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Optical variability of QSOs and the intervening medium |
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| Authors: | D Basu |
| Institution: | (1) Department of Physics, University of the West Indies, St. Augustine, Trinidad, W.I. |
| Abstract: | It is suggested that the very long-term optical variability of QSOs in the list of Netzer and Sheffer (1983) is possibly due to changes in the intervening medium over the years along the line-of-sight through which light travels. |
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