2000/05/23 by Francesco Miniati, Miniati, Francesco, Dongsu Ryu +5
Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Cosmic Phenomena #Cosmology and Gravitation Theories #FOS: Physical sciences #Solar and Space Plasma Dynamics #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0005445
4 pages, 1 figure. Contributed talk, to appear in Cosmic Evolution and Galaxy Formation: Structure, Interactions, and Feedback, ASP Conference Series, eds. J. Franco, E. Terlevich, O. Lopez-Cruz, I. Aretxaga
arxiv created 2000/05/23 · openalex publication_date 2000/05/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate the dynamical importance of a newly recognized possible source of significant feedback generated during structure formation; namely cosmic ray (CR) pressure. We present evidence for the existence of numerous shocks in the hot gas of galaxy clusters (GCs). We employ for the first time an explicit numerical treatment of CR acceleration and transport in hydro simulations of structure formation. According to our results, CRs provide an important fraction of the total pressure inside GCs, up to several tenths. This was true even at high redshift (z=2), meaning that such non-thermal component could affect the evolution of structure formation.