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Water megamaser emission in hard X-ray selected, highly obscured AGNs

Published online by Cambridge University Press:  07 February 2024

Paola Castangia Open the ORCID record for Paola Castangia [Opens in a new window] ,
Andrea Tarchi Open the ORCID record for Andrea Tarchi [Opens in a new window] ,
Roberto Della Ceca ,
Alessandro Caccianiga ,
Paola Severgnini Open the ORCID record for Paola Severgnini [Opens in a new window] ,
Gabriele Surcis Open the ORCID record for Gabriele Surcis [Opens in a new window] ,
Andrea Melis ,
Francesca Panessa ,
Angela Malizia  and
Loredana Bassani
Paola Castangia*
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047, Selargius (CA), Italy.
Andrea Tarchi
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047, Selargius (CA), Italy.
Roberto Della Ceca
Affiliation:
INAF-Osservatorio Astronomico di Brera, via Brera 28, 20121 Milan, Italy
Alessandro Caccianiga
Affiliation:
INAF-Osservatorio Astronomico di Brera, via Brera 28, 20121 Milan, Italy
Paola Severgnini
Affiliation:
INAF-Osservatorio Astronomico di Brera, via Brera 28, 20121 Milan, Italy
Gabriele Surcis
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047, Selargius (CA), Italy.
Andrea Melis
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047, Selargius (CA), Italy.
Francesca Panessa
Affiliation:
INAF-Istituto di Astrofisica e Planetologia Spaziali di Roma (IAPS), Via del Fosso del Cavaliere 100, 00133 Roma, Italy
Angela Malizia
Affiliation:
INAF-Osservatorio di Astrofisica e Scienza dello Spazio, via P. Gobetti 101, I-40129 Bologna, Italy
Loredana Bassani
Affiliation:
INAF-Osservatorio di Astrofisica e Scienza dello Spazio, via P. Gobetti 101, I-40129 Bologna, Italy
*
email: paola.castangia@inaf.it
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Abstract

We took profit of the availability of large catalogs of active galact nuclei (AGNs) selected in the hard X-ray from satellite missions (e. g., INTEGRAL, Swift/BAT) to investigate the relation between the occurrence of water maser emission and the X-ray properties of the nuclei on a statistically meaningful basis. Our studies demonstrate that the hard X-ray selection may significantly enhance the maser detection rate over comparably large optical or infrared surveys. Here, we report on a recent survey to search for water maser emission with the Sardinia Radio Telescope (SRT) in a sample of heavily absorbed AGN taken from the 70 months Swift/BAT catalog.

Keywords

masersgalaxy: activegalaxy: nuclei
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. 54 - 56
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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References

Castangia, P., Tarchi, A., Caccianiga, A., Severgnini, P., Della Ceca, R. 2019, A&A, 629A, 25C Google Scholar
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