ASCA observations of type-2 Seyfert galaxies: II. The Importance of X-ray Scattering and Reflection

Details ASCA observations of type-2 Seyfert galaxies: II. The Importance of X-ray Scattering and Reflection ASCA observations of type-2 Seyfert galaxies: II. The Importance of X-ray Scattering and Reflection

1997-05-12

arxiv.org/abs/astro-ph/9705087v1

Astronomy and Astrophysics

Astrophysics

27 pages, 6 figures. LaTeX with encapsulated postscript. To appear in the Astrophysical Journal. Also available via http://l

Scientific paper

10.1086/304701

We discuss the importance of X-ray scattering and Compton reflection in type-2 Seyfert galaxies, based upon the analysis of ASCA observations of 25 such sources. Consideration of the iron Kalpha, [O III] line and X-ray variability suggest that NGC 1068, NGC 4945, NGC 2992, Mrk 3, Mrk 463E and Mrk 273 are dominated by reprocessed X-rays. We examine the properties of these sources in more detail. We find that the iron Kalpha complex contains significant contributions from neutral and high-ionization species of iron. Compton reflection, hot gas and starburst emission all appear to make significant contributions to the observed X-ray spectra. Mrk 3 is the only source in this subsample which does not have a significant starburst contamination. The ASCA spectrum below 3 keV is dominated by hot scattering gas with U_X ~ 5, N_H ~ 4 x 10^23 cm^-2. This material is more highly ionized than the zone of material comprising the warm absorber seen in Seyfert~1 galaxies, but may contain a contribution from shock-heated gas associated with the jet. Estimates of the X-ray scattering fraction cover 0.25 - 5%. The spectrum above 3 keV appears to be dominated by a Compton reflection component although there is evidence that the primary continuum component becomes visible close to 10 keV.

Affiliated with

Also associated with

No associations

Rating

ASCA observations of type-2 Seyfert galaxies: II. The Importance of X-ray Scattering and Reflection does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with ASCA observations of type-2 Seyfert galaxies: II. The Importance of X-ray Scattering and Reflection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ASCA observations of type-2 Seyfert galaxies: II. The Importance of X-ray Scattering and Reflection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-664566