X-RAY SPECTROSCOPY OF THE SCATTERED EMISSION IN NGC-1068

Citation
K. Iwasawa et al., X-RAY SPECTROSCOPY OF THE SCATTERED EMISSION IN NGC-1068, Astrophysics and space science, 248(1-2), 1997, pp. 199-206
Citations number
35
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
0004640X
Volume
248
Issue
1-2
Year of publication
1997
Pages
199 - 206
Database
ISI
SICI code
0004-640X(1997)248:1-2<199:XSOTSE>2.0.ZU;2-O
Abstract
We discuss the iron K line complex in NGC 1068. The line complex basic ally consists of three components, as previously reported. A new analy sis of the ASCA data shows that cold reflection appears to dominate th e observed X-ray emission above 4 keV based on the detection of 'Compt on shoulder', a weak red wing of the 6.4 keV fluorescence iron K line, and a very flat continuum. The other two weaker lines at higher energ ies can be identified with FeXXV and FeXXVI and suggest an highly ioni zed X-ray mirror as well, although the line energies are systematicall y lower than those expected from the resonant lines, consistent with a redshift by 1.5%.