Results 101 to 110 of about 11,945,723 (183)

Introduction to very-long-baseline interferometry [PDF]

open access: yes, 1973
Long-baseline interferometry achieves high resolution by using two or more widely separated radio telescopes and recording video signals on magnetic tapes, which are later brought together and cross-correlated.
Cohen, Marshall H.
core  

PHOTON MASS and VERY LONG BASELINE INTERFEROMETRY

open access: yes, 2010
A relation between the photon mass, its frequency, nu, and the deflection parameter, gamma, determined by experimentalists (that characterizes the contribution of space curvature to gravitational deflection) is found.
ESLLEY SCATENA   +7 more
core   +1 more source

A Geodetic and Astrometric VLBI Experiment at 22/43/88/132 GHz

open access: yesThe Astronomical Journal
Extending geodetic and astrometric Very Long Baseline Interferometry (VLBI) observations from traditional centimeter wavebands to millimeter wavebands offers numerous scientific potentials and benefits. However, it was considered quite challenging due to
Shuangjing Xu   +16 more
doaj   +1 more source

Competing Effects of Elastic Heterogeneity and Viscous Flow on Interseismic Coupling at Cascadia

open access: yesGeophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Interseismic coupling maps are important tools for estimating future earthquake hazard at subduction zones. Often interseismic coupling is estimated from surface velocities using a homogeneous elastic Earth model. However, inversions that incorporate viscoelastic mantle flow or elastic heterogeneity show that each can change the spatial ...
E. M. Sherrill   +2 more
wiley   +1 more source

Differential SAR Interferometry with TerraSAR-X TOPS Data: Mexico City Subsidence Results [PDF]

open access: yes, 2012
In this paper we investigate the possibility to exploit TOPS data to measure ground displacement movements by means of Differential SAR Interferometry (DInSAR). Several critical points (i.e.
Wollstadt, Steffen   +4 more
core  

A Repeating Fast Radio Burst Source in the Outskirts of a Quiescent Galaxy

open access: yesThe Astrophysical Journal Letters
We report the discovery of the repeating fast radio burst (FRB) source FRB 20240209A using the Canadian Hydrogen Intensity Mapping Experiment (CHIME)/FRB telescope.
Vishwangi Shah   +48 more
doaj   +1 more source

Deformation monitoring using scanning synthetic aperture radar interferometry [PDF]

open access: yes, 2009
textThis dissertation provides the first demonstration of scanning synthetic aperture radar (ScanSAR) advanced interferometry processing for measuring surface deformation.
Gudipati, Krishna Vikas, 1979-
core  

Bayesian Constraints on the Ring Ellipticity of M87* 2017 Using Themis

open access: yesThe Astrophysical Journal
Measuring the properties of black hole images has the potential to constrain deviations from general relativity on horizon scales. Of particular interest is the ellipticity of the ring that is sensitive to the underlying spacetime.
Paul Tiede, Avery E. Broderick
doaj   +1 more source

VLBI Observations of SN 2012AU Reveal a Compact Radio Source a Decade Post Explosion

open access: yesThe Astrophysical Journal
Three leading models have been put forth to justify the observed radio re-brightening associated with stripped-envelope supernovae (SESNe) years post-explosion: radiation from an emerging pulsar wind nebula (PWN), shock interaction with a dense ...
Mattias Lazda   +15 more
doaj   +1 more source

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