The role of black hole mass in quasar radio activity
نویسنده
چکیده
We use a homogeneous sample of ∼ 300, 0.3 < ∼ z < ∼ 3, radio-loud quasars drawn from the FIRST and 2dF QSO surveys to investigate a possible dependence of radio activity on black-hole mass. By analyzing composite spectra for the populations of radio-quiet and radio-loud QSOs – chosen to have the same redshift and luminosity distribution – we find with high statistical significance that radio-loud quasars are on average associated with black holes of masses ∼ 10M⊙, about twice as large as those measured for radio-quiet quasars (∼ 10M⊙). We also find a clear dependence of black hole mass on optical luminosity of the
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تاریخ انتشار 2005