Name    E_mail_Address  Scientific_Session      Contribution_type       Title   Authors_affiliations    Abstract        
ISICHEI        CHARLES CHINWEUBA        d_o533@yahoo.com        EAS Symp.6:Dynamics of Galaxies and Galactic Nuclei.    poster  The Relation between the Inclinations of Broad Line Regions and the Accretion Disk      El Wafa Center  According to the standard model, an active galactic nucleus (AGN) consists of an inner accretion disk with a jet around a central massive black hole, and a number of outer broad line regions (BLRs) and narrow line regions (NLRs). The geometrical relationship between the BLRs and the accretion disk is not well understood. Assuming the motion of the BLRs is virialized and its configuration is disk-like, I derived its inclination to the line of sight for a sample of AGNs from their bulge stellar velocity dispersion, their size of the BLRs and their H linewidth. Compared with the inclination of the accretion disk obtained from the X-ray Fe K emission lines, we found that there is no positive correlation between the two. MY results showed that BLRs are not coplanar with the a
 ccretion disk and that I should be cautious of using the BLRs inclination as the disk inclination. The non-coplanar geometry of the outer BLRs and the inner accretion disk provides clues to the origin of BLRs and the properties of the accretion disk. Our preferable interpretation is that BLRs arise out of the outer part of a warped accretion disk