Impact of LRG1 and LRG2 in DESI 2024 BAO data on dark energy evolution

Understand

Recent measurements of baryon acoustic oscillations (BAO) by the Dark Energy Spectroscopic Instrument (DESI) suggest a preference for a dynamic dark energy model over a cosmological constant.

• This conclusion emerges from the combination of DESI's BAO data with observations of the Cosmic Microwave Background (CMB) and various type Ia supernova (SN Ia) catalogues.
• The deviation observed in the cosmological constant ($\Lambda$) reflects a departure from the standard cosmological model.
• Testing this deviation involves examining the consistency between cosmological parameters derived from early and late-time observations.