An information-theoretic analysis of the cosmic web using tidal tensor eigenvalues defines morphological entropy that identifies filaments as dominant information carriers and relates to the growth rate f(z).
The Network Behind the Cosmic Web
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abstract
The concept of the cosmic web, viewing the Universe as a set of discrete galaxies held together by gravity, is deeply engrained in cosmology. Yet, little is known about the most effective construction and the characteristics of the underlying network. Here we explore seven network construction algorithms that use various galaxy properties, from their location, to their size and relative velocity, to assign a network to galaxy distributions provided by both simulations and observations. We find that a model relying only on spatial proximity offers the best correlations between the physical characteristics of the connected galaxies. We show that the properties of the networks generated from simulations and observations are identical, unveiling a deep universality of the cosmic web.
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astro-ph.CO 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Information Content of the Cosmic Web
An information-theoretic analysis of the cosmic web using tidal tensor eigenvalues defines morphological entropy that identifies filaments as dominant information carriers and relates to the growth rate f(z).