Black Hole Spin-Orbit Misalignment in Galactic X-ray Binaries

摘要: In black hole X-ray binaries, a misalignment between the spin axis of and orbital angular momentum can occur during supernova explosion that forms compact object. this letter we present population synthesis models Galactic study probability density function angle, its dependence on our model parameters. modeling, also take into account evolution angle due to accretion material onto binary phase. The major factor sets for binaries is natal kick may receive at formation. However, large kicks tend disrupt while small allow formation XRBs naturally select systems with angles. Our calculations predict majority (>67%) field BH have rather (>10 degrees) angles, some reach angles as high ~90 degrees even higher. This results robust among all models. assumption extensively used observationally estimate magnitudes, first time are able confirm using detailed calculations.