Abstract
THERE are several independent methods for estimating lower limits to the masses of QSOs based on various assumptions. For example, if the QSO is at a cosmological distance then its luminosity is known. If it is also assumed that the QSO's luminosity has remained approximately the same over its estimated lifetime (∼105–106 yr), then a lower limit on its mass may be obtained by equating the total energy radiated to mc2.
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WHITMIRE, D., DAVIDS, C. Lower Limits on the Masses of Quasi-stellar Objects. Nature Physical Science 231, 102–103 (1971). https://doi.org/10.1038/physci231102a0
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DOI: https://doi.org/10.1038/physci231102a0
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