Fermi Gamma-ray Space Telescope

MHD Accretion Disk Winds and the Blazar Sequence

demosthenes kazanas
(Stella Boula, Apostolos Mastichiadis)


The launch of {em Fermi} produced a significant number of AGN detections to allow statistical treatment of their properties. It confirmed the ``Blazar Sequence" established by EGRET and indicated a potentially novel one, namely that of the ``Blazar Divide" in FSRQs and BL Lacs according to their gamma-ray spectral index and luminosity. An MHD accretion wind model that describes the distribution of matter and magnetic fields in AGN over 5-6 decades in radius and provides a successful account of the Seyfert X-ray absorber properties, provides the vestiges of an account of the observed blazar classification in terms of a single parameter. The model We propose to employ this model to model in detail the broad band blazar spectra and their statistical properties in terms of the physical parameters of these MHD winds.