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The mass of the missing baryons in the X-ray forest of the warm–hot intergalactic medium

Author

Listed:
  • Fabrizio Nicastro

    (Harvard-Smithsonian Center for Astrophysics)

  • Smita Mathur

    (The Ohio State University)

  • Martin Elvis

    (Harvard-Smithsonian Center for Astrophysics)

  • Jeremy Drake

    (Harvard-Smithsonian Center for Astrophysics)

  • Taotao Fang

    (University of California-Berkeley)

  • Antonella Fruscione

    (Harvard-Smithsonian Center for Astrophysics)

  • Yair Krongold

    (Harvard-Smithsonian Center for Astrophysics
    Istituto de Astronomia, UNAM)

  • Herman Marshall

    (Massachusetts Institute of Technology)

  • Rik Williams

    (The Ohio State University)

  • Andreas Zezas

    (Harvard-Smithsonian Center for Astrophysics)

Abstract

On the trail of the missing baryons According to current cosmological models, baryons — elementary particles found in normal everyday matter — make up about 5% of the total mass density of the Universe. Observations at high redshifts support that prediction, but nearer home in space and time only half as many baryons have been detected. This has prompted a search for missing ‘normal’ (as opposed to ‘dark’) matter. Nicastro et al. report the discovery of a previously unknown source of baryons lying in a warm–hot phase of the intergalactic medium — and their mass is consistent with that of the ‘missing’ baryons

Suggested Citation

  • Fabrizio Nicastro & Smita Mathur & Martin Elvis & Jeremy Drake & Taotao Fang & Antonella Fruscione & Yair Krongold & Herman Marshall & Rik Williams & Andreas Zezas, 2005. "The mass of the missing baryons in the X-ray forest of the warm–hot intergalactic medium," Nature, Nature, vol. 433(7025), pages 495-498, February.
    • Handle: RePEc:nat:nature:v:433:y:2005:i:7025:d:10.1038_nature03245
    DOI: 10.1038/nature03245
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