Results 11 to 20 of about 9,059 (229)
HINOTORI and Its Perspectives in the Black-Hole Jet Study
Galaxies, 2023 Simultaneous multi-band very long baseline interferometry (VLBI) observations at millimeter wavelengths have huge potential for various science cases.
Toshihisa Tsutsumi +12 more
doaj +1 more source
High-fidelity wideband VLBI polarimetry [PDF]
, 2023 We will discuss about wideband and multiband VLBI observations taken with linear-polarization feeds (the simplest hardware polarimetry for wide bands), and how these observations can be calibrated and fringe-fitted with special software, in order to ...
Martí-Vidal, Iván
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Space Weather, 2021 Geodetic very long baseline interferometry (VLBI) observations are carried out, with the legacy system, using two well‐separated frequency bands in order to determine first‐order ionospheric delay corrections corresponding to the combined effect of total
Hossein Etemadfard +3 more
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VLBI architecture of a compact binary with exoplanet [PDF]
, 2023 Very Long Baseline Interferometry (VLBI) offers astrometric precision of tens of micro-arseconds, which is comparable to that offered by the Gaia mission.
Ortiz-Leon, Gisela
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Global Geodetic Observing System 2015–2018 [PDF]
Geodesy and Cartography, 2019 Global Geodetic Observing System (GGOS) was established in 2003 by the International Association of Geodesy (IAG) with the main goal to deepen understanding of the dynamic Earth system by quantifying human-induced Earth’s changes in space and time.
Krzysztof Sośnica, Jarosław Bosy
doaj +1 more source
Galaxies, 2022 The East Asian VLBI Network (EAVN) is an international VLBI facility in East Asia and is operated under mutual collaboration between East Asian countries, as well as part of Southeast Asian and European countries.
Kazunori Akiyama +104 more
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The 40-yr History of 3C84 and Future Prospects with VLBI and ALMA [PDF]
, 2023 3C 84 is the bright, nearby radio source that is associated with a giant elliptical galaxy NGC 1275 (z=0.0176). Thanks to its proximity and brightness, 3C 84 has been studied using VLBI extensively in the context of jet formation, mechanism of high ...
Nagai, Hiroshi
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Precise VLBI/GNSS ties with micro-VLBI
, 2023 We present here a concept of measuring local ties between collocated GNSS and VLBI stations using the microwave technique that effectively transforms a GNSS receiver to an element of a VLBI network. This is achieved by modifying the signal chain that allows to transfer voltage of the GNSS antenna to a digitizer via a coaxial cable.
Petrov, Leonid +5 more
openaire +2 more sources
Ray tracing-based delay model for compensating gravitational deformations of VLBI radio telescopes
Journal of Geodetic Science, 2022 The precision and the reliability of very long baseline interferometry (VLBI) depend on several factors. Apart from fabrication discrepancies or meteorological effects, gravity-induced deformations of the receiving unit of VLBI radio telescopes are ...
Lösler Michael +6 more
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Extragalactic maser VLBI studies: past, present and future [PDF]
, 2023 Since three decades, VLBI studies of extragalactic (water) maser sources have incontrovertibly proved that they are unique tools to derive fundamental physical quantities of the host galaxies.
Tarchi, Andrea
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