Possible evidence for a massive black hole in a quasar with double redshift systems
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With the aid of a simple black hole model of quasars we have found that the majority of the distinguishable emission lines in the spectrum of the quasar 1604+179 can be assigned to two redshift systems,z r =3.712 andz b =2.701. The appearance of double emission redshifts means that this quasar might be a massive black hole (of mass 108M•≤M≤1011M•) with a ring-like emission line region (of radius 1 light-day ≤r0≤1 light-year) in its accretion disk.
KeywordsBlack Hole Emission Line Accretion Disk Massive Black Hole Line Region
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