We discuss the iron K line complex in NGC 1068. The line complex basically consists of three components, as previously reported. A new analysis of the ASCA data shows that cold reflection appears to dominate the observed X-ray emission above 4 keV based on the detection of 'Compton 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 energies can be identified with FeXXV and FeXXVI and suggest an highly ionized X-ray mirror as well, although the line energies are systematically lower than those expected from the resonant lines, consistent with a redshift by 1.5%.

Iwasawa K, Fabian AC, & Matt G (1997). X-ray spectroscopy of the scattered emission in NGC 1068. ASTROPHYSICS AND SPACE SCIENCE, 248(1-2), 199-206.

X-ray spectroscopy of the scattered emission in NGC 1068

MATT, Giorgio
1997

Abstract

We discuss the iron K line complex in NGC 1068. The line complex basically consists of three components, as previously reported. A new analysis of the ASCA data shows that cold reflection appears to dominate the observed X-ray emission above 4 keV based on the detection of 'Compton 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 energies can be identified with FeXXV and FeXXVI and suggest an highly ionized X-ray mirror as well, although the line energies are systematically lower than those expected from the resonant lines, consistent with a redshift by 1.5%.
Iwasawa K, Fabian AC, & Matt G (1997). X-ray spectroscopy of the scattered emission in NGC 1068. ASTROPHYSICS AND SPACE SCIENCE, 248(1-2), 199-206.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11590/147274
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