Anatomy of the AGN in NGC 5548: the XMM/NuSTAR/INTEGRAL view
Abstract
After a very successful multi-satellite campaign on Mrk 509 in 2009, we conducted a similar campaign on the AGN NGC 5548 in 2013. During the latter the source appeared unusually strongly absorbed in the soft X-rays, and signatures of strong outflows were also present in the UV. While a talk giving an overview of the campaign (PI: J. Kaastra) is also proposed at this conference, we will focus here on the part of the campaign where XMM/NuSTAR and INTEGRAL operated simultaneously. It appears that the reflection component is consistent with being constant during the campaign, then originating from remote material at least a few light months away from the central X-ray source. The primary continuum above 5 keV is well fitted by a power law with standard value (~1.7-1.8) with only lower limits on the presence of a high energy cut-off. The use of the XMM/OM as well as simultaneous HST/COS observations allow us also to compare the broad band UV/X-ray spectra with realistic comptonisation models. The physical interpretation will be discussed.
- Publication:
-
The X-ray Universe 2014
- Pub Date:
- July 2014
- Bibcode:
- 2014xru..confE.199U