Crawling the Cosmic Web: An Exploration of Filamentary Structure

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

By analyzing the smoothed density field and its derivatives on a variety of scales, we can select strands from the cosmic web in a way which is consistent with our common sense understanding of a "filament". We present results from a twoand three-dimensional filament finder, run on both CDM simulations and a section of the SDSS spectroscopic sample. In both data sets, we will analyze the length and width distribution of filamentary structure and discuss its relation to galaxy clusters. Sources of contamination and error, such as "fingers of god", will also be addressed.

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