Abstract
Ever since their discovery the origin of quasar absorption lines has been a subject of considerable controversy (see ref. 1). In this note we consider the consequences of the hypothesis that at least some of the absorption lines arise in galaxies. These galaxies could be ordinary ones with 50–100 kpc haloes2, or perhaps more compact but more common (at z ∼1–2) objects of comparable mass.
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Krolik, J., Kwan, J. Quasar image doubling associated with absorption systems. Nature 281, 550–551 (1979). https://doi.org/10.1038/281550a0
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DOI: https://doi.org/10.1038/281550a0
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