The Effect of Galactic Aberration on the CRF
International audience We compare two Celestial Reference Frame (CRF) solutions made from Very Long Baseline Interferometry (VLBI) group delay observations in S/X band using vector spherical harmonics. In both solutions the same data set was used which consists of almost all observations since 1979...
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ftunivnantes:oai:HAL:hal-03802968v1 2023-05-15T17:08:29+02:00 The Effect of Galactic Aberration on the CRF Mayer, D. Lambert, Sébastien Böhm, J. Krásná, H. Liu, N. Observatoire de Paris Université Paris sciences et lettres (PSL) Longyearbyen, Norway, Norway 2018-06-03 https://hal.archives-ouvertes.fr/hal-03802968 en eng HAL CCSD hal-03802968 https://hal.archives-ouvertes.fr/hal-03802968 BIBCODE: 2019ivs.conf.169M International VLBI Service for Geodesy and Astrometry 2018 General Meeting Proceedings: "Global Geodesy and the Role of VGOS - Fundamental to Sustainable Development https://hal.archives-ouvertes.fr/hal-03802968 International VLBI Service for Geodesy and Astrometry 2018 General Meeting Proceedings: "Global Geodesy and the Role of VGOS - Fundamental to Sustainable Development, Jun 2018, Longyearbyen, Norway, Norway. pp.169 [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] info:eu-repo/semantics/conferenceObject Conference papers 2018 ftunivnantes 2022-10-11T23:02:04Z International audience We compare two Celestial Reference Frame (CRF) solutions made from Very Long Baseline Interferometry (VLBI) group delay observations in S/X band using vector spherical harmonics. In both solutions the same data set was used which consists of almost all observations since 1979 until the beginning of 2018. The same parameterization and models were used with the exception that in one of the solutions the effect of galactic aberration (GA) was corrected. The other solution serves as a reference. We show that the deformation of a CRF estimated with the whole set of VLBI observations can be described by a systematic dipole displacement with an amplitude of about 35 ?as. Conference Object Longyearbyen Université de Nantes: HAL-UNIV-NANTES Longyearbyen Norway |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
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[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Mayer, D. Lambert, Sébastien Böhm, J. Krásná, H. Liu, N. The Effect of Galactic Aberration on the CRF |
topic_facet |
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
description |
International audience We compare two Celestial Reference Frame (CRF) solutions made from Very Long Baseline Interferometry (VLBI) group delay observations in S/X band using vector spherical harmonics. In both solutions the same data set was used which consists of almost all observations since 1979 until the beginning of 2018. The same parameterization and models were used with the exception that in one of the solutions the effect of galactic aberration (GA) was corrected. The other solution serves as a reference. We show that the deformation of a CRF estimated with the whole set of VLBI observations can be described by a systematic dipole displacement with an amplitude of about 35 ?as. |
author2 |
Observatoire de Paris Université Paris sciences et lettres (PSL) |
format |
Conference Object |
author |
Mayer, D. Lambert, Sébastien Böhm, J. Krásná, H. Liu, N. |
author_facet |
Mayer, D. Lambert, Sébastien Böhm, J. Krásná, H. Liu, N. |
author_sort |
Mayer, D. |
title |
The Effect of Galactic Aberration on the CRF |
title_short |
The Effect of Galactic Aberration on the CRF |
title_full |
The Effect of Galactic Aberration on the CRF |
title_fullStr |
The Effect of Galactic Aberration on the CRF |
title_full_unstemmed |
The Effect of Galactic Aberration on the CRF |
title_sort |
effect of galactic aberration on the crf |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.archives-ouvertes.fr/hal-03802968 |
op_coverage |
Longyearbyen, Norway, Norway |
geographic |
Longyearbyen Norway |
geographic_facet |
Longyearbyen Norway |
genre |
Longyearbyen |
genre_facet |
Longyearbyen |
op_source |
International VLBI Service for Geodesy and Astrometry 2018 General Meeting Proceedings: "Global Geodesy and the Role of VGOS - Fundamental to Sustainable Development https://hal.archives-ouvertes.fr/hal-03802968 International VLBI Service for Geodesy and Astrometry 2018 General Meeting Proceedings: "Global Geodesy and the Role of VGOS - Fundamental to Sustainable Development, Jun 2018, Longyearbyen, Norway, Norway. pp.169 |
op_relation |
hal-03802968 https://hal.archives-ouvertes.fr/hal-03802968 BIBCODE: 2019ivs.conf.169M |
_version_ |
1766064251462483968 |