139 citations · 649 across the 14 of their papers we have counts for
11 papers · 1 filter
Secular Dynamics around a Supermassive Black Hole via Multipole Expansion
Jean-Baptiste Fouvry, Walter Dehnen, Scott Tremaine +1
In galactic nuclei, the gravitational potential is dominated by the central supermassive black hole, so stars follow quasi-Keplerian orbits. These orbits are distorted by gravitati…
Relaxation in a Fuzzy Dark Matter Halo. II. Self-consistent kinetic equations
Ben Bar-Or, Jean-Baptiste Fouvry, Scott Tremaine
Fuzzy dark matter (FDM) is composed of ultra-light bosons having a de Broglie wavelength that is comparable to the size of the stellar component of galaxies at typical galactic vel…
Tidal disruption event rates in galaxy merger remnants
Hugo Pfister, Ben Bar-Or, Marta Volonteri +2
The rate of tidal disruption events (TDEs) depends sensitively on the stellar properties of the central galactic regions. Simulations show that galaxy mergers cause gas inflows, tr…
Vector Resonant Relaxation of Stars around a Massive Black Hole
Jean-Baptiste Fouvry, Ben Bar-Or, Pierre-Henri Chavanis
In the vicinity of a massive black hole, stars move on precessing Keplerian orbits. The mutual stochastic gravitational torques between the stellar orbits drive a rapid reorientati…
Relaxation in a Fuzzy Dark Matter Halo
Ben Bar-Or, Jean-Baptiste Fouvry, Scott Tremaine
Dark matter may be composed of light bosons, , with a de Broglie wavelength in typical galactic potentials. Such `fuzzy'…
Scalar Resonant Relaxation of Stars Around a Massive Black Hole
Ben Bar-Or, Jean-Baptiste Fouvry
In nuclear star clusters, the potential is governed by the central massive black hole, so that stars move on nearly Keplerian orbits and the total potential is almost stationary in…
Relaxation in self-gravitating systems
Jean-Baptiste Fouvry, Ben Bar-Or
The long timescale evolution of a self-gravitating system is generically driven by two-body encounters. In many cases, the motion of the particles is primarily governed by the mean…
A universal minimal mass scale for present-day central black holes
Tal Alexander, Ben Bar-Or
Intermediate-mass black holes (IMBHs) of mass solar masses, , are the long-sought missing link between stellar black holes, born of…
Steady state relativistic stellar dynamics around a massive black hole
Ben Bar-Or, Tal Alexander
A massive black hole (MBH) consumes stars whose orbits evolve into the small phase-space volume of unstable orbits, the "loss-cone", which take them directly into the MBH, or close…
The statistical mechanics of relativistic orbits around a massive black hole
Ben Bar-Or, Tal Alexander
Stars around a massive black hole (MBH) move on nearly fixed Keplerian orbits, in a centrally-dominated potential. The random fluctuations of the discrete stellar background cause…
Stellar Energy Relaxation around A Massive Black Hole
Ben Bar-Or, Gábor Kupi, Tal Alexander
[abridged] Energy relaxation around a massive black hole (MBH) is key to establishing the dynamical state of galactic nuclei, and the nature of close stellar interactions with the…