DESI shakes up the dark Universe - an overview

ORAL  · Invited

Abstract

Dark Energy, which makes up 70% of the Universe and is responsible for its accelerated expansion, is the biggest mystery in cosmology. The Dark Energy Spectroscopic Instrument (DESI) is on its way to building the largest 3D map of the Universe to address this question. I will present the DESI survey, give an overview of the DESI first-year BAO results and discuss the intriguing varying dark-energy they hinted at. I will then provide a brief introduction of the new DESI results.

*This material is based upon work supported by the U.S. Department of Energy (DOE), Office of Science, Office of High-Energy Physics, under Contract No. DE–AC02–05CH11231, and by the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility under the same contract. Additional support for DESI was provided by the U.S. National Science Foundation (NSF), Division of Astronomical Sciences under Contract No. AST-0950945 to the NSF’s National Optical-Infrared Astronomy Research Laboratory; the Science and Technology Facilities Council of the United Kingdom; the Gordon and Betty Moore Foundation; the Heising-Simons Foundation; the French Alternative Energies and Atomic Energy Commission (CEA); the National Council of Humanities, Science and Technology of Mexico (CONAHCYT); the Ministry of Science, Innovation and Universities of Spain (MICIU/AEI/10.13039/501100011033), and by the DESI Member Institutions: ​https://www.desi.lbl.gov/collaborating-institutions. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the U. S. National Science Foundation, the U. S. Department of Energy, or any of the listed funding agencies.The authors are honored to be permitted to conduct scientific research on Iolkam Du’ag (Kitt Peak), a mountain with particular significance to the Tohono O’odham Nation.

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Publication: DESI 2024 II: sample definitions, characteristics, and two-point clustering statistics
DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars
DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman Alpha Forest
DESI 2024 V: Analysis of the full shape of two-point clustering statistics from galaxies and quasars
DESI 2024 VI: Cosmological Constraints from the measurements of Baryon Acoustic Oscillations
DESI 2024 VII: Cosmological constraints from full-shape analyses of the two-point clustering statistics measurements

Presenters

  • Nathalie Palanque-Delabrouille

    • Lawrence Berkeley National Laboratory

Authors

  • Nathalie Palanque-Delabrouille

    • Lawrence Berkeley National Laboratory