|
|||||
|
|
The quest for Type 2 quasars: Chandra observations of luminous obscured quasars in the Sloan Digital Sky Survey |
|
| Authors: | Cristian Vignali Dave M Alexander Andrea Comastri |
| Institution: | Dipartimento di Astronomia, Universitàdegli Studi di Bologna, Via Ranzani 1, 40127 Bologna, Italy;INAF –Osservatorio Astronomico di Bologna, Via Ranzani 1, 40127 Bologna, Italy;Department of Physics, Durham University, South Road, Durham DH1 3LE |
| Abstract: | |
| Keywords: | galaxies: active galaxies: nuclei quasars: general |