Broad Band X-Ray Telescope observations of NGC 4151 - Iron line diagnostics

Details Broad Band X-Ray Telescope observations of NGC 4151 - Iron line diagnostics Broad Band X-Ray Telescope observations of NGC 4151 - Iron line diagnostics

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...401l..11w&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 401, no. 1, p. L11-L14.

Astronomy and Astrophysics

Astrophysics

18

Line Spectra, Metallicity, Seyfert Galaxies, X Ray Telescopes, Broadband, Galactic Nuclei, Iron

Scientific paper

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 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 K-alpha line in NGC 4151 to be less than 160 eV FWHM (7,500 km/s), 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 K-alpha feature, we detect weaker broad residuals between 5-8 keV.

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