Work

Lost Baryons at Low Redshift

Year: 2007

Type: article

Abstract: We review our attempts to discover lost baryons at low redshift with the “X-ray forest” of absorption lines from the warm-hot intergalactic medium. We discuss the best evidence to date along the Mrk 421 sightline. We then discuss the missing baryons in the Local Group and the significance of the z = 0 absorption systems in X-ray spectra. We argue that the debate over the Galactic vs. extragalactic origin of the z = 0 systems is premature as these systems likely contain both components. Observations with next generation X-ray missions such as Constellation-X and XEUS will be crucial to map out the warm-hot intergalactic medium.

Source: Proceedings of the International Astronomical Union

DOI: 10.1017/s1743921307013816

Authors: Smita Mathur, Fabrizio Nicastro, Rik Willimas

Institutions: The Ohio State University, Astronomical Observatory of Rome, National Institute for Astrophysics, Leiden University

Language: English

Topic: Galaxies: Formation, Evolution, Phenomena

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W2011422921

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Cites: 15

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