Broad Band X-Ray Telescope Observations of NGC 4151: Iron Line Diagnostics
Abstract
The Fe K{ALPHA} emission line is a potentially powerful diagnostic tool in the X-ray spectra of AGNs, however, this feature has previously been observed with relatively poor spectral resolution. The Broad Band X- Ray telescope (BBXRT) has provided us with the first high-quality, medium-resolution X-ray spectral data. We are able to constrain the width of the 6.4 keV Fe Kα line in NGC 4151 to be less than 160 eV FWHM (7,500 km s^-1^), in contrast with former measurements of the line width. Also, we have limited information on the shape of the line profile. In addition to the strong narrow Fe Kα feature, we detect weaker broad residuals between 5-8 keV.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1992
- DOI:
- 10.1086/186658
- Bibcode:
- 1992ApJ...401L..11W
- Keywords:
-
- Line Spectra;
- Metallicity;
- Seyfert Galaxies;
- X Ray Telescopes;
- Broadband;
- Galactic Nuclei;
- Iron;
- Astrophysics;
- GALAXIES: INDIVIDUAL NGC NUMBER: NGC 4151;
- GALAXIES: NUCLEI;
- GALAXIES: SEYFERT