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Cambridge University Press (CUP), Proceedings of the International Astronomical Union, S336(13), p. 422-425

DOI: 10.1017/s1743921317010869

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H2O MegaMasers: RadioAstron success story

Journal article published in 2017 by Willem Baan, Alexey Alakoz, Tao An ORCID, Simon Ellingsen, Christian Henkel, Hiroshi Imai, Vladimir Kostenko, Ivan Litovchenko, James Moran, Andrej Sobolev, Alexander Tolmachev
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractThe RadioAstron space-VLBI mission has successfully detected extragalactic H2O MegaMaser emission regions at very long Earth to space baselines ranging between 1.4 and 26.7 Earth Diameters (ED). The preliminary results for two galaxies, NGC 3079 and NGC 4258, at baselines longer than one ED indicate masering environments and excitation conditions in these galaxies that are distinctly different. Further observations of NGC 4258 at even longer baselines are expected to reveal more of the physics of individual emission regions.

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