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 highly-accurate optical reference frame GCRF (Gaia Celestial ReferenceFrame) is expected to be available in several years. By the same time, a newversion of radio reference frame ICRF (International Celestial Reference Frame)will be also published. The link of GCRF to ICRF will be defined by means ofcomputation of the orientation angles between the two frames using the commonextragalactic objects observed in both radio (VLBI) and optics (Gaia). Takinginto account the expected accuracy of ICRF and GCRF of the first tensmicroarcseconds, the link between them should be defined at a microarcsecondlevel, which requires using the most accurate algorithms and models. One ofsuch models is the Galactic aberration in proper motions, which is not includedin the data processing yet. In this paper its impact on the ICRF-Gaia link isestimated. Preliminary results showed that this impact is at a level of about 1microarcsecond.

How much can Galactic aberration impact the link between radio (ICRF) and optical (GCRF) reference frames