The Non-Thermal Sky Above 15 keV
Abstract
We are living in prosperous times for high-energy astronomy with many missions currently keeping watch of the non-thermal sky. After more than a decade of observations, Swift/BAT and INTEGRAL/IBIS still perform surveys. Their shallowness is largely complemented by deep surveys of NuSTAR, which are driven by its one-of-a-kind focusing optics. Yet, to study the evolution of AGNs in the local universe we rely on wide-field surveys with the coded-mask detectors of BAT and IBIS. However, coded-mask technology suffers from an inevitable low sensitivity due to the optics. In this talk I will show how the sensitivity of the wide-field surveys with BAT and IBIS can be boosted by combining their independent observations. Especially the INTEGRAL mission has performed with IBIS deep observations to allow this technique reaching unmatched survey sensitivity. I will review this observing technique and show how the combined observations of BAT and IBIS tie in well with deep NuSTAR surveys.
- Publication:
-
42nd COSPAR Scientific Assembly
- Pub Date:
- July 2018
- Bibcode:
- 2018cosp...42E.405B