Results 71 to 80 of about 203 (158)
Properties of H2O Masers and Their Associated Sources in Sagittarius B2
The Astrophysical JournalWe present high-resolution Karl G. Jansky Very Large Array observations of the 22 GHz H _2 O maser line in the extended Sagittarius B2 cloud. We detect 499 H _2 O masers across the observed velocities between −39 and 172 km s ^−1 .
Nazar Budaiev +7 more
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Observing astrophysical water masers Observing windows Masers as diagnostics Beaming Precise measurements Shocks Magnetic fields Multiple lines Pumping conditions constrain physical conditions n, T ...
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Water Maser Emission from Comets
The Astronomical Journal, 2000 We used the Very Large Array in 1997 January, February, March, and April to observe comet Hale-Bopp in the 1.35 cm H2O line. No line was detected in any of the four observations, and upper limits to the H2O line emission are presented. These upper limits are typically around 60 mJy, which is much lower than the ~2.5 Jy flux density reported for this ...
Ashley P. Graham +4 more
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Inner Workings: Astronomers are redrawing our corner of the Milky Way. [PDF]
Proc Natl Acad Sci U S A, 2021 Croswell K.
europepmc +1 more source
Excitation of millimeter and submillimeter water masers
The Astrophysical Journal, 1991 The excitation of maser emission in millimeter and submillimeter transitions of interstellar and circumstellar water is considered. An escape probability method is used to determine the equilibrium populations in 349 rotational states of both ortho- and para-water under varying conditions of gas temperature, density, water abundance, and radiation ...
David A. Neufeld, Gary J. Melnick
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Radio Astronomical Antennas in the Central African Region to Improve the Sampling Function of the VLBI Network in the SKA Era? [PDF]
Sensors (Basel), 2022 Atemkeng M +4 more
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Application of Chemical Metallization of Photopolymer Structures Additive Technology in the Production of Components for Electronic Devices. [PDF]
Micromachines (Basel), 2023 Proyavin MD +8 more
europepmc +1 more source
Water masers in NLS1 galaxies [PDF]
Proceedings of Narrow-Line Seyfert 1 Galaxies and their place in the Universe — PoS(NLS1), 2011 Andrea Tarchi +4 more
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Nuclear Water Maser Emission in Centaurus A
, 2013 We report the detection of a 22GHz water maser line in the nearest (D~3.8Mpc) radio galaxy Centaurus A using the Australia Telescope Compact Array (ATCA). The line is centered at a velocity of ~960kms-1, which is redshifted by about 400kms-1 from the systemic velocity. Such an offset, as well as the width of ~120kms-1, could be consistent with either a
Ott, Juergen +11 more
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