Flares of the H2O Maser Emission in the Young Stellar Object GH2O 092.67+03.07 (IRAS 21078+5211) |
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| Authors: | V. V. Krasnov E. E. Lekht V. M. Minnebaev M. I. Pashchenko G. M. Rudnitskii A. M. Tolmachev |
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| Affiliation: | 1.Lebedev Physical Institute,Russian Academy of Sciences,Moscow,Russia;2.Lomonosov Moscow State University,Sternberg Astronomical Institute,Moscow,Russia;3.Open Joint-Stock Company “Pulsar Research and Production Association”,Moscow,Russia;4.Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Physical Institute,Russian Academy of Sciences,Pushchino, Moscow oblast,Russia |
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| Abstract: | The results of monitoring the H2O maser observed toward the region GH2O 092.67+03.07 (IRAS 21078+5211) located in the Giant Molecular Cloud Cygnus OB7 are presented. The observations were carried out with the 22-m radio telescope of the Pushchino Radio Astronomy Observatory in 2006–2017. Strong flares of the H2O maser emission with flux densities up to 19 800 Jy were detected. The flares exhibited both global (over the source) and local characters. All the flares were accompanied by strong variations in the H2O spectra within the corresponding radial-velocity ranges. Individual H2O components form both compact clusters and chains 1–2-AU long. Analysis of the variations of the fluxes, radial velocities, and line shapes of features during the flares showed that the medium may be strongly fragmented, with small-scale turbulent motions taking place in the H2Omaser region. |
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