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

Michael H. Soffel; Sergei A. Klioner

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

Sergei A. Klioner, Michael H. Soffel

Astrophysics · Submitted 12 Nov 2004

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The effects of cosmological background on the motion of the solar system are estimated and found to be completely negligible.

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arXiv IDastro-ph/0411363 (version 2)

Pith IDT2WFGZHX, Pith's permanent record of this paper and its review

CitationMichael H. Soffel, Sergei A. Klioner. "Refining the relativistic model for Gaia: cosmological effects in the BCRS." arXiv:astro-ph/0411363 (2004). https://pith.science/paper/T2WFGZHX

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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,190 input tokens.

What the abstract itself states, as probabilities: claims first 0.79 · states limitation 0.65 · human participants 0.01 · controlled comparison 0.03 · randomized assignment 0.01 · states quantitative result 0.10 · compares with prior results 0.22 · mentions code or data availability 0.02.

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arXiv listing abstract v2. Results and the main claim are underlined; show every role.

This paper represents a first attempt of embedding the Barycentric Celestial Reference System, the fundamental relativistic reference system to be used for the modeling 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.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	This paper represents a first attempt of embedding the Barycentric Celestial Reference System, the fundamental relativistic reference system to be used for the modeling of Gaia observations, into some cosmological background.	contribution 0.93	0.86	0.05	asserted 0.95
s1	The general Robertson-Walker metric is transformed into local coordinates where the cosmological effects are represented as tidal potentials.	method 0.98	0.84	0.04	asserted 1.00
s2	A version of a cosmological BCRS is then suggested to lowest order.	contribution 0.90	0.87	0.08	hedged possibility 0.97
s3	The effects of cosmological background on the motion of the solar system are estimated and found to be completely negligible.	result 1.00	0.93	0.52	asserted 1.00
s4	The relation to the de Sitter and Schwarzschild-de Sitter solutions is discussed.	contribution 0.57	0.71	0.04	asserted 0.65

What kind of paper the classifier reports this is: theoretical result 0.99 · evidence from proof or derivation 1.00.

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arXiv listing abstract v2

not examined

full text
figures and tables
references and citing sentences
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P abstract

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T body sentences
C citations
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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

This paper represents a first attempt of embedding the Barycentric Celestial Reference System, the fundamental relativistic reference system to be used for the modeling 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.

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3 arXiv papers cite this in 3 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it

Cites it as background 3 papers

The solution depends upon the model of the universe [ref] .

Time dependent embedding of spherically symmetric Rindler-like spacetime · Introduction · 0.93
Modifications of the IAU system for accommodating cosmological effects have been proposed in [ref] , by taking the cosmological expansion as a (tidal) perturbation around the PN metric [ref] [ref] , or by considering perturbations around the flat ($k=1$) subcase of the FLRW solution [ref] .

Reference frames in General Relativity and the galactic rotation curves · PN approximation: the IAU reference systems · 0.84
The apparently simple question whether the cosmological expansion takes place even locally (at the level of an atom or of the Solar System) is a very complicate one and is still an unsolved problem [ref] .

Conformal time dependent Painleve-Gullstrand spacetime · Introduction · 0.90

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