Abstract The methods that were adopted to estimate the black hole mass in black hole X-ray binaries and active galactic nuclei are briefly reviewed. The relations of black hole masses with other properties, such as X-ray variability, QPOs, radio and X-ray luminosities, are discussed and the analogy of microquasars and quasars is further demonstrated.
null
It accepts original submissions from all over the world and is internationally published and distributed by IOP