Euclid I. Overview of the Euclid mission

Mellier, Y orcid iconORCID: 0000-0001-6676-3842, Abdurro’uf orcid iconORCID: 0000-0002-5258-8761, Acevedo Barroso, JA orcid iconORCID: 0000-0002-9654-1711, Achúcarro, A, Adamek, J orcid iconORCID: 0000-0002-0723-6740, Adam, R orcid iconORCID: 0009-0000-5380-1109, Addison, GE orcid iconORCID: 0000-0002-2147-2248, Aghanim, N orcid iconORCID: 0000-0002-6688-8992, Aguena, M, Ajani, V orcid iconORCID: 0000-0001-9442-2527, Akrami, Y orcid iconORCID: 0000-0002-2407-7956, Al-Bahlawan, A, Alavi, A orcid iconORCID: 0000-0002-8630-6435, Albuquerque, IS orcid iconORCID: 0000-0002-5369-1226, Alestas, G orcid iconORCID: 0000-0003-1790-4914, Alguero, G, Allaoui, A, Allen, SW orcid iconORCID: 0000-0003-0667-5941, Allevato, V orcid iconORCID: 0000-0001-7232-5152, Alonso-Tetilla, AV orcid iconORCID: 0000-0002-6916-9133 et al (2025) Euclid I. Overview of the Euclid mission. Astronomy & Astrophysics, 697. ISSN 0004-6361

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Abstract

The current standard model of cosmology successfully describes a variety of measurements, but the nature of its main ingredients, dark matter and dark energy, remains unknown. Euclid is a medium-class mission in the Cosmic Vision 2015–2025 programme of the European Space Agency (ESA) that will provide high-resolution optical imaging, as well as near-infrared imaging and spectroscopy, over about 14 000 deg2 of extragalactic sky. In addition to accurate weak lensing and clustering measurements that probe structure formation over half of the age of the Universe, its primary probes for cosmology, these exquisite data will enable a wide range of science. This paper provides a high-level overview of the mission, summarising the survey characteristics, the various data-processing steps, and data products. We also highlight the main science objectives and expected performance.

Item Type: Article
Uncontrolled Keywords: 5107 Particle and High Energy Physics; 51 Physical Sciences; Bioengineering; 0201 Astronomical and Space Sciences; Astronomy & Astrophysics; 5101 Astronomical sciences; 5107 Particle and high energy physics; 5109 Space sciences
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: EDP Sciences
Date of acceptance: 28 August 2024
Date of first compliant Open Access: 2 June 2025
Date Deposited: 02 Jun 2025 11:22
Last Modified: 03 Jul 2025 13:15
DOI or ID number: 10.1051/0004-6361/202450810
URI: https://researchonline.ljmu.ac.uk/id/eprint/26475
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