Results 61 to 70 of about 33,296 (260)

Very Long Baseline Interferometry of Solar Flares [PDF]

International Astronomical Union Colloquium, 1983
The aim of the VLBI experiment was a search for the occurrence of subarc- second microwave emission centres as tracers of the initial energy release in solar flares. The observations extended over the period April 28 to May 3, 1981 and were performed with the 25 m telescopes at Onsala (Sweden) and Dwingeloo (Netherlands) at a wavelength of 18 cm (1663 ...
J. Kuijpers, K. F. Tapping, D. Graham
openaire   +1 more source

Measuring Black Hole Light Echoes with Very Long Baseline Interferometry

The Astrophysical Journal Letters
Light passing near a black hole can follow multiple paths from an emission source to an observer due to strong gravitational lensing. Photons following different paths take different amounts of time to reach the observer, which produces an echo signature
George N. Wong, Lia Medeiros, Alejandro Cárdenas-Avendaño, James M. Stone   +3 more
doaj   +1 more source

TEMPUS: A proposal for international time transfer and precision tracking satellite [PDF]

, 1979
Very Long Baseline Interferometry (pulsars), Television relay via satellite, portable clocks, Navigation Technology Satellite, and Loran C are described and ...
Holmes, D. C.
core   +1 more source

Aldebaran's angular diameter: how well do we know it? [PDF]

, 2005
The bright, well-known K5 giant Aldebaran, alpha Tau, is probably the star with the largest number of direct angular diameter determinations, achieved over a long time by several authors using various techniques.
A. Richichi, Bell, Bordé, Currie, Di Benedetto, Evans, Hatzes, Hatzes, Henry, Hofmann, Kervella, Knoechel, Mozurkewich, Percheron, Perrin, Quirrenbach, Richichi, Richichi, Richichi, Richichi, Richichi, Richichi, Richichi, Ridgway, Setiawan, Setiawan, V. Roccatagliata, White, Wittkowski   +28 more
core   +2 more sources

Stabilization versus flexibility: Detergent‐dependent trade‐offs in neurotensin receptor 1 GPCR ensembles

Protein Science, Volume 35, Issue 2, February 2026.
Abstract Detergents provide essential membrane‐mimetic environments for studying G protein‐coupled receptors (GPCRs), but their molecular impact on receptor energetics remains incompletely understood. We combined ligand binding, thermostability measurements, and atomistic molecular dynamics to dissect detergent‐ versus ligand‐driven stabilization in a ...
James B. Bower, Wijnand J. C. van der Velden, Karen P. Gomez, Mingzhe Pan, Fabian Bumbak, Nagarajan Vaidehi, Joshua J. Ziarek   +6 more
wiley   +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

Multiwavelength Observations of Relativistic Jets from General Relativistic Magnetohydrodynamic Simulations

Galaxies, 2018
This work summarizes a program intended to unify three burgeoning branches of the high-energy astrophysics of relativistic jets: general relativistic magnetohydrodynamic (GRMHD) simulations of ever-increasing dynamical range, the microphysical theory of ...
Richard Anantua, Roger Blandford, Alexander Tchekhovskoy   +2 more
doaj   +1 more source

Impact of atmospheric turbulence on geodetic very long baseline interferometry [PDF]

, 2010
We assess the impact of atmospheric turbulence on geodetic very long baseline interferometry (VLBI) through simulations of atmospheric delays. VLBI observations are simulated for the two best existing VLBI data sets: The continuous VLBI campaigns CONT05 ...
Haas, Rüdiger, Nilsson, Tobias
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