Constraining intermediate-mass black holes from the stellar disc of SgrA*

Abstract Stars evolving around a supermassive black hole see their orbital orientations diffuse efficiently, process called “vector resonant relaxation”. In particular, stars within the same disc, i.e. neighbors in orientations, will slowly away from one another through this stochastic process. We use jointly (i) detailed kinetic predictions for efficiency of dilution and (ii) recent observation stellar disc SgrA*, at centre Milky-Way, to constrain SgrA*’s unobserved cluster. Notably, we investigate quantitatively impact population intermediate mass holes on survivability disc.