Some constraints on quasar progenitors and quasar evolution
نویسندگان
چکیده
منابع مشابه
On Quasar Masses and Quasar Host Galaxies
The mass of massive black holes in quasar cores can be deduced using the typical velocities of Hβ-emitting clouds in the Broad Line Region (BLR) and the size of this region. However, this estimate depends on various assumptions and is susceptible to large systematic errors. The Hβ-deduced black hole mass in a sample of 14 bright quasars is found here to correlate with the quasar host galaxy lum...
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Redshift distortions, both geometrical and kinematical, of quasar clustering are simulated, for the Two-Degree Field QSO Redshift Survey (2QZ), showing that they are very effective to constrain the cos-mological density and equation of state parameters, Ω m0 , Ω x0 and w. Particularly, it emerges that, for the cosmological constant case, the test is especially sensitive to the difference Ω m0 −...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1986
ISSN: 0074-1809
DOI: 10.1017/s0074180900153136