Results 141 to 150 of about 33,296 (260)

Time frequency requirements for radio interferometric earth physics [PDF]

Two systems of VLBI (Very Long Baseline Interferometry) are now applicable to earth physics: an intercontinental baseline system using antennas of the NASA Deep Space Network, now observing at one-month intervals to determine UTI for spacecraft ...
Fliegel, H. F., Thomas, J. B.
core   +1 more source

Very long baseline interferometry observations of the high-redshift X-ray-bright blazar SRGE J170245.3+130104 [PDF]

Yuanqi Liu, Tao An, Shaoguang Guo, Yingkang Zhang, Ailing Wang, Zhijun Xu, Г. А. Хорунжев, Yu. V. Sotnikova, Т. В. Муфахаров, А. Г. Михайлов, М. Г. Мингалиев   +10 more
openalex   +1 more source

Exploring the Asymmetry of the Solar Corona Electron Density with Very Long Baseline Interferometry [PDF]

, 2019
Dan Aksim, Alexey Melnikov, Dmitry Pavlov, S. Kurdubov   +3 more
openalex   +1 more source

Radio-optical scrutiny of the central engine in compact AGN

, 2004
We combine Very-Long-Baseline Interferometry (VLBI) data for $\sim100$ active galactic nuclei (AGN) available from the Very Large Baseline Array (VLBA) 2 cm imaging survey and optical spectroscopy to investigate the relationships in the emission-line ...
Arshakian, T. G., Chavushyan, V. H., Kadler, M., Ros, E., Zensus, J. A.   +4 more
core  

Estimation of Earth interior parameters from a Bayesian inversion of very long baseline interferometry nutation time series [PDF]

, 2008
L. Koot, Attilio Rivoldini, O. de Viron, V. Dehant   +3 more
openalex   +1 more source

Differential Very Long Baseline Interferometry (delta VLBI) spacecraft tracking system demonstration. Part 2: Data acquisition and processing [PDF]

A set of experiments in the use of Differential Very Long Baseline Interferometry (delta VLBI) for spacecraft navigation were completed. Data using both Voyager spacecraft and a single quasar were acquired during the Jupiter encounter time period.
Callahan, P. S., Christensen, C. S., Donivan, F. F., Moultrie, B., Wu, S. C.   +4 more
core   +1 more source

Very-long-baseline interferometry study of the flaring blazar TXS 1508+572 in the early Universe [PDF]

P. Benke, Andrea Gokus, Mikhail Lisakov, Leonid Gurvits, Florian Eppel, J. Heßdörfer, M. Kadler, Y. Y. Kovalev, E. Ros, F. Rösch   +9 more
openalex   +1 more source

Temporal Coherence of Single Photons Emitted by Hexagonal Boron Nitride Defects at Room Temperature. [PDF]

ACS Photonics
Martínez-Pons JV, Kim SK, Behrens M, Izquierdo-Molina A, Menendez Rua A, Paçal S, Ateş S, Viña L, Antón-Solanas C.   +8 more
europepmc   +1 more source

Adapting a Cryogenic Sapphire Oscillator for Very Long Baseline Interferometry [PDF]

, 2011
Sheperd S. Doeleman, Tao Mai, A. E. E. Rogers, John G. Hartnett, Michael E. Tobar, Nitin R. Nand   +5 more
openalex   +1 more source

Phase versus delay in geodetic VLBI [PDF]

The conditions for the applicability of the phase observable in very long baseline interferometry are discussed and examples of adequate observation programs are given.
Campbell, J.
core   +1 more source