Effects of Local Dissipation Profiles on Quasi-periodic Oscillations

We investigate high-frequency quasi-periodic oscillations (HFQPO) from black hole X-ray binary accretion disks. We construct numerical QPO power spectra over a wide range of black hole spins. Our models incorporate simulation-motivated spatial local dissipation profiles as well as effects of non-zero torque on the inner disk boundary. We found that the QPO power spectra amplitude decreased with increased dissipation near the disk photosphere. Moreover, the QPO power spectra became broader, upon the incorporation of relativistic effects.