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Towards a Direct Detection of Warm Gas in Galactic Haloes at Cosmological Distances

Milan M. Cirkovic·J. Bland-Hawthorn·Srdjan Samurovic
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Abstract

Recent highly sensitive detections of line emission from extended gas in the local universe demonstrate the feasibility of detecting H$α$ emitting galactic halos out to $z\sim1$. We determine the form of the surface brightness vs. redshift dependence which takes into account UV background evolution. Successful detections will have a major impact on a wide range of fields, in particular, the source of ionization in QSO absorption systems.

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Milan M. Cirkovic, J. Bland-Hawthorn, Srdjan Samurovic. 1999-03-22. Towards a Direct Detection of Warm Gas in Galactic Haloes at Cosmological Distances. https://doi.org/10.1046/j.1365-8711.1999.02645.x

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