Results 21 to 30 of about 478 (176)

Periodic Variations in the Vertical Velocities of Galactic Masers

Open Astronomy, 2016
We compiled published data on Galactic masers with VLBI-measured trigonometric parallaxes and determined the residual tangential, ∆Vcirc, and radial, ∆VR, velocities for 120 masers.
Bobylev V. V., Bajkova A. T., Shirokova K. S.   +2 more
doaj   +1 more source

Coincident ENA and Narrowband Radio Emissions as Diagnostics of Inward Plasma Transport at Saturn

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Saturn's kilometric radiation (SKR) and Energetic Neutral Atom (ENA) emissions are important diagnostics of the planet's magnetospheric dynamics, intensifying during global plasma injections and displaying characteristic planetary periodicity. Related to the SKR emissions are myriametric narrowband radio emissions that typically appear in the ...
J. Kinrade, S. V. Badman, S. Y. Wu, C. Paranicas, C. M. Jackman, L. S. Clare, C. K. Louis   +6 more
wiley   +1 more source

An Updated Reference Frame for the Galactic Inner Parsec

The Astrophysical Journal, 2023
Infrared observations of stellar orbits about Sgr A* probe the mass distribution in the inner parsec of the Galaxy and provide definitive evidence for the existence of a massive black hole.
Jeremy Darling, Jennie Paine, Mark J. Reid, Karl M. Menten, Shoko Sakai, Andrea Ghez   +5 more
doaj   +1 more source

Low Frequency Extensions of Cyclotron Maser Instability‐Generated Radio Emission: A Statistical View From Cassini at Saturn

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The Cassini spacecraft spent 13 years orbiting Saturn, quasi‐continuously measuring Saturn's radio emissions. One of the key elements of the radio spectrum at Saturn is the Saturn Kilometric Radiation (SKR), and several studies have been written on events called Low Frequency Extensions (LFEs) which represent strong, continuous extensions of ...
C. M. Jackman, A. R. Fogg, S. W. H. Cowley, G. Provan, H. Adamski, N. M. Besch, D. M. Hollman, S. Walker, M. J. Rutala, L. Lamy, C. K. Louis, E. P. O’Dwyer   +11 more
wiley   +1 more source

The 36 GHz Class I Methanol Maser in NGC 4945: A Tracer of Active Galactic Nucleus-driven Outflow–Interstellar Medium Interaction

The Astrophysical Journal Letters
Extragalactic Class I methanol masers are well-established tracers of bar-driven shocks in several nearby galaxies, but whether active galactic nucleus (AGN)-driven outflows can also excite such masers has remained unclear.
Xi Chen, Tian Yang, Shimin Song, Tiege McCarthy, Xiaoyun Xu, Simon Ellingsen, Shari Breen   +6 more
doaj   +1 more source

Penetration enhancement effects of topically applied crosslinked hyaluronic acid

International Journal of Cosmetic Science, Volume 48, Issue 4, Page 798-812, August 2026.
Cross‐linked hyaluronic acid (HA) was demonstrated to enhance the topical delivery of a variety of hydrophilic actives into the skin. This phenomenon was observed for both small molecules and macromolecules, the latter of which was analysed with MALDI mass spectrometry imaging (MALDI‐MSI).
Aaron Cohen, Raphael Legouffe, Krystal House, Paul Duhamel, Aurore Tomezyk, Mathieu Gaudin, Junhong Mao, David Bonnel   +7 more
wiley   +1 more source

Properties of H2O Masers and Their Associated Sources in Sagittarius B2

The Astrophysical Journal
We 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, Adam Ginsburg, Ciriaco Goddi, Álvaro Sánchez-Monge, Anika Schmiedeke, Desmond Jeff, Peter Schilke, Christopher De Pree   +7 more
doaj   +1 more source

CNGCs in Marchantia paleacea uncouple arbuscular mycorrhizal symbiosis and rhizoid development

New Phytologist, Volume 251, Issue 4, Page 2027-2040, August 2026.
Rhizoid growth and AM fungal infection are uncoupled. Summary In Marchantia paleacea, MpaDMI1‐dependent nuclear Ca2+ oscillations are essential for arbuscular mycorrhizal (AM) fungal colonisation, indicating that endosymbiosis‐mediated nuclear Ca2+ signalling is a conserved feature of land plant–AM symbiosis.
Anson Ho Ching Lam, Aisling Cooke, Jake Richardson, Myriam Charpentier   +3 more
wiley   +1 more source

A New Estimate of the Local Standard of Rest from Data on Young Objects

Open Astronomy, 2015
To estimate the peculiar velocity of the Sun with respect to the Local Standard of Rest (LSR), we use young objects in the Solar neighborhood with distance measurement errors within 10%–15%.
Bobylev V. V., Bajkova A. T.
doaj   +1 more source

Unusually Powerful Flare Phenomenon of the Water Maser in W51 and the Possibility of Detecting Gravitational Radiation from It

The Astrophysical Journal, 2023
Because of detailed monitoring of the 22.2 GHz water maser, carried out from 2021 October to 2023 May, a very powerful flare phenomenon was detected in the galactic object W51 near the radial velocity of 60 km s ^−1 with the amplitude of 140 kJy.
A. E. Volvach, L. N. Volvach, M. G. Larionov   +2 more
doaj   +1 more source