2024
DOI: 10.3847/2041-8213/ad5ffe
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Cosmology from One Galaxy in a Void?

Bonny Y. 玥 Wang 汪,
Alice Pisani

Abstract: Understanding galaxy properties may be the key to unlocking some of the most intriguing mysteries of modern cosmology. Recent work relied on machine learning to extract cosmological constraints on Ωm using only one galaxy. But if this is true, how should we select the galaxy to use for cosmology inference? In this Letter, we consider selecting a galaxy that lies in cosmic voids, the underdense regions of the cosmic web, and compare the constraints obtained with the ones obtained when randomly selecting a galax… Show more

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