223 citations · 420 across the 4 of their papers we have counts for
5 papers
Interaction of massive black hole binaries with their stellar environment: III. Scattering of bound stars
Alberto Sesana, Francesco Haardt, Piero Madau
We develop a formalism for studying the dynamics of massive black hole binaries embedded in gravitationally-bound stellar cusps, and study the binary orbital decay by three-body in…
Hypervelocity stars and the environment of Sgr A*
A. Sesana, F. Haardt, P. Madau
Hypervelocity stars (HVSs) are a natural consequence of the presence of a massive nuclear black hole (Sgr A*) in the Galactic Center. Here we use the Brown et al. sample of unbound…
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…
Interaction of massive black hole binaries with their stellar environment: I. Ejection of hypervelocity stars
A. Sesana, F. Haardt, P. Madau
We use full three-body scattering experiments to study the ejection of hypervelocity stars (HVSs) by massive black hole binaries (MBHBs) at the center of galaxies. Ambient stars dr…
Cosmic Backgrounds from Miniquasars
R. Salvaterra, F. Haardt, A. Ferrara
A large population of Intermediate Mass Black Holes (IMBHs) might be produced at early cosmic times as a left over of the evolution of the very massive first stars. Accretion onto…