Highly ionized gas in the nucleus of the active galaxy MCG-6-30-15

Details Highly ionized gas in the nucleus of the active galaxy MCG-6-30-15 Highly ionized gas in the nucleus of the active galaxy MCG-6-30-15

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.359..215n&link_type=abstract

Nature (ISSN 0028-0836), vol. 359, no. 6392, p. 215, 216.

Astronomy and Astrophysics

Astronomy

107

Active Galactic Nuclei, Interstellar Gas, Ionized Gases, Seyfert Galaxies, X Ray Astronomy, X Ray Spectra, H I Regions, Oxygen Spectra, Spaceborne Astronomy, Spectral Energy Distribution

Scientific paper

Fluorescent emission from iron and the detection of a Compton reflection 'hump' in the X-ray spectra of many active galaxies are strong evidence for the presence of cold optically thick material in their nuclear regions. An apparent absorption edge at 8-9 keV, attributed to iron, in about half a large number of Seyfert galaxies indicates the additional presence of warm absorbing material, which could modify the emergent X-ray spectrum and explain flux-correlated changes in spectral shape. If this interpretation is correct, the warm absorber should give rise to a number of spectral features, particularly absorption edges, whose energy can be used to deduce the ionization state of the material. The detection of such a feature in the bright Seyfert Galaxy MCG-6-30-15, in the form of absorption at 0.8 keV arising from the presence of highly ionized oxygen is reported here. This warm absorber will be difficult to detect at other wavelengths but may contribute significantly to the overall X-ray opacity of the nuclear region.

Affiliated with

Also associated with

No associations

Rating

Highly ionized gas in the nucleus of the active galaxy MCG-6-30-15 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 Highly ionized gas in the nucleus of the active galaxy MCG-6-30-15, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Highly ionized gas in the nucleus of the active galaxy MCG-6-30-15 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1091848