Refining the relativistic model for Gaia: Cosmological effects in the BCRS

Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/GutachtenBeitrag in KonferenzbandBeigetragenBegutachtung

Beitragende

Abstract

This paper represents a first attempt of embedding the Barycentric Celestial Reference System, the fundamental relativistic reference system to be used for the modelling of Gaia observations, into some cosmological background. The general Robertson-Walker metric is transformed into local coordinates where the cosmological effects are represented as tidal potentials. A version of a cosmological BCRS is then suggested to lowest order. The effects of cosmological background on the motion of the Solar System are estimated and found to be completely negligible. The relation to the de Sitter and Schwarzschild-de Sitter solutions is discussed.

Details

OriginalspracheEnglisch
TitelProceeding of Symposium “The Three-Dimensional Universe with Gaia”
Seiten305-308
Seitenumfang4
PublikationsstatusVeröffentlicht - 2005
Peer-Review-StatusJa

Publikationsreihe

ReiheEuropean Space Agency, (Special Publication) ESA SP
BandSP-576
ISSN0379-6566

Konferenz

TitelSymposium - The Three-Dimensional Universe with Gaia
Dauer4 - 7 Oktober 2004
StadtParis
LandFrankreich

Externe IDs

Scopus 23744496045
ORCID /0000-0003-4682-7831/work/170585853

Schlagworte

Schlagwörter

  • Cosmology, Gaia reference frame, Relativity