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LISA detection of massive black hole binaries: imprint of seed populations and of exterme recoils
A. Sesana, M. Volonteri, F. Haardt
All the physical processes involved in the formation, merging, and accretion history of massive black holes along the hierarchical build--up of cosmic structures are likely to leav…
Ejection of hypervelocity binary stars by a black hole of intermediate mass orbiting Sgr A*
A. Sesana, P. Madau, F. Haardt
The discovery of hypervelocity binary stars (HVBs) in the Galactic halo would provide definite evidence of the existence of a massive black hole companion to Sgr A*. Here we use an…
Gravitational waves from resolvable massive black hole binary systems and observations with Pulsar Timing Arrays
A. Sesana, A. Vecchio, M. Volonteri
Massive black holes are key components of the assembly and evolution of cosmic structures and a number of surveys are currently on-going or planned to probe the demographics of the…
Observing white dwarfs orbiting massive black holes in the gravitational wave and electro-magnetic window
A. Sesana, A. Vecchio, M. Eracleous +1
We consider a potentially new class of gravitational wave sources consisting of a white dwarf coalescing into a massive black hole in the mass range ~10^4-10^5\msun. These sources…
The stochastic gravitational-wave background from massive black hole binary systems: implications for observations with Pulsar Timing Arrays
Alberto Sesana, Alberto Vecchio, Carlo Nicola Colacino
Massive black hole binary systems, with masses in the range ~10^4-10^10 \msun, are among the primary sources of gravitational waves in the frequency window ~10^-9 Hz - 0.1 Hz. Puls…
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…