The mysterious absence of neutral hydrogen within 1 Mpc of a luminous quasar at redshift 2.168

Francis, Paul; Bland-Hawthorn, Joss

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The mysterious absence of neutral hydrogen within 1 Mpc of a luminous quasar at redshift 2.168

Date

2004

Authors

Francis, Paul

Bland-Hawthorn, Joss

Publisher

Blackwell Publishing Ltd

Abstract

The intense ultraviolet (UV) radiation from a highly luminous quasi-stellar object (QSO) should excite fluorescent Lyman α (Lyα) emission from any nearby neutral hydrogen clouds. We present a very deep narrow-band search for such emission near the z = 2