Title: Mapping the Universe with Cosmic Voids
Abstract: Modern galaxy-redshift surveys are providing unprecedented resolution of low-density void regions. Cosmic voids, spanning 10s to 100s of Mpc in size, are among the largest objects in the universe, and their sparse environment makes them ideal for studying dark energy, modified gravity, neutrino properties, and Lambda-CDM predictions of galaxy astrophysics. With the advent of ongoing and upcoming surveys including DESI, Roman, and Euclid, void analyses are for the first time obtaining statistically significant void samples suitable for precision cosmology. I will discuss the construction of the first void catalogs for the Dark Energy Spectroscopic Instrument (DESI), including the comparison of various void-finding algorithms and the detection of voids in biased DESI tracers. These void catalogs will pave the way for future analytical and forward-modeled analyses that consider the size distribution and clustering of voids.
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