Euclid is a major mission of the European Space Agency (ESA) Cosmic Vision programme. This international reference mission in cosmology aims to understand the source of the accelerating expansion of the universe, the nature of dark energy and gravitation through the observation of several billion galaxies, tracing the history of the universe over more than 10 billion years.

The scale of this mission requires an organisation - the Euclid Consortium - that brings together around 1,500 researchers, engineers and technicians from all European countries, with participation from the USA, Canada and Japan. As a major participant in this project, France, via CNES, has provided the laboratories with the means to contribute to this mission. With about 250 active Euclid members in France - including the mission's scientific leader (Yannick Mellier, IAP) and his deputy (Francis Bernardeau, IAP) - CNES, CNRS, CEA and the partner universities are providing significant human resources and technical infrastructure.

The Institut d'Astrophysique de Paris (IAP) is one of the founding members of the Euclid Consortium and has been involved in the mission since the beginning of the project on various aspects and at different organisational levels. In particular, it welcomes Yannick Mellier, Euclid Consortium Leader (ECL). With a long experience of space missions, advanced data analysis, weak lensing, galaxy clusters and cosmology, IAP is involved in the galaxy clustering and weak lensing scientific working groups and brings a particular expertise in the extraction of cosmological parameters from survey data, building on the key role played in the Planck mission. IAP also leads the organisational unit dedicated to data processing (OU-VIS) of the VIS wide field camera and is deputy-lead in the simulation group (OU-SIM). In addition, the IAP contributes strongly to the legacy science activities exploiting the singularity of the Euclid data.

The launch date of Euclid is fast approaching. The objective of this meeting is to take stock of Euclid activities in France, to identify areas that need to be strengthened and to plan the scientific exploitation of the first available data.

• Slide available
  
  
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  until nov. 16th, 2022
  
  
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  until nov. 16th, 2022