Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-03-03
Astronomy and Astrophysics
Astrophysics
10 pages, 2 figures. Appeared as a solicited Perspective article in the January 4, 2008 special issue of Science on the cosmic
Scientific paper
10.1126/science.1151476
The universe is permeated by a network of filaments, sheets, and knots collectively forming a "cosmic web.'' The discovery of the cosmic web, especially through its signature of absorption of light from distant sources by neutral hydrogen in the intergalactic medium, exemplifies the interplay between theory and experiment that drives science, and is one of the great examples in which numerical simulations have played a key and decisive role. We recount the milestones in our understanding of cosmic structure, summarize its impact on astronomy, cosmology, and physics, and look ahead by outlining the challenges faced as we prepare to probe the cosmic web at new wavelengths.
Faucher-Giguere Claude-André
Hernquist Lars
Lidz Adam
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