Results 61 to 70 of about 33,325 (239)

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

Variations in downslope activity and bottom current dynamics in a land‐detached submarine channel system since the Last Glacial Maximum

Sedimentology, EarlyView.
ABSTRACT The Gollum Channel System is a land‐detached large‐scale canyon‐channel system situated offshore southwest Ireland on the Northeast Atlantic margin. The system has been considered inactive with downslope gravity flows since the last glacial period, but geophysical data in some of its branches do suggest Holocene activity.
Lotte Verweirder, Aggeliki Georgiopoulou, Kobus Langedock, Fred Fourie, Martin White, Sara Benetti, Fabio Sacchetti, Wieter Boone, David Van Rooij   +8 more
wiley   +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

Tacrolimus and Hyaluronate Therapy Enhance Tear Film Stability in Canine Evaporative Dry Eye Disease

Veterinary Ophthalmology, EarlyView.
ABSTRACT Objective Evaluate the efficacy of a therapeutic approach combining tacrolimus and hyaluronate‐based lubricant for the management of evaporative dry eye disease (EDED) in dogs, compared to hyaluronate monotherapy. Procedures Fifty‐four client‐owned dogs with EDED were randomly assigned to three groups (n = 18 each): Group 1 received 0.03 ...
Lionel Sebbag, Sirlene F. Barbosa, Arianne P. Oriá   +2 more
wiley   +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

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

Nanoparticle Adjuvant Design Enhances Germinal Center Responses Targeting Conserved Subdominant Epitopes for Pan‐Coronavirus Vaccine Development

Advanced Science, Volume 13, Issue 7, 3 February 2026.
Current SARS‐CoV‐2 vaccines generate short‐lived, strain‐specific immunity. A polymeric TLR7 agonist nanoparticle (TLR7‐NP) adjuvant enhances lymph node targeting and promotes early and sustained germinal center responses toward conserved S2 epitopes of the spike protein.
Sijin Huang, Kanella M. Cohen, Liqiang Chen, Xiaowo Kang, Chang Liu, Megan E. Demouth, Wenxia Jiang, Alexander R. Maldeney, Rong Tong, Zunlong Ke, Kartik Chandran, Wei Luo, Qian Yin   +12 more
wiley   +1 more source

The Radio Fundamental Catalog. I. Astrometry

The Astrophysical Journal Supplement Series
We present an all-sky catalog of absolute positions and estimates of correlated flux density of 21,942 compact radio sources determined from processing interferometric visibility data of virtually all very long baseline interferometry (VLBI) observing ...
L. Y. Petrov, Y. Y. Kovalev
doaj   +1 more source