Warm–hot baryons comprise 5–10 per cent of filaments in the cosmic web

Dominique Eckert (), Mathilde Jauzac, HuanYuan Shan, Jean-Paul Kneib, Thomas Erben, Holger Israel, Eric Jullo, Matthias Klein, Richard Massey, Johan Richard and Céline Tchernin
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Dominique Eckert: University of Geneva, Chemin d’Ecogia 16
Mathilde Jauzac: Institute for Computational Cosmology, Durham University
HuanYuan Shan: Laboratoire d’Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny
Jean-Paul Kneib: Laboratoire d’Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny
Thomas Erben: Argelander-Institut für Astronomie, Auf dem Hügel 71
Holger Israel: Institute for Computational Cosmology, Durham University
Eric Jullo: Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326
Matthias Klein: Argelander-Institut für Astronomie, Auf dem Hügel 71
Richard Massey: Institute for Computational Cosmology, Durham University
Johan Richard: CRAL, Observatoire de Lyon, Université Lyon 1
Céline Tchernin: University of Geneva, Chemin d’Ecogia 16

Nature, 2015, vol. 528, issue 7580, 105-107

Abstract: In the local Universe, the census of all observed baryons falls short of the estimated number by a factor of two, and simulations have indicated that the missing baryons reside throughout the filaments of the cosmic web; X-ray observations of filamentary structures associated with the galaxy cluster Abell 2744 now find that 5 to 10 per cent of the filament mass is in the form of baryonic gas.

Date: 2015
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DOI: 10.1038/nature16058

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