Geodetic VLBI for precise orbit determination of Earth satellites: a simulation study
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Geodesy"
DOI: 10.1007/s00190-020-01381-9
Abstract: 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. Therefore, we… read more here.
Keywords: study; vlbi; meo satellites; geodetic vlbi ... See more keywords
RadioAstron orbit determination and evaluation of its results using correlation of space-VLBI observations
Sign Up to like & getrecommendations! Published in 2018 at "Advances in Space Research"
DOI: 10.1016/j.asr.2019.05.007
Abstract: Abstract A crucial part of a space mission for very-long baseline interferometery (VLBI), which is the technique capable of providing the highest resolution images in astronomy, is orbit determination of the mission’s space radio telescope(s).… read more here.
Keywords: space; vlbi observations; vlbi; space vlbi ... See more keywords
Considerations of VLBI transmitters on Galileo satellites
Sign Up to like & getrecommendations! Published in 2021 at "Advances in Space Research"
DOI: 10.1016/j.asr.2021.04.048
Abstract: Abstract For directly linking the dynamical reference frame of satellite orbits to the quasi-inertial reference frame of extra-galactic radio sources, observations of satellites with the Very Long Baseline Interferometry (VLBI) technique are the only conceivable… read more here.
Keywords: vlbi; satellite; vlbi observations; vlbi transmitters ... See more keywords
East Asia VLBI Network observations of the TeV Gamma-Ray Burst 190114C
Sign Up to like & getrecommendations! Published in 2020 at "Science Bulletin"
DOI: 10.1016/j.scib.2019.11.012
Abstract: Observations of gamma-ray bursts (GRBs) at Very High Energy (VHE) offer a unique opportunity to investigate particle acceleration processes, magnetic fields and radiation fields in these events. Very Long Baseline Interferometry (VLBI) observations have been… read more here.
Keywords: east asia; vlbi network; gamma ray; vlbi ... See more keywords
The Role of Spatial Gradient on Vertical Total Electron Content Extraction From Geodetic Very Long Baseline Interferometry Observation: Case Study CONT08 to CONT17‐L1
Sign Up to like & getrecommendations! Published in 2021 at "Space Weather"
DOI: 10.1029/2020sw002633
Abstract: 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 electron… read more here.
Keywords: vlbi; long baseline; role; geodetic long ... See more keywords
Nutation terms adjustment to VLBI and implication for the Earth rotation resonance parameters
Sign Up to like & getrecommendations! Published in 2019 at "Geophysical Journal International"
DOI: 10.1093/gji/ggz468
Abstract: The nutation harmonic terms are commonly determined from celestial pole offset series produced from very long baseline interferometry (VLBI) time delay analysis. This approach is called an indirect approach. As VLBI observations are treated independently… read more here.
Keywords: resonance parameters; vlbi; nutation terms; nutation ... See more keywords
VLBI Astrometry of radio stars to link radio and optical celestial reference frames. I. HD 199178 & AR Lacertae
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1214
Abstract: To accurately link the radio and optical Celestial Reference Frames (CRFs) at optical bright end, i.e., with Gaia G band magnitude $\lesssim $13, increasing number and improving sky distribution of radio stars with accurate astrometric… read more here.
Keywords: radio stars; vlbi; radio optical; link radio ... See more keywords
VLBI observations of the G25.65+1.05 water maser superburst
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz3172
Abstract: This paper reports observations of a 22 GHz water maser ‘superburst’ in the G25.65+1.05 massive star-forming region, conducted in response to an alert from the Maser Monitoring Organisation (M2O). Very long baseline interferometry (VLBI) observations using… read more here.
Keywords: maser; maser superburst; water maser; vlbi ... See more keywords
On significance of VLBI/Gaia position offsets
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnrasl/slx001
Abstract: We have cross matched the Gaia Data Release 1 secondary dataset that contains positions of 1.14 billion objects against the most complete to date catalogue of VLBI positions of 11.4 thousand sources, almost exclusively active… read more here.
Keywords: vlbi; significance vlbi; vlbi gaia; position offsets ... See more keywords
High-Resolution Radio Observations of Five Optically Selected Type 2 Quasars
Sign Up to like & getrecommendations! Published in 2020 at "Symmetry"
DOI: 10.3390/sym12040527
Abstract: Many low-luminosity active galactic nuclei (AGNs) contain a compact radio core which can be observed with high angular resolution using very long baseline interferometry (VLBI). Combining arcsec-scale structural information with milliarcsec-resolution VLBI imaging is a… read more here.
Keywords: resolution; radio; type quasars; optically selected ... See more keywords