An Excursion Set Model of the Cosmic Web: the Abundance of Sheets, Filaments And Halos Metadata

Metadata describes a digital item, providing (if known) such information as creator, publisher, contents, size, relationship to other resources, and more. Metadata may also contain "preservation" components that help us to maintain the integrity of digital files over time.

Available Formats

Dublin Core: XML Dublin Core: JSON Dublin Core: Text Dublin Core: RDF/XML UNTL: XML Access METS: XML

Title

  • Main Title An Excursion Set Model of the Cosmic Web: the Abundance of Sheets, Filaments And Halos

Creator

  • Author: Shen, Jiajian
    Creator Type: Personal
  • Author: Abel, Tom
    Creator Type: Personal
  • Author: Mo, Houjun
    Creator Type: Personal
  • Author: Sheth, Ravi
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Stanford Linear Accelerator Center
    Place of Publication: [Menlo Park, California]
    Additional Info: SLAC

Date

  • Creation: 2006-01-11

Language

  • English

Description

  • Content Description: We discuss an analytic approach for modeling structure formation in sheets, filaments and knots. This is accomplished by combining models of triaxial collapse with the excursion set approach: sheets are defined as objects which have collapsed along only one axis, filaments have collapsed along two axes, and halos are objects in which triaxial collapse is complete. In the simplest version of this approach, which we develop here, large scale structure shows a clear hierarchy of morphologies: the mass in large-scale sheets is partitioned up among lower mass filaments, which themselves are made-up of still lower mass halos. Our approach provides analytic estimates of the mass fraction in sheets, filaments and halos, and its evolution, for any background cosmological model and any initial fluctuation spectrum. In the currently popular {Lambda}CDM model, our analysis suggests that more than 99% of the mass in sheets, and 72% of the mass in filaments, is stored in objects more massive than 10{sup 10}M{sub {circle_dot}} at the present time. For halos, this number is only 46%. Our approach also provides analytic estimates of how halo abundances at any given time correlate with the morphology of the surrounding large-scale structure, and how halo evolution correlates with the morphology of large scale structure.
  • Physical Description: 20 pages

Subject

  • Keyword: Cosmological Models
  • Keyword: Abundance
  • Keyword: Simulation Astrophysics,Astro
  • STI Subject Categories: 71 Classical And Quantum Mechanics, General Physics
  • Keyword: Astrophysics,Astro
  • Keyword: Fluctuations
  • Keyword: Morphology

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: SLAC-PUB-11626
  • Grant Number: AC02-76SF00515
  • DOI: 10.2172/878007
  • Office of Scientific & Technical Information Report Number: 878007
  • Archival Resource Key: ark:/67531/metadc876395

Note

  • Display Note: http://www.slac.stanford.edu/cgi-wrap/pubpage?slac-pub-11626.html
Back to Top of Screen