English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The metric recommanded by the IAU2000 resolutions allows propagation of lightcalculations at the c-3 level in the general relativity framework. In a recentpaper [1], motivated by forthcoming space experiments involving propagation oflight in the Solar System (ASTROD, GAIA, LATOR, ODYSSEY, SAGAS, SIM, TIPO,...), we have proposed an extention of the IAU metric equations at the c-4level. This has been made in the general relativity framework. However,scalar-tensor theories may induce corrections numerically comparable to the c-4general relativistic terms. Accordingly, one proposes in this paper anextension of [1] to the scalar-tensor case. The case of a strongly hierarchizedsystem (such as the Solar system) is emphasized. In this case, an explicitmetric solution is proposed.

Explicit form of the Scalar-Tensor metric to be used for propagation of light in the Solar system in continuity of the GR IAU2000 metric