Lyman-alpha emission from the Lyman-alpha forest
Open Access
- 1 March 1987
- journal article
- research article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 225 (1) , 1P-5P
- https://doi.org/10.1093/mnras/225.1.1p
Abstract
It is suggested that high-dispersion long-slit spectra or very narrow-band etalon images of ‘blank’ sky could reveal patches of Ly-α line emission from the population of clouds whose absorption produces the ‘Ly-α forest’ in QSO spectra. A non-observation can put limits on the ionizing background at high redshift which are better than those obtainable by direct measurements of background light.Keywords
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