Results 81 to 90 of about 256 (175)

First Detection of CH3OD in Prestellar Cores

The Astrophysical Journal
The isotopic ratios of deuterated methanol derived around protostars are commonly used to infer the physical conditions under which they formed in the earlier prestellar stage.
Beatrice M. Kulterer, Asunción Fuente, Maria N. Drozdovskaya, Silvia Spezzano, Gisela Esplugues, David Navarro-Almaida, Marina Rodríguez Baras, Angèle Taillard, Karin Öberg   +8 more
doaj   +1 more source

Innovative approach for modelling gravity-induced signal path variations of VLBI radio telescopes

Earth, Planets and Space
Gravitationally induced deformation of the receiving unit of radio telescopes used for Very Long Baseline Interferometry (VLBI) distorts the observations and biases the deduced products.
Michael Lösler, Cornelia Eschelbach, Ansgar Greiwe, Boye Zhou, Lucia McCallum   +4 more
doaj   +1 more source

Stellar mass loading drives dissipation and reacceleration in AGN jets: Explaining VLBI-Gaia offsets and constraining jet power

Astronomy & Astrophysics
Context. Recent Very Long Baseline Interferometry (VLBI) and Gaia astrometry reveal systematic milliarcsecond-scale offsets between the radio and optical centroids of active galactic nuclei (AGNs).
Fichet de Clairfontaine G., Perucho M., Martí J. M., Kovalev Y. Y.   +3 more
doaj   +1 more source

Origin and Evolution of Enceladus's Tidal Dissipation. [PDF]

Space Sci Rev, 2023
Nimmo F, Neveu M, Howett C.
europepmc   +1 more source

Fermi Unassociated Sources in the MeerKAT Absorption Line Survey

The Astrophysical Journal
Over 2000 γ -ray sources identified by the Large Area Telescope on NASA's Fermi Gamma-ray Space Telescope are considered unassociated, meaning that they have no known counterparts in any other frequency regime.
Morgan Himes, Preshanth Jagannathan, Dale A. Frail, Frank Schinzel, Neeraj Gupta, S. A. Balashev, F. Combes, P. P. Deka, H.-R. Klöckner, E. Momjian, J. D. Wagenveld   +10 more
doaj   +1 more source

Metrics of Astrometric Variability in the International Celestial Reference Frame. I. Statistical Analysis and Selection of the Most Variable Sources

The Astrophysical Journal Supplement Series
Using very long baseline interferometry data for the sources that comprise the third International Celestial Reference Frame (ICRF3), we examine the quality of the formal source-position uncertainties of ICRF3 by determining the excess astrometric ...
Phil Cigan, Valeri V. Makarov, Nathan J. Secrest, David Gordon, Megan C. Johnson, Sebastien Lambert   +5 more
doaj   +1 more source

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, Okouma P, Maina E, Ianjamasimanana R, Zambou S.   +4 more
europepmc   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

The use of astronomy VLBA campaign MOJAVE for geodesy. [PDF]

J Geod, 2021
Krásná H, Petrov L.
europepmc   +1 more source

Orbital period change of Dimorphos due to the DART kinetic impact. [PDF]

Nature, 2023
Thomas CA, Naidu SP, Scheirich P, Moskovitz NA, Pravec P, Chesley SR, Rivkin AS, Osip DJ, Lister TA, Benner LAM, Brozović M, Contreras C, Morrell N, Rożek A, Kušnirák P, Hornoch K, Mages D, Taylor PA, Seymour AD, Snodgrass C, Jørgensen UG, Dominik M, Skiff B, Polakis T, Knight MM, Farnham TL, Giorgini JD, Rush B, Bellerose J, Salas P, Armentrout WP, Watts G, Busch MW, Chatelain J, Gomez E, Greenstreet S, Phillips L, Bonavita M, Burgdorf MJ, Khalouei E, Longa-Peña P, Rabus M, Sajadian S, Chabot NL, Cheng AF, Ryan WH, Ryan EV, Holt CE, Agrusa HF.   +48 more
europepmc   +1 more source