Results 51 to 60 of about 22,374 (269)

Scientific Applications of e-VLBI [PDF]

, 2009
The advantages of e-VLBI over traditional media-recorded VLBI are briefly discussed. These advantages lie in two broad areas, those which reduce the operational burden of VLBI and those which enable wholly new kinds of observations to be made.
John E. Conway, Conway, John, Conway, John,   +2 more
core   +1 more source

EHT-HOPS Pipeline for Millimeter VLBI Data Reduction [PDF]

Astrophysical Journal, 2019
We present the design and implementation of an automated data calibration and reduction pipeline for very long baseline interferometric (VLBI) observations taken at millimeter wavelengths. These short radio wavelengths provide the best imaging resolution
L. Blackburn, Chi-kwan Chan, G. Crew, V. Fish, S. Issaoun, Michael D. Johnson, M. Wielgus, K. Akiyama, J. Barrett, K. Bouman, R. Cappallo, A. Chael, M. Janssen, C. Lonsdale, S. Doeleman   +14 more
semanticscholar   +1 more source

GPCAL: A Generalized Calibration Pipeline for Instrumental Polarization in VLBI Data [PDF]

, 2020
We present the Generalized Polarization CALibration pipeline (GPCAL), an automated pipeline for instrumental polarization calibration of very long baseline interferometry (VLBI) data.
Jongho Park, D. Byun, K. Asada, Young-Zoo Yun   +3 more
semanticscholar   +1 more source

Geodetic VLBI Analysis at the National Geographic Institute of Spain

Proceedings, 2019
National Geographic Institute of Spain has a strong background concerning technical aspects of geodetic VLBI. As a step forward in this field, a VLBI analysis team has been set up and tests with different software packages have been carried out.
Víctor Puente, Esther Azcue, Susana Garcia-Espada, Yaiza Gómez-Espada   +3 more
doaj   +1 more source

Analysis on Impacts of KVN to Geodetic VLBI Network [PDF]

Journal of Astronomy and Space Sciences, 2006
KVN simulation, which is focused on evaluating the impacts of KVN to geodetic VLBI network, was performed. The KVN is under construction with three radio telescopes VLBI system for radio astronomy and space geodesy.
Jung-Ho Cho, Jong-Uk Park, Pil-Ho Park
doaj   +1 more source

Comparison of Gaia DR2 Parallaxes of Stars with VLBI Astrometry [PDF]

Astrophysical Journal, 2019
We compare the parallaxes of stars from VLBI astrometry in the literature to those in the Gaia DR2 catalog. Our full sample contains young stellar objects, evolved AGB stars, pulsars, and other radio stars.
S. Xu 徐, B. Zhang 张, M. Reid, X. Zheng 郑, G. Wang 王   +4 more
semanticscholar   +1 more source

Testing impact of the strategy of VLBI data analysis on the estimation of Earth Orientation Parameters and station coordinates

Reports on Geodesy and Geoinformatics, 2016
Very Long Baseline Interferometry (VLBI) is the only space geodetic technique capable to realise the Celestial Reference Frame and tie it with the Terrestrial Reference Frame.
Wielgosz Agata, Tercjak Monika, Brzeziński Aleksander   +2 more
doaj   +1 more source

The Past and Future of East Asia to Italy: Nearly Global VLBI

Galaxies, 2023
We present here the East Asia to Italy Nearly Global VLBI (EATING VLBI) project. How this project started and the evolution of the international collaboration between Korean, Japanese, and Italian researchers to study compact sources with VLBI ...
Gabriele Giovannini, Yuzhu Cui, Kazuhiro Hada, Kunwoo Yi, Hyunwook Ro, Bong Won Sohn, Mieko Takamura, Salvatore Buttaccio, Filippo D’Ammando, Marcello Giroletti, Yoshiaki Hagiwara, Motoki Kino, Evgeniya Kravchenko, Giuseppe Maccaferri, Alexey Melnikov, Kotaro Niinuma, Monica Orienti, Kiyoaki Wajima, Kazunori Akiyama, Akihiro Doi, Do-Young Byun, Tomoya Hirota, Mareki Honma, Taehyun Jung, Hideyuki Kobayashi, Shoko Koyama, Andrea Melis, Carlo Migoni, Yasuhiro Murata, Hiroshi Nagai, Satoko Sawada-Satoh, Matteo Stagni   +31 more
doaj   +1 more source

Geodetic VLBI for precise orbit determination of Earth satellites: a simulation study

Journal of Geodesy, 2020
Recent efforts of tracking low Earth orbit and medium Earth orbit (MEO) satellites using geodetic very long baseline interferometry (VLBI) raise questions on the potential of this novel observation concept for space geodesy.
Grzegorz Kłopotek, T. Hobiger, R. Haas, T. Otsubo   +3 more
semanticscholar   +1 more source

The Gaia reference frame for bright sources examined using VLBI observations of radio stars [PDF]

Astronomy & Astrophysics, 2019
Context. Positions and proper motions of Gaia sources are expressed in a reference frame that ideally should be non-rotating relative to distant extragalactic objects, coincident with the International Celestial Reference System (ICRS), and consistent ...
L. Lindegren
semanticscholar   +1 more source