Abstract
It is shown that the emission lines observed in quasars can be satisfactorily explained as being due to laser action in certain atomic species in the expanding envelope of a star. There is no need to assume a redshift.
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Varshni, Y.P. Alternative explanation for the spectral lines observed in quasars. Astrophys Space Sci 37, L1–L6 (1975). https://doi.org/10.1007/BF00646077
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DOI: https://doi.org/10.1007/BF00646077