Image Details
 
                    Caption: Fig. 1.
Overall X‐ray emissivity contributed by AGNs with given X‐ray luminosity ﹩L_{\mathrm{X}\,}﹩ and redshift z. We also show the evolutionary tracks of the luminosity of AGNs hosted in galaxies with different DM masses corresponding to (from left to right) 1013, 1012, ﹩2.5\times 10^{11}﹩, and ﹩5\times 10^{10}﹩ ﹩M_{\odot }﹩.
© 2004. The American Astronomical Society. All rights reserved. Printed in U.S.A.