Results 11 to 20 of about 36,409 (218)
Photon Mass and Very Long Baseline Interferometry [PDF]
International Journal of Modern Physics D, 2010 A relation between the photon mass, its frequency, $\nu$, and the deflection parameter, $\gamma$, determined by experimentalists (which characterizes the contribution of space curvature to gravitational deflection) is found. This amazing result allows us
Accioly A. +4 more
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Observation of double star by long-baseline interferometry [PDF]
EAS Publications Series, 2014 This paper serves as a reference on how to estimate the parameters of binary stars and how to combine multiple techniques, namely astrometry, interferometry and radial velocities.Comment: F. Millour, A. Chiavassa, L. Bigot, O. Chesneau, A. Meilland \& P.
Bonneau, Daniel +2 more
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Introduction to very-long-baseline interferometry [PDF]
Proceedings of the IEEE, 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.
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Very-long-baseline interferometry experiments [PDF]
1970 Antennas and Propagation Society International Symposium, 1970 VLB observations have been made at many wavelengths from 2.8 to 270 cm. The highest resolution was obtained on the Greenbank-Crimea baseline, 2.9 x 10^8 wavelengths long at 2.8 cm on which two quasars showed interference fringes.
Cohen, M. H.
core +3 more sources
Lorentz symmetry and Very Long Baseline Interferometry [PDF]
Physical Review D, 2016 Lorentz symmetry violations can be described by an effective field theory framework that contains both General Relativity and the Standard Model of particle physics called the Standard-Model extension (SME). Recently, post-fit analysis of Gravity Probe B
Hees, A. +2 more
core +6 more sources
Imaging "Pinwheel"nebulae with optical long-baseline interferometry [PDF]
Proceedings of the International Astronomical Union, 2010 Dusty Wolf-Rayet stars are few but remarkable in terms of dust production rates (up to one millionth of solar mass per year). Infrared excesses associated to mass-loss are found in the sub-types WC8 and WC9. Few WC9d stars are hosting a "pinwheel" nebula,
Adriane Liermann +10 more
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Stabilization versus flexibility: Detergent-dependent trade-offs in neurotensin receptor 1 GPCR ensembles. [PDF]
Protein SciAbstract 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 ...
Bower JB +6 more
europepmc +2 more sources
Very Long Baseline Interferometry [PDF]
Highlights of Astronomy, 1989 The technique of very long baseline interferometry (VLBI) has undergone two decades of steady growth and refinement since its inception in 1967. In the beginning, only crude measurements of visibility on single baselines were possible. Now 18-station arrays have been used to produce images with dynamic ranges exceeding 2000:1; relative motions of ...
openaire +2 more sources
Infrared Long Baseline Interferometry [PDF]
Highlights of Astronomy, 1989 During the last few years, two new instruments using long baseline interferometry have been constructed for high angular resolution astronomy in the mid-infrared spectral region (8-12 μxm). One called SOIRDETE-Synthese d’Overture en InfraRouge a DEux TElescopes-was built by J. Gay and his collaborators at CERGA.
W.C. Danchi +3 more
openaire +1 more source
Single-band VLBI Absolute Astrometry
The Astronomical Journal, 2023 The ionospheric path delay impacts single-band, very long baseline interferometry (VLBI) group delays, which limits their applicability for absolute astrometry.
Leonid Petrov
doaj +1 more source