High-redshift obscured quasars
| dc.creator | Martinez-Sansigre, Alejo | |
| dc.creator | Rawlings, Steve | |
| dc.date | 2007-01-05 | |
| dc.date | 2007-01-10 | |
| dc.date.accessioned | 2026-07-07T07:39:15Z | |
| dc.date.available | 2026-07-07T07:39:15Z | |
| dc.description | Using mid-infrared and radio criteria, we select a sample of candidate z~2 obscured quasars. Optical spectroscopy confirms about half of these as type-2 quasars, and modelling the population suggests 50-80% of the quasars are obscured. We find some flat radio spectrum type-2 quasars, and tentative evidence for obscuration unrelated to the torus. Using a similar sample, we also find evidence for a significant fraction of Compton-thick quasars. | |
| dc.description | 4 pages, 1 figure. Conference proceedings to appear in "The Central Engine of Active Galactic Nuclei", ed. L. C. Ho and J.-M. Wang (San Francisco: ASP) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0701143 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0701143 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/121381 | |
| dc.subject | Astrophysics | |
| dc.title | High-redshift obscured quasars | |
| dc.type | text |