Results 81 to 90 of about 33,325 (239)

Precision surveying using very long baseline interferometry [PDF]

Radio interferometry measurements were used to measure the vector baselines between large microwave radio antennas. A 1.24 km baseline in Massachusetts between the 36 meter Haystack Observatory antenna and the 18 meter Westford antenna of Lincoln ...
Clark, T. A., Coates, R., Corey, B. E., Counselman, C. C., Hinteregger, H. F., Ma, C., Robertson, D. S., Ryan, J. W., Shapiro, I. I., Wittels, J. J.   +9 more
core   +1 more source

Evaluating SWOT in the Coastal Zone: Comparisons With Tide Gauge and Airborne LiDAR in the Bristol Channel and Severn Estuary, UK

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Traditional nadir altimeters struggle with coastal water surface elevation (WSE) measurement and fine‐scale river‐estuary interactions, due to land‐water signal interference and their wide inter‐track spacing. The wide‐swath Surface Water and Ocean Topography (SWOT) mission, using a new Ka‐band radar interferometer, aims to address these ...
Youtong Rong, Paul Bates, Jeff Neal, Paul Bell, Christine Gommenginger, Ian Dougal Lichtman, Christopher Banks, Francisco J. M. Calafat, Adrien Martin, Jennifer Brown, Richard Cooke, Christopher Balfour, Michela De Dominicis, Marta Payo Payo, Simon Williams, Laurent Amoudry, Stephen Chuter, Simon Neill, Jude Chisholm, Colin J. Gleason, John Kupiec, Matt Lewis   +21 more
wiley   +1 more source

Prospects for the Detection of the Sgr A* Photon Ring with Next-generation Event Horizon Telescope Polarimetry

The Astrophysical Journal Letters
The Event Horizon Telescope (EHT) has imaged two supermassive black holes, Messier 87* (M87*) and Sagittarius A* (Sgr A*), using very-long-baseline interferometry (VLBI).
Kaitlyn M. Shavelle, Daniel C. M. Palumbo   +1 more
doaj   +1 more source

The K-Band (24 GHz) Celestial Reference Frame Determined from Very Long Baseline Interferometry Sessions Conducted Over the Past 20 Years [PDF]

, 2023
Hana Krásná, David Gordon, Aletha de Witt, C. S. Jacobs   +3 more
openalex   +1 more source

Principles of very-long-baseline interferometry [PDF]

The basic principles of very-long-baseline interferometry as related to its use in the determination of vector baselines, polar motion, and earth rotation are presented. Aspects relevant to geodetic applications that involve observations of extragalactic
Shapiro, I. I.
core   +1 more source

Searching for coronal radio emission from protostars using Very-Long-Baseline Interferometry

, 2007
In order to directly study the role of magnetic fields in the immediate vicinity of protostars, we use Very-Long-Baseline Interferometry (VLBI), aiming at the detection of non-thermal centimetric radio emission.
A. Brunthaler, Allen, André, André, André, Bally, Beckwith, Bontemps, Calvet, Curiel, Dulk, E. Ros, Eiroa, Favata, Favata, Favata, Feigelson, Felli, Girart, Girart, Hamaguchi, J. Forbrich, K. M. Menten, Lay, Lay, Lim, Loinard, Looney, M. Massi, Massi, Massi, Montmerle, Moriarty-Schieven, Mundy, Phillips, Phillips, Preibisch, Rebull, Rodríguez, Rodríguez, Rodríguez, Rodríguez, Rodríguez, Schwab, Simon, Smith, Smith, Snell, Stapelfeldt, Tout, Tsuboi, Tsujimoto, Weigelt, Weintraub, Zinnecker   +54 more
core   +1 more source

Covalent Activation of the C‐type Lectin DC‐SIGN

Angewandte Chemie International Edition, Volume 65, Issue 3, 16 January 2026.
We introduce the first covalent activators of a C‐type lectin. Using orthogonal functional assays, NMR, MS/MS, and computational modeling, we delineate mechanisms from a functional electrophile‐first screen on dendritic cell‐specific intercellular adhesion molecule‐3‐grabbing non‐integrin (DC‐SIGN) that yields two modes: N‐hydroxysuccinimide (NHS ...
Jonathan Lefèbre, Maurice Besch, Noémi Csorba, Kristóf Garami, Zoltán Orgován, Gitta Schlosser, Iris Bermejo, Péter Ábrányi‐Balogh, György M. Keserű, Christoph Rademacher   +9 more
wiley   +1 more source

Geophysical applications of very-long-baseline interferometry [PDF]

Reviews of Modern Physics, 1991
Very-long-baseline interferometry (VLBI) is a novel observing technique for measuring the relative positions of widely separated points on the surface of the Earth with centimeter-level accuracy. Such accuracy is two or three orders of magnitude better than was available with classical techniques only a few decades ago.
openaire   +1 more source

VLBI observations of the most radio-loud, narrow-line quasar SDSS J094857.3+002225 [PDF]

, 2006
We observed the narrow-line quasar SDSS J094857.3+002225, which has the highest known radio loudness for a narrow-line Seyfert~1 galaxy (NLS1), at 1.7--15.4 GHz with the Very Long Baseline Array (VLBA). This is the first very-long-baseline interferometry
Asada, Keiichi, Doi, Akihiro, Inoue, Makoto, Kameno, Seiji, Nagai, Hiroshi, Wajima, Kiyoaki   +5 more
core   +2 more sources

Improved geodetic European very-long-baseline interferometry solution using models of antenna gravitational deformation

Annals of Geophysics, 2010
Very-long-baseline interferometry (VLBI) is used for establishing global geodetic networks where the coordinates attain a 1-mm level of precision. Technique-dependent bias can degrade the VLBI positioning accuracy if it is present and unaccounted for ...
Claudio Abbondanza, Pierguido Sarti, Monia Negusini   +2 more
doaj   +1 more source