Abstract
We discuss jet production from an advection dominated accretionflow (ADAF) around a rotating black hole (BH) in an electromagneticregime. An analytical expression for the jet power is derivedby using an equivalent circuit in the BH magnetosphere. It turns outthat a large fraction of jet powers is contributed from the innerregion of the ADAF, and the jet power depends sensitively on thedegree to which the flow is advection-dominated. In addition, weuse our model to fit the strong jet powers of several BL Lacobjects, which cannot be explained by virtue of the BZ process.
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