Cosmology from DESI's First Year of Large-Scale Structure Measurements
- Event Type
- Seminar/Symposium
- Sponsor
- Department of Astronomy
- Location
- 134 Astronomy Building
- Virtual
- Join online
- Date
- Mar 4, 2025 3:45 - 4:45 pm
- Speaker
- Professor Kyle Dawson
- Contact
- Daniel Franco
- danielf9@illinois.edu
- Phone
- 217-300-6769
- Views
- 245
- Originating Calendar
- Astronomy Colloquium Speaker Calendar
Over a five-year period, the Dark Energy Spectroscopic Instrument (DESI) will spectroscopically classify nearly 40 million galaxies and quasars over 1/3 of the sky and to redshifts z < 3.5. The DESI collaboration has completed measurements of the baryon acoustic oscillation (BAO) feature and more generally, of large-scale structure, using data from the first year of observation. In this talk, I will present those measurements and their implications for our understanding of the cosmological model. In particular, I will discuss the constraints on the Hubble Constant, dark energy equation of state, and summed mass of the three neutrino mass eigenstates. In doing so, I will discuss the new and future DESI measurements with respect to the hints of tension that have been reported in the Hubble Constant and with LCDM in general.