Results 161 to 170 of about 22,374 (269)
AUA047: Students at TU Wien Organize Their own VLBI Session
, 2019 At Technische Universit¨at Wien (TU Wien) students had the chance to fully organize the official IVS session AUA047. We will give an overview of the individual parts of this course, including, scheduling, large-scale Monte Carlo simulations, an ...
Hankey, Warren +6 more
core
Opportunities with VLBI Transmitters on Satellites
Abstract Very Long Baseline Interferometry (VLBI) transmitters on satellites are considered for future satellites of Global Navigation Satellite Systems (GNSS) as well as for the upcoming Genesis mission of the European Space Agency (ESA).
Böhm, J., Wolf, H.
openaire +2 more sources
The Astrophysical JournalWe present high-sensitivity very long baseline interferometry (VLBI) observations of four ultraluminous X-ray sources (ULXs): Holmberg II X-1, IC 342 X-1, NGC 6946 X-1, and NGC 925 X-1.
Ailing Wang +9 more
doaj +1 more source
Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point. [PDF]
Sensors (Basel), 2022 Bae TS, Hong CK.
europepmc +1 more source
Lunar Observations and Geodetic VLBI – A Simulation Study [Elektronisk resurs]
, 2017 The recent OCEL (Observing the Chang’E Lander with VLBI) sessions allow the geodetic VLBI community to gain new experience concerning observations of an artificial lunar radio source.
Klopotek, Grzegorz, +2 more
core
GSFC VLBI Analysis Center [PDF]
, 2013 This report presents the activities of the GSFC VLBI Analysis Center during 2012. The GSFC VLBI Analysis Center analyzes all IVS sessions, makes regular IVS submissions of data and analysis products, and performs research and software development aimed ...
Ma, Chopo +6 more
core
HartRAO Site Tie Measurements: VLBI and Ground Survey
, 2019 A first short baseline VLBI experiment between the Hartebeesthoek Radio Astronomy Observatory´s (HartRAO) 26m legacy and co-located 15m radio telescopes has been conducted. The local automated site tie system at HartRAO is currently being implemented and
Krasna, Hana +8 more
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The Synergy between VLBI and Gaia astrometry
, 2018 With the publication of Gaia DR2, 1.3 billion stars now have public parallax and proper motion measurements. In this contribution, we compare the results for sources that have both optical and radio measurements, focusing on circumstellar masers.
van Langevelde, H. J., +12 more
core
Haystack Observatory VLBI Correlator [PDF]
, 2013 This report summarizes the activities of the Haystack Correlator during 2012. Highlights include finding a solution to the DiFX InfiniBand timeout problem and other DiFX software development, conducting a DBE comparison test following the First ...
Niell, Arthur +5 more
core
Improvement of orbit determination for geostationary satellites with VLBI tracking
, 2011 China's COMPASS satellite navigation system consists of five or more geostationary (GEO) satellites. The roles of GEO satellites are to improve the regional user's positioning accuracy and provide the continuous Radio Determination Satellite Service. The
Shi ShanBin +6 more
core +1 more source