Cosmic Structure SIG Seminar, 17 July 2026
Physics of the Cosmos - … - Physics of the Cosmos Community - Cosmic Structure SIG Seminar,… - About - Community - Program Analysis Group (PhysPAG) - Science Groups - Meetings - Cosmic Pathfinders - Science Gaps - Early Career Workshops - Opportunities - Missions - Studies - News & Events - Resources Cosmic Structure SIG Seminar Cosmic Structure Science Interest Group CoS SIG about Cosmic Structure SIG Seminar Location Virtual Dates 17 July 2026 10:00am PT / 1:00pm ET Community CoS SIG Type Seminar Constraints on Dynamical Dark Energy from the Full Dark Energy Survey Speaker Sujeong Lee, Ohio University Abstract The nature of dark energy remains one of the central open questions in cosmology, and recent analyses have reported a weak but intriguing preference for an evolving equation of state. I will present constraints on the w0-wa parameterization from the full six-year Dark Energy Survey (DES) dataset, combining growth and geometric probes — supernovae, BAO, and weak lensing and galaxy clustering (3x2pt) — within a single survey. The DES-only combination yields the tightest such constraints using multiple probes from any single survey, and adding external CMB and DESI BAO data gives a 3.0-sigma deviation from a cosmological constant, with the best-fit always favoring w0 > -1, wa Seminar Connection Join the Seminar News Straight to Your Inbox Subscribe to your community email news list We will never share your email address. Privacy Policy Sign Up The post Cosmic Structure SIG Seminar, 17 July 2026 appeared first on NASA Science .
Physics of the Cosmos - …
Constraints on Dynamical Dark Energy from the Full Dark Energy Survey
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