Effects of baryonic feedback on the cosmic web

• DOI: 10.1103/physrevd.107.023514
• Publication Date: 2023-01-12T15:42:57Z
• Authors: James Sunseri; Zack Li; Jia Liu
• Keywords: Cosmology and Nongalactic Astrophysics (astro-ph.CO); 0103 physical sciences; FOS: Physical sciences; 01 natural sciences; Astrophysics - Cosmology and Nongalactic Astrophysics

We study the effect of baryons on cosmic web -- halos, filaments, walls, and voids. To do so, we apply a modified version NEXUS, morphological analysis algorithm, to IllustrisTNG simulations. find that halos lose more than $10\%$ their mass due baryons, mostly filaments small portion walls However, transfer does not significantly shift boundaries structures, leaving volume fractions structures largely unaffected. quantify effects baryonic feedback power spectrum probability density function (PDF) field for individual structures. For spectrum, most suppression can be accounted by including $M\ge10^{12}~M_\odot/h$ without considering other when examining PDF field, nearly $100\%$ emptiest regions $10\%$-level (boost or suppression) in remaining Our results indicate importance modeling whole web, just cosmological beyond two-point statistics field-based inferences.