Iron line emission and variability in the X-ray spectrum of the Seyfert galaxy NGC 5548
Abstract
The MSSL spectrometer on the Ariel V satellite has detected a variable iron emission feature in the X-ray spectrum of NGC 5548. Comparison with other observations indicates that both the slope and intensity of the continuum spectrum are variable. It is suggested that the iron emission is due to fluorescent excitation of the gas in the broad emission-line region surrounding the X-ray emitting nucleus of the galaxy.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- October 1980
- DOI:
- 10.1093/mnras/193.1.15P
- Bibcode:
- 1980MNRAS.193P..15H
- Keywords:
-
- Galactic Radiation;
- Iron;
- Line Spectra;
- Quasars;
- Seyfert Galaxies;
- X Ray Sources;
- Ariel 5 Satellite;
- Emission Spectra;
- X Ray Spectra;
- X Ray Spectroscopy;
- Astrophysics