The Combined Swift - INTEGRAL X-ray (SIX) Survey
Abstract
In the local universe (z < 0.5) Active Galactic Nuclei (AGN) are best surveyed at hard X-ray energies by Swift/BAT and INTEGRAL/IBIS. These two coded mask telescopes are selecting a sizable number of AGN and they are uncovering the obscured AGN population. However, the sensitivity of surveys performed with coded mask telescopes is limited by rather large statistical and systematic errors. I will show that Swift/BAT and INTEGRAL/IBIS are so close in design that their observations can be combined. This results in a new survey: the Swift-INTEGRAL X-ray (SIX) survey that is a factor of ~2 more sensitive than the surveys of both instruments alone. I investigate the nature of the SIX selected AGN and the implications for the study of their space density and evolution. I will address also the impact of the SIX survey on recent and forthcoming hard X-ray missions with focusing optics.
- Publication:
-
AAS/High Energy Astrophysics Division #13
- Pub Date:
- April 2013
- Bibcode:
- 2013HEAD...1310908B