Published in
Cambridge University Press (CUP), Proceedings of the International Astronomical Union, S267(5), p. 239-247, 2009
DOI: 10.1017/s1743921310006344
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Quasar Mass Functions Across Cosmic Time
Journal article published in 2009 by
Marianne Vestergaard 
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Abstract
AbstractI present mass functions of actively accreting black holes detected in different quasar surveys which in concert cover a wide range of cosmic history. I briefly address what we learn from these mass functions. I summarize the motivation for such a study and the methods by which we determine black hole masses.
