X-ray continuum and evidence for an iron emission line from the quasar E1821 + 643

Details X-ray continuum and evidence for an iron emission line from the quasar E1821 + 643 X-ray continuum and evidence for an iron emission line from the quasar E1821 + 643

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...367..455k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 367, Feb. 1, 1991, p. 455-461.

Astronomy and Astrophysics

Astronomy

34

Emission Spectra, Iron, Quasars, X Ray Astronomy, X Ray Spectra, Absorption Spectra, Active Galactic Nuclei, Red Shift, Spectral Line Width

Scientific paper

This paper reports on the 2-10 keV spectrum of the quasar E1821 + 643, obtained with the large-area proportional counters aboard the Ginga spacecraft on two occasions: May 12-14, 1987 and September 27, 1988. The spectrum shows strong evidence for the presence of a redshifted iron K emission line of a 5.1 + or - 0.2 keV energy, and an observed equivalent width of 210 + or - 80 eV. The E1821 + 643 appeared to be embedded within a cluster of galaxies which could contribute part of the observed line. A possibility is suggested that iron emission lines may be a common feature in X-ray spectra of quasars.

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