857 citations · 3.8k across the 25 of their papers we have counts for
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Modeling active galactic nuclei: ongoing problems for the faint-end of the luminosity function
F. Marulli, E. Branchini, L. Moscardini +1
We consider simple semi-analytic models that relate the active galactic nuclei (AGN) evolution to the merging history of their host dark matter haloes and quantify their ability of…
The importance of dry and wet merging on the formation and evolution of elliptical galaxies
L. Ciotti, B. Lanzoni, M. Volonteri
With the aid of a simple yet robust approach we investigate the influence of dissipationless and dissipative merging on galaxy structure, and the consequent effects on the scaling…
Unresolved X-ray background: clues on galactic nuclear activity at z>6
R. Salvaterra, F. Haardt, M. Volonteri
We study, by means of dedicated simulations of massive black hole build-up, the possibility to constraint the existence and nature of the AGN population at z>6 with available and p…
Supermassive black hole mergers and cosmological structure formation
Marta Volonteri
Massive black holes (MBHs), with masses in the range 10^3-10^8 Msolar, which merge with a companion black hole of similar mass are expected to be the most powerful source of gravit…
Quasars at z=6: the survival of the fittest
M. Volonteri, M. J. Rees
The Sloan Digital Sky survey detected luminous quasars at very high redshift, z>6. Follow-up observations indicated that at least some of these quasars are powered by supermassive…
Constraints on the Accretion History of Massive Black Holes from Faint X-ray Counts
Marta Volonteri, Ruben Salvaterra, Francesco Haardt
We investigate how hierarchical models for the co-evolution of the massive black hole (MBH) and AGN population can reproduce the observed faint X-ray counts. We find that the main…