Type II Quasars from the Sloan Digital Sky Survey. IV. Chandra and XMM‐Newton Observations Reveal Heavily Absorbed Sources
Ptak, Andrew, Zakamska, Nadia L., Strauss, Michael A., Krolik, Julian H., Heckman, Timothy M., Schneider, Donald P., Brinkmann, JonVolume:
637
Language:
english
Journal:
The Astrophysical Journal
DOI:
10.1086/498233
Date:
January, 2006
File:
PDF, 333 KB
english, 2006