Results 121 to 130 of about 9,059 (229)

The future of VLBI

, 2013
Appearing in the proceedings of the RTS 2012 conference (Resolving The Sky - Radio Interferometry: Past, Present and Future), April 17-20, 2012, Manchester (UK). Proceedings of Science, PoS(RTS2012)048.
openaire   +2 more sources

Tsukuba VLBI Correlator [PDF]

, 2013
The K5/VSSP software correlator (Figure 1), located in Tsukuba, Japan, is operated by the Geospatial Information Authority of Japan (GSI). It is fully dedicated to processing the geodetic VLBI sessions of the International VLBI Service for Geodesy and ...
Kurihara, Shinobu, Nozawa, Kentaro
core   +1 more source

Automated Modeling with AAP-Imfit: Astrometry and Photometry via CASA

The Astrophysical Journal
Very long baseline interferometry (VLBI) provides the highest-resolution radio intensity maps, crucial for detailed studies of compact sources like active galactic nuclei (AGNs) and their relativistic jets.
Alfredo Amador-Portes, Eva Palafox, Víctor M. Patiño-Álvarez, Vahram Chavushyan, Andrei P. Lobanov, Sergio A. Dzib   +5 more
doaj   +1 more source

A pilot very long baseline interferometry study of the SQUAB quasar sample featuring multiple Gaia detections

Astronomy & Astrophysics
Context. Our previous work identified a class of SDSS quasars with multiple Gaia detections, classifying them as candidates for various astrophysical systems, such as quasar–star pairs, dual quasars, and gravitationally lensed quasars.
Zhang Y., An T., Ji X., Zheng Z., Liu Y., Wu Q., Lin R., Liao S.   +7 more
doaj   +1 more source

Atmospheric VLBI: A method to validate long time series of water vapour content [Elektronisk resurs] [PDF]

, 2009
We assess the possibility to validatetime series of the atmospheric integratedwater vapour (IWV) from GPS observations usinggeodetic VLBI at the Onsala Space Observatoryin Sweden.
Nilsson, Tobias,, Haas, Rüdiger,, Elgered, Gunnar,   +2 more
core  

On the Integration of VLBI Observations to GENESIS into Global VGOS Operations

Remote Sensing
The upcoming European Space Agency (ESA) satellite mission GENESIS is an Earth-orbiting satellite carrying instruments of all four space geodetic techniques.
David Schunck, Lucia McCallum, Guifré Molera Calvés   +2 more
doaj   +1 more source

Observations of 6.7 GHz methanol masers with East-Asian VLBI Network. I. VLBI images of the first epoch of observations [PDF]

, 2014
Very-long-baseline interferometry (VLBI) monitoring of the 6.7 GHz methanol maser allows us to measure the internal proper motion of maser spots and therefore study the gas motion around high-mass young stellar objects.
Chen, Xi, Sawada-Satoh, Satoko, Mochizuki, Nanako, Motogi, Kazuhito, Kim, Kee-tae, Takaba, Hiroshi, Niinuma, Kotaro, Fujisawa, Kenta, Momose, Munetake, Matsumoto, Naoko, Hirano, Daiki, Shibata, Katsunori M., Omodaka, Toshihiro, Ogawa, Hideo, Hachisuka, Kazuya, Kawaguchi, Noriyuki, Murata, Yasuhiro, Shen, Zhiqiang, 藤澤, 健太, Xia, Bo, Doi, Akihiro, Sorai, Kazuo, Honma, Mareki, Li, Bin, Saito, Yu, Yonekura, Yoshinori, Kimura, Kimihiro, Sugiyama, Koichiro, Kobayashi, Hideyuki, Hirota, Tomoya   +29 more
core  

VLBI Astrometry

, 2003
Latex, 6 pages, 8 figures; Invited Review Talk at the ``ADeLA2002 - Astrometry in Latin America'' Conference, Araraquara - Sao Paulo, 2 - 5 September 2002, to be published in ADeLA Publications Series, Vol.
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Software Design for Kunming VLBI Station [PDF]

, 2007
经过大量研究与论证，利用VLBI测量技术完成我国绕月卫星的精密测角（测轨）是完全可行的。为达到预定目标，上海天文台负责对昆明VLBI观测站进行软硬件改造，连同上海、北京、乌鲁木齐站，组成我国自有的VLBI网，共同完成对绕月卫星的测轨、定位及数据接收任务。 S3数据采集系统是昆明VLBI观测站的重要组成部分，对其终端系统的自动化控制是正确、迅速地监控、记录、实时传送相关数据的保证，进而确保整个昆明站能顺利完成VLBI测轨分系统安排的任务。2005年之前，在DOS操作系统环境下编写的非标准软件控制终端 ...
王涛
core  

Estimation of Earth Rotation Parameters Based on BDS-3 and Discontinuous VLBI Observations

Remote Sensing
Earth rotation parameters (ERPs) are fundamental to geodetic and astronomical studies. With its high measurement accuracy and stability, the Very Long Baseline Interferometry (VLBI) plays an irreplaceable role in estimating the ERPs and maintaining the ...
Chenxiang Wang, Jizhang Sang, Xingxing Li, Pengfei Zhang   +3 more
doaj   +1 more source