On the origin of soft X-ray emission in FRII radio galaxies. The case of 3C 33 and Cygnus A.
Abstract
The nature of soft X-ray emission in FRII powerful radio galaxies is still unclear. A recent interpretation assumes that this soft X-ray emission is related to extended photoionized circumnuclear gas, as observed in Seyfert 2s. In two sources (3C 445 and 3C 234) the soft excess has been resolved for the first time. It seems to be well fitted with highly ionized lines overimposed to a weak continuum. Warm possibly outflowing gas located well beyond the torus, could be responsible for the observed features. We will present XMM (EPIC+RGS) and Chandra (ACIS) observations of other two Narrow Line Radio Galaxies (NLRG), 3C 33 and Cygnus A, which seem to support this scenario.
- Publication:
-
37th COSPAR Scientific Assembly
- Pub Date:
- 2008
- Bibcode:
- 2008cosp...37.3203T