Results 71 to 80 of about 36,409 (218)

Disentangling Confused Stars at the Galactic Center with Long Baseline Infrared Interferometry

, 2012
We present simulations of Keck Interferometer ASTRA and VLTI GRAVITY observations of mock star fields in orbit within ~50 milliarcseconds of Sgr A*. Dual-field phase referencing techniques, as implemented on ASTRA and planned for GRAVITY, will provide ...
A. M. Ghez, Do, Do, Dodds-Eden, Esposito, Genzel, Ghez, Ghez, Ghez, Gillessen, J. A. Eisner, J. D. Monnier, J. Woillez, J.-U. Pott, Jordan M. Stone, Lane, Lawson, P. Wizinowich, Paumard, Reid, Shao, Weinberg   +21 more
core   +1 more source

Satellite Data Trace Seasonal Freshwater Dispersion in Hudson and James Bays

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Freshwater dispersal controls stratification, circulation, and biogeochemical processes in Hudson and James Bay (HJB); however, limited field observations hinder understanding of how different freshwater types drive change. This study uses Aqua‐Moderate Resolution Imaging Spectroradiometer and Soil Moisture and Ocean Salinity‐Microwave Imaging
Atreya Basu, Simon Bélanger, Zou Zou A. Kuzyk, Rakesh K. Singh, Soham Mukherjee, Pierre Larouche, Alessia C. Guzzi, Emma L. Ausen, Greg McCullough, Jens K. Ehn   +9 more
wiley   +1 more source

Supermassive Black Hole Spin Constraints from Polarimetry in an Equatorial Disk Model

The Astrophysical Journal Letters
The Event Horizon Telescope has released polarized images of the supermassive black holes Messier 87* (M87*) and Sagittarius A* accretion disks. As more images are produced, our understanding of the average polarized emission from near the event horizon ...
Daniel C. M. Palumbo
doaj   +1 more source

A very long baseline interferometry sky survey [PDF]

A systematic very long baseline interferometry (VLBI) sky survey, undertaken to find a suitable set of compact celestial radio sources from which a more complete VLBI reference frame can be constructed, discussed.
Morabito, D. D., Preston, R. A.
core   +1 more source

Deep, ultra-high-resolution radio imaging of submillimetre galaxies using Very Long Baseline Interferometry [PDF]

, 2010
We present continent-scale VLBI - obtained with the European VLBI Network (EVN) at a wavelength of 18cm - of six distant, luminous submm-selected galaxies (SMGs).
A. D. Biggs, Alexander, Alexander, Appleton, Barnes, Baugh, Beelen, Biggs, Biggs, Blain, Blain, Blain, Capak, Carilli, Chapman, Chapman, Clements, Condon, Condon, Condon, Condon, Coppin, Coppin, Coppin, Coppin, Daddi, Davé, Di Matteo, Downes, Downes, Dunne, Dye, Eales, Ferrarese, Garrett, Gebhardt, Greve, Greve, Greve, Hernquist, Hildebrand, Hinshaw, Holland, Hopkins, Hopkins, Hopkins, Hopkins, Hopkins, Hopkins, Hopkins, Häring, Ibar, Ibar, Ibar, Ivison, Ivison, Ivison, Ivison, Ivison, Ivison, J. D. Younger, Kormendy, Kovács, Lacki, Lacki, Lacy, Laurent, Laurent, Lonsdale, Lonsdale, Lutz, Magorrian, Menéndez-Delmestre, Menéndez-Delmestre, Mihos, Mihos, Momjian, Momjian, Momjian, Momjian, Murphy, Narayanan, Narayanan, Narayanan, Novak, Page, Papadopoulos, Pope, R. J. Ivison, Robertson, Schinnerer, Scott, Scoville, Silk, Smail, Springel, Swinbank, Swinbank, Tacconi, Tacconi, Thompson, Tremaine, Valiante, Wang, Wang, Weingartner, Wright, Yang, Younger, Younger, Younger, Younger, Younger, Younger, Younger, Yun, Yun   +116 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

Perspective of long baseline interferometry

, 2000
This article is a sort of sequel of the earlier extensive review by Saha (1999a) where emphasis was laid down on the ground based single aperture, as well as on the working long baseline optical interferometers (LBI) situated at the various observatories across the globe that are producing a large amount of astronomical results.
Saha, S K, Morel, S.
openaire   +2 more sources

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

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

Testing Relativistic Effect of Propagation of Gravity by Very-Long Baseline Interferometry

, 2001
It is shown that the finite speed of gravity affects very-long baseline interferometric observations of quasars during the time of their line-of-sight close angular encounter with Jupiter. The next such event will take place in 2002, September 8.
Kopeikin, Sergei M.
core   +1 more source