Origami: Delineating cosmic structures with phase-space folds

Mark C. Neyrinck, Bridget L. Falck, Alex S. Szalay

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Structures like galaxies and filaments of galaxies in the Universe come about from the origami-like folding of an initially flat three-dimensional manifold in 6D phase space. The origami method identifies these structures in a cosmological simulation, delineating the structures according to their outer folds. Structure identification is a crucial step in comparing cosmological simulations to observed maps of the Universe. The origami definition is objective, dynamical and geometric: filament, wall and void particles are classified according to the number of orthogonal axes along which dark-matter streams have crossed. Here, we briefly review these ideas, and speculate on how origami might be useful to find cosmic voids.

Original languageEnglish (US)
Title of host publicationOn Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories
EditorsRobert T. Jantzen, Kjell Rosquist, Remo Ruffini, Remo Ruffini
PublisherWorld Scientific
Pages2136-2138
Number of pages3
ISBN (Print)9789814612142
DOIs
StatePublished - 2015
Event13th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theories, MG13 2012 - Stockholm, Sweden
Duration: Jul 1 2015Jul 7 2015

Publication series

NameThe 13th Marcel Grossmann Meeting: On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proceedings of the MG13 Meeting on General Relativity, 2012
Volume0

Conference

Conference13th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theories, MG13 2012
Country/TerritorySweden
CityStockholm
Period7/1/157/7/15

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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