Euclid on Sky

I haven’t posted much recently about the European Space Agency’s Euclid Mission but I’ve got an excuse to remedy that today as I’ve just seen that the Special Issue of Astronomy & Astrophysics called Euclid on Sky has at last been published (with a date of 30th April 2025). This contains the main mission and instrument overview papers as well as scientific papers relating to the Early Release Observations. All the individual papers have been on arXiv for some time already.

You can access the Special Issue here.

The main mission overview paper has 1139 authors (including yours truly); that’s definitely the longest author list I’ve ever been on! The arXiv version has been available for almost a year and has already got 254 citations. Here is the 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 deg^2 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.

Here’s Figure 1.

#AstronomyAstrophysics #EarlyReleaseObservations #Euclid #EuclidEarlyReleaseObservations

@linuxgal
Euclid and "Oyler" need to get together and standardise their desired pronunciation, or we shall keep having this problem.

#math #maths #mathematics #english #greek #linguistics #language #names #euler #euclid

Gestern war ich live bei Astro & Co mit einem Update zu #ESA #Euclid. Wir hatten gerade unseren ersten "Q1" Datenrelease von 63 Quadratgrad. Ich erkläre was dahinter steckt, welche Projekte schon gemacht wurde und wie man an die Daten kommt.

@hausderastronomie @ec_euclid

https://astrodon.social/@hausderastronomie/114292496344970435

#astronomie #wissenschaft #weltraum

ESA’s Euclid space telescope has made an extraordinary find – a perfect Einstein ring! This rare gravitational lensing event bends light from a galaxy 4.4 billion light-years behind it, producing an almost flawless ring thanks to a near-perfect alignment.

https://www.star.uliege.be/cms/c_13455437/en/euclid-lifts-the-veil-on-the-invisible-universe-a-first-harvest-of-gravitational-mirages

#space #euclid #esa

What Caused the #IceAges? : Medium

The First #BigData Drop From the #Euclid #Space #Telescope Unlocks a ‘#TreasureTrove’ of #Insights on the #Universe’s #Mysteries : Misc

Is #DarkEnergy Getting Weaker? New #Evidence Strengthens the Case. : Quanta Mag

Check our latest #KnowledgeLinks

https://knowledgezone.co.in/resources/bookmarks

Espace, Euclid, matière noire/énergie noire :
La mission Euclid de l'ESA révèle 26 millions de galaxies
Lire l'article ici :
https://www.nationalgeographic.fr/espace/astrophysique-univers-cosmos-la-mission-euclid-de-esa-revele-26-millions-de-galaxies
Lire un autre article ici :
https://www.insu.cnrs.fr/fr/cnrsinfo/quick-release-1-le-telescope-spatial-euclid-devoile-sa-premiere-moisson-dimages-de
Lire un autre article ici :
https://cnes.fr/actualites/images-euclid-devoile-trois-mosaiques-couvrant-une-vaste-zone-ciel

#espace #sciences #euclid