Indonesian Students Club

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Dark Energy

Cosmology from DESI's First Year of Large-Scale Structure Measurements

Event Type
Seminar/Symposium
Sponsor
Department of Astronomy
Location
134 Astronomy Building
Virtual
wifi event
Date
Dec 3, 2024   3:45 - 4:45 pm  
Speaker
Professor Kyle Dawson
Contact
Daniel Franco
E-Mail
danielf9@illinois.edu
Phone
217-300-6769
Views
2
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.

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