiung City 80424, Taiwan, R.O.C
J. A. Braatz
Affiliation:
National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA
*
email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

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If water megamaser disk activity is intimately related to the circumnuclear activity from accreting supermassive black holes, a thorough understanding of the co-evolution of galaxies with their central black holes should consider the degree to which the maser production correlates with traits of their host galaxies. This contribution presents an investigation of multiwavelength nuclear and host properties of galaxies with and without water megamasers, that reveals a rather narrow multi-dimensional parameter space associated with the megamaser emission. This “goldilocks” region embodies the availability of gas, the degree of dusty obscuration and reprocessing of the central emission, the black hole mass, and the accretion rate, suggesting that the disk megamaser emission in particular is linked to a short-lived phase in the intermediate-mass galaxy evolution, providing new tools for both 1) further constraining the growth process of the incumbent AGN and its host galaxy, and 2) significantly boosting the maser disk detection by efficiently confining the 22 GHz survey parameters.

Keywords

masersgalaxies: active
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S380: Cosmic Masers: Proper Motion toward the Next-Generation Large Projects , December 2022 , pp. 57 - 59
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

References

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