An estimate of the electron density in filaments of galaxies at z ~ 0.1

Amelia Kate Fraser-McKelvie, Kevin Pimbblet, Jasmina Lazendic-Galloway

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    Abstract

    Most of the baryons in the Universe are thought to be contained within filaments of galaxies, but as yet, no single study has published the observed properties of a large sample of known filaments to determine typical physical characteristics such as temperature and electron density. This paper presents a comprehensive large-scale search conducted for X-ray emission from a population of 41 bona fide filaments of galaxies to determine their X-ray flux and electron density. The sample is generated from the filament catalogue of Pimbblet et al., which is in turn sourced from the two-degree Field Galaxy Redshift Survey (2dFGRS).
    Original languageEnglish
    Pages (from-to)1961 - 1966
    Number of pages6
    JournalMonthly Notices of the Royal Astronomical Society
    Volume415
    Issue number2
    DOIs
    Publication statusPublished - 2011

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