Black Hole Spin and Accretion Disk Magnetic Field Strength Estimates for more than 750 AGN and Multiple GBH

Understand

Black hole systems, comprised of a black hole, accretion disk, and collimated outflow are studied here.

• Three AGN samples including 753 AGN, and 102 measurements of 4 GBH are studied.
• Applying the theoretical considerations described by Daly (2016), general expressions for the black hole spin function and accretion disk magnetic field strength are presented and applied to obtain the black hole spin function, spin, and accretion disk magnetic field strength in dimensionless and physical units for each source.
• Relatively high spin values are obtained; spin functions indicate typical spin values of about (0.6 - 1) for the sources.