Spin-Orbit Misalignment in Close Binaries with Two Compact Objects

摘要: Spin-orbit misalignment in coalescing compact binaries affects their gravitational radiation waveforms. When the angles are large (30°), detection efficiency of coalescence events can decrease significantly if effects not modeled. In this paper, we consider formation close and calculate expected after second core collapse event. Depending on progenitor parameters assumptions made about supernova kicks, find that 30%-80% containing a black hole neutron star coalesce within 1010 yr have larger than 30°, significant fraction them could remain undetected. The calculations allow us to place strong constraints progenitors such kick magnitudes required for formation. We also discuss with two holes effect nonisotropic kicks.