Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 842, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/aa7551
Keywords
galaxies: individual (ESO 428-G014); galaxies: ISM; galaxies: jets; galaxies: Seyfert; X-rays: general
Categories
Funding
- Chandra Guest Observer program [GO5-16090X]
- NASA [NAS8-03060]
Ask authors/readers for more resources
We report the discovery of kiloparsec-scale diffuse emission in both the hard continuum (3-6 keV) and in the Fe-K alpha line in the Compton thick (CT) Seyfert galaxy ESO 428-G014. This extended hard component contains at least similar to 24% of the observed 3-8 keV emission, and follows the direction of the extended optical line emission (ionization cone) and radio jet. The extended hard component has similar to 0.5% of the intrinsic 2-10 keV luminosity within the bi-cones. A uniform scattering medium of density 1 cm(-3) would produce this luminosity in a 1 kpc path length in the bi-cones. Alternatively, higher column density molecular clouds in the disk of ESO 428-G014 may be responsible for these components. The continuum may also be enhanced by the acceleration of charged particles in the radio jet. The steeper spectrum (Gamma similar to 1.7 +/- 0.4) of the hard continuum outside of the central 1.'' 5 radius nuclear region suggests a contribution of scattered/fluorescent intrinsic Seyfert emission. Ultrafast nuclear outflows cannot explain the extended Fe-K alpha emission. This discovery suggests that we may need to revise the picture at the base of our interpretation of CT AGN spectra.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available