Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Ming H. Xu"'
Autor:
Ming H. Xu, Tuomas Savolainen, James M. Anderson, Niko Kareinen, Nataliya Zubko, Susanne Lunz, Harald Schuh
Publikováno v:
Astronomy and Astrophysics
The VLBI Global Observing System, which is the next generation of geodetic VLBI and is called VGOS, observes simultaneously at four frequency bands in the range 3.0--10.7 GHz (expected to be extended to 14 GHz). Because source structure changes with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4632ad11d5ea7e1ea571567df6c102e1
https://depositonce.tu-berlin.de/handle/11303/17464
https://depositonce.tu-berlin.de/handle/11303/17464
Autor:
Guangli Wang, Christian Plötz, Susanne Lunz, Rüdiger Haas, Ming H. Xu, James M. Anderson, Tuomas Savolainen, S. Bernhart, Jamie McCallum, S. Bolotin, Robert Heinkelmann, Eskil Varenius, Nataliya Zubko, Niko Kareinen, Harald Schuh
We report the results of position ties for short baselines at eight geodetic sites based on phase delays that are extracted from global geodetic very-long-baseline interferometry (VLBI) observation...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c8670f259263d4fd61f192b7306d3cd
https://doi.org/10.1002/essoar.10507984.1
https://doi.org/10.1002/essoar.10507984.1
For understanding the diversity of jetted active galactic nuclei (AGN) and especially the puzzling wide range in their radio-loudness, it is important to understand what role the magnetic fields play in setting the power of relativistic jets in AGN.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47f22ca3c61207b5cc10ea1d3e700de1
https://aaltodoc.aalto.fi/handle/123456789/109184
https://aaltodoc.aalto.fi/handle/123456789/109184
Autor:
Harald Schuh, Tuomas Savolainen, Susanne Lunz, Nataliya Zubko, Markku Poutanen, Ming H. Xu, Guang L. Wang
Publikováno v:
Journal of Geophysical Research: Solid Earth
Funding Information: This research has made use of the Generic Mapping Tools package, the pgplot library, and the SAO/NASA Astrophysics Data System. This research has made use of data from the MOJAVE database that is maintained by the MOJAVE team (Li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4afcf2fda7a182673cc567f9958dd6b6
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006339_2/component/file_5006606/5006339.pdf
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006339_2/component/file_5006606/5006339.pdf
Publikováno v:
Astronomy and Astrophysics
We report the relationship between the $Gaia$--VLBI position differences and the magnitudes of source structure effects in VLBI observations. Because the $Gaia$--VLBI position differences are statistically significant for a considerable number of com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd417a44538b4d14926965b563c0a846
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006341
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006341
Autor:
O. Titov, Harald Schuh, Ming H. Xu, Robert Heinkelmann, Susanne Lunz, Megan Johnson, James M. Anderson
Publikováno v:
Abstracts
The new data release of the Gaia satellite operated by the European Space Agency recently published its 3rd data release (Early Data Release 3, EDR3). The dataset contains astrometric data of about 1.8 billion objects detected at optical frequencies
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a36623a16932329e8196f7626ef4895
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5008658
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5008658
Publikováno v:
Journal of Geodesy
The next-generation, broadband geodetic very long baseline interferometry system, named VGOS, is developing its global network, and VGOS networks with a small size of 3--7 stations have already made broadband observations from 2017 to 2019. We made q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54c1bee4031165d036fc52566bdd3add
Publikováno v:
The Astrophysical Journal
Geodetic/astrometric very long baseline interferometry (VLBI) has been routinely observing using various global networks for 40 yr, and it has produced more than 10 million baseline group delay, phase, and amplitude observables. These group delay obs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fad8be52cb6411eee72a101064d4ac4
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5000562_2/component/file_5000603/5000562.pdf
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5000562_2/component/file_5000603/5000562.pdf
Autor:
James M. Anderson, Ming H. Xu
Publikováno v:
Journal of Geophysical Research
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc8798790ac469f1ced239998bb8d6f6
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:3766916
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:3766916
Autor:
Julian A. Mora-Diaz, James M. Anderson, Harald Schuh, Guang L. Wang, Robert Heinkelmann, Ming H. Xu, Maria Karbon
Publikováno v:
Journal of Geodesy
Closure quantities measured by very long baseline interferometry (VLBI) observations are independent of instrumental and propagation instabilities and antenna gain factors, but are sensitive to source structure. A new method is proposed to calculate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4129be03592e39fe3884b97902c3068e
https://gfzpublic.gfz-potsdam.de/pubman/item/item_2338891
https://gfzpublic.gfz-potsdam.de/pubman/item/item_2338891