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Modelling interstellar water masers
Astrophysics and Space Science, 1995Radiative transfer calculations for interstellar H2O have been performed using accelerated A-iteration (ALI) techniques. The results show strong maser action from known maser transitions, as well as predicting new strong maser transitions for ν > 1.5 THz. © 1995 Kluwer Academic Publishers.
Yates, JA, Gray, MD, Field, D
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An unbiased pilot survey for Galactic water masers
Monthly Notices of the Royal Astronomical Society, 2010 The Australia Telescope Compact Array has been used in a fast surveying mode to study the 22-GHz transition of water in two small sample regions of the southern Galactic plane.
Shari Breen, J L Caswell
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Water Masers in the Galactic Center
Proceedings of the International Astronomical Union, 2022AbstractThe Central Molecular Zone (CMZ) makes up roughly the inner 500 pc of the Milky Way and has a large amount of dense hot gas, strong magnetic fields, and highly energetic particles. The Survey of Water and Ammonia in the Galactic Center (SWAG) is a major imaging line survey using the Australia Telescope Compact Array with the goal to map out the
Dylan Ward, Jürgen Ott, David S. Meier
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A gravitationally lensed water maser in the early Universe [PDF]
Nature, 2008 9 pages, 2 figues, accepted for publication in Nature (18 December 2008)
Violette Impellizzeri +2 more
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Interstellar hydroxyl and water masers and formaldehyde masers and dasars
Reports on Progress in Physics, 1974A review of the observational data on anomalous emission by OH, H2O and H2CO molecules and on anomalous absorption by H2CO molecules. Various theories advanced to account for these data and some models of a few particular sources are discussed.
D ter Haar, M A Pelling
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Water masers in red supergiants
Astronomical & Astrophysical Transactions, 2006Results of long-term monitoring of circumstellar water maser sources in red supergiants are reviewed. The observations were carried out in 1980–2006 on the RT-22 radio telescope at Pushchino Radio Astronomy Observatory. We discuss the results for the semiregular variable M-supergiant VX Sgr and non-variable M-supergiant IRC–10414.
M. I. Pashchenko +3 more
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Discovery of four water masers in the Small Magellanic Cloud
Monthly Notices of the Royal Astronomical Society, 2013 We report the detection of four water masers within the Small Magellanic Cloud (SMC): two discovered with the 70-m Tidbinbilla radio telescope, and two discovered with the Australia Telescope Compact Array (ATCA).
Simon Ellingsen +2 more
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Monitoring Water Masers in Star-Forming Regions [PDF]
Astrophysics and Space Science, 2005 9 pages, 1 table, 11 figures. Accepted for publ. in Ap&SpSci. Refereed contribution to "Dense Molecular Gas around Protostars and in Galactic Nuclei", European Workshop 2004 on Astronomical Molecules. Eds. Y. Hagiwara, W.A. Baan, H.J.
Riccardo Cesaroni +2 more
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Efficient detection of water masers
Nature, 1988During the past 15 years almost 190 natural sources of 22 GHz water maser emission have been found in the dusty circumstellar shells of late-type stars undergoing mass-loss. Numbered among these sources are ∼75% of the Mira variables within 400 pc of the Sun1, although only 34% of Miras in general are associated with OH masers2.
B. M. Lewis, D. Engels
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1993
The excitation of maser emission in millimeter and submillimeter transitions of interstellar and circumstellar water is considered. Using an escape probability method, the equilibrium populations in 349 rotational states of both ortho- and para-water have been determined under varying conditions of gas temperature, density, water abundance and ...
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The excitation of maser emission in millimeter and submillimeter transitions of interstellar and circumstellar water is considered. Using an escape probability method, the equilibrium populations in 349 rotational states of both ortho- and para-water have been determined under varying conditions of gas temperature, density, water abundance and ...
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