Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Very long baseline interferometry (VLBI)"'
Autor:
Saho Matsumoto, Haruka Ueshiba, Tomokazu Nakakuki, Yu Takagi, Kyonosuke Hayashi, Toru Yutsudo, Katsuhiro Mori, Yudai Sato, Tomokazu Kobayashi
Publikováno v:
Earth, Planets and Space, Vol 74, Iss 1, Pp 1-14 (2022)
Abstract The local-tie vectors, which connect coordinate frames of different space geodetic techniques, are indispensable for the construction of the International Terrestrial Reference Frame (ITRF). To obtain the local-tie vector connecting very lon
Externí odkaz:
https://doaj.org/article/6812f3a37a4f463d924382e5c67828a8
Autor:
Sigrid Böhm, Johannes Böhm, Jakob Gruber, Lisa Kern, Jamie McCallum, Lucia McCallum, Tiege McCarthy, Jonathan Quick, Matthias Schartner
Publikováno v:
Earth, Planets and Space, Vol 74, Iss 1, Pp 1-16 (2022)
Abstract The deviation of Universal Time from atomic time, expressed as UT1−UTC, reflects the irregularities of the Earth rotation speed and is key to precise geodetic applications which depend on the transformation between celestial and terrestria
Externí odkaz:
https://doaj.org/article/d24cc070dbf646439af31c6d6b653f49
Publikováno v:
Earth, Planets and Space, Vol 72, Iss 1, Pp 1-14 (2020)
Abstract To support monitoring subtle effects in the Earth system such as a mean sea level rise of 3 mm/year, a next-generation VLBI system, the VLBI Global Observing System (VGOS), has been developed and a new VGOS station network is being built. Ho
Externí odkaz:
https://doaj.org/article/48fa3b70dce44abeb0ef0952d806b9c5
Autor:
Hyunwook Ro, Kunwoo Yi, Yuzhu Cui, Motoki Kino, Kazuhiro Hada, Tomohisa Kawashima, Yosuke Mizuno, Bong Won Sohn, Fumie Tazaki
Publikováno v:
Galaxies, Vol 11, Iss 1, p 33 (2023)
Recent VLBI monitoring has found transverse motions of the M87 jet. However, due to the limited cadence of previous observations, details of the transverse motion have not been fully revealed yet. We have regularly monitored the M87 jet at KVN and VE
Externí odkaz:
https://doaj.org/article/fd4a755edcc24439b637252ae5b58088
Akademický článek
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Autor:
Rocco Lico, Svetlana G. Jorstad, Alan P. Marscher, Jose L. Gómez, Ioannis Liodakis, Rohan Dahale, Antxon Alberdi, Roman Gold, Efthalia Traianou, Teresa Toscano, Marianna Foschi
Publikováno v:
Galaxies, Vol 11, Iss 1, p 17 (2023)
The next-generation Event Horizon Telescope (ngEHT) will provide us with the best opportunity to investigate supermassive black holes (SMBHs) at the highest possible resolution and sensitivity. With respect to the existing Event Horizon Telescope (EH
Externí odkaz:
https://doaj.org/article/544b286f24d64d719d9cc5e2875d4d79
Akademický článek
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Akademický článek
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Publikováno v:
Geodesy and Geodynamics, Vol 7, Iss 6, Pp 406-415 (2016)
The precise orbit determination of Chang'E-2 is the most important issue for successful mission and scientific applications, while the lunar gravity field model with big uncertainties has large effect on Chang'E-2 orbit determination. Recently, sever
Externí odkaz:
https://doaj.org/article/9f9e639e780543c2a26aec536cbfd6b5
Quasars are nowadays the basis to determine the world’s absolute orientation in space by radio interferometry (VLBI). The global network of baselines measured by the used radio telescopes, which vary greatly in size, is subject to various influence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::140e5a1a8fdbd5c4bf82845024741fba
https://hdl.handle.net/10251/192354
https://hdl.handle.net/10251/192354
