First Major Cosmological Results from the Dark Energy Spectroscopic Instrument
by
DrJohannes Lange(U. Mich.)
→
Pacific/Honolulu
Description
The Dark Energy Spectroscopic Instrument (DESI) is a next-generation cosmological survey measuring the spectra of tens of millions of extragalactic galaxies and quasars. Its unprecedented capabilities allow us to create the most detailed three-dimensional maps of the Universe produced to date. Recently, DESI released its first major cosmological analysis, focusing on the measurement of Baryon Acoustic Oscillations (BAO), a so-called cosmological standard ruler. By measuring the size of the BAO scale over cosmic time, DESI can put new constraints on the expansion history of the Universe. This, in turn, gives new insights into the properties of dark energy, spatial curvature, and the sum of the neutrino masses. In this talk, I will give an overview of the recent results, how to interpret them, and discuss what to expect from DESI in the future.
