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What’s behind the corner: Maser emission in nearby and distant galaxies with the new radio facilities

Published online by Cambridge University Press:  07 February 2024

Andrea Tarchi Open the ORCID record for Andrea Tarchi [Opens in a new window] ,
Paola Castangia Open the ORCID record for Paola Castangia [Opens in a new window] ,
Gabriele Surcis Open the ORCID record for Gabriele Surcis [Opens in a new window] ,
Elisabetta Ladu Open the ORCID record for Elisabetta Ladu [Opens in a new window]  and
Elena Yu Bannikova
Andrea Tarchi*
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047, Selargius (CA), Italy.
Paola Castangia
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047, Selargius (CA), Italy.
Gabriele Surcis
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047, Selargius (CA), Italy.
Elisabetta Ladu
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047, Selargius (CA), Italy. Department of Physics, University of Cagliari, S.P.Monserrato-Sestu km 0,700, I-09042 Monserrato (CA), Italy
Elena Yu Bannikova
Affiliation:
INAF - Astronomical Observatory of Capodimonte, Salita Moiariello 16, Naples I-80131, Italy Institute of Radio Astronomy, National Academy of Sciences of Ukraine, Mystetstv 4, Kharkiv UA-61002, Ukraine
*
email: andrea.tarchi@inaf.it
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Abstract

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Extragalactic maser sources are unique tools to derive fundamental physical quantities of the host galaxies, e.g, geometry of accretion disks around super-massive black holes and precise black hole masses, and study in detail the interaction region of nuclear jets/outflows with the interstellar medium, in nearby and distant Active Galactic Nuclei. So far, however, extragalactic maser searches have yielded detection of few percent, and only relatively few maser sources have been found. Because of their unprecedented sensitivity, new upcoming facilities, like the SKA and the ngVLA, will allow to significantly increase the number of known (water) maser sources. This will lead to the chance of performing statistically-relevant studies of the maser phenomenon (and its occurrence), derive extragalactic masers luminosity functions, and ultimately (in particular, through the aid of longer-baselines arrays options) to perform the studies described above for larger samples and up to cosmological distances.

Keywords

masersgalaxy:activegalaxy:individual (TXS2226–184)
Type
Contributed 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. 50 - 53
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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