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Quasar complexity simplified

An analysis of a sample comprising some 20,000 mass-accreting supermassive black holes, known as quasars, shows that most of the diverse properties of these cosmic beacons are explained by only two quantities. See Letter p.210

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Figure 1: Helpful jets.



  1. 1

    Schmidt, M. Nature 197, 1040 (1963).

    ADS  Article  Google Scholar 

  2. 2

    Lynden-Bell, D. Nature 223, 690–694 (1969).

    ADS  Article  Google Scholar 

  3. 3

    Shen, Y. & Ho, L. C. Nature 513, 210–213 (2014).

    ADS  CAS  Article  Google Scholar 

  4. 4

    Boroson, T. A. & Green, R. F. Astrophys. J. Suppl. Ser. 80, 109–135 (1992).

    ADS  CAS  Article  Google Scholar 

  5. 5

    Wills, B. J. & Browne, I. W. A. Astrophys. J. 302, 56–63 (1986).

    ADS  CAS  Article  Google Scholar 

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Correspondence to Michael S. Brotherton.

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Brotherton, M. Quasar complexity simplified. Nature 513, 181–182 (2014).

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