Tidal disruption rates in non-spherical galactic nuclei formed by galaxy mergers

摘要: We explore the rates of tidal disruption events (TDEs) stars by supermassive black holes (SBHs) in galactic nuclei formed mergers followed a formation and coalescence binary SBH. Such systems initially have deficit on low-angular-momentum orbits caused slingshot process during SBH stage, which tends to reduce flux into compared steady-state value. On other hand, newly nucleus has non-spherical shape, enhances mixing angular momentum and, thus, TDE rate. In galaxies with relatively low masses (), relaxation times are short enough wash out anisotropy initial conditions, for more massive SBHs enhancement due non-sphericity turns be important than its suppression anisotropy. Therefore, present-day generally exceed conventional estimates based spherical isotropic approximation. thus conjecture that lower observationally inferred theoretical predictions cannot attributed depletion binaries.