1999
DOI: 10.1086/306618
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Observation of Centaurus A by theRossi X‐Ray Timing Explorer

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Cited by 18 publications
(26 citation statements)
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“…This is consistent with emission from material at a large distance from the site of the hard X-ray emission. The lack of change in the flux of the Cen A iron line over 20 years despite significant changes in the strength of the observed hard X-ray continuum (Rothschild et al 1999), supports this suggestion that the absorbing/fluorescing material is at least several parsecs from the central engine or insensitive to contunuum variations (e.g. Miniutti et al 2003).…”
Section: Previous Observationssupporting
confidence: 54%
“…This is consistent with emission from material at a large distance from the site of the hard X-ray emission. The lack of change in the flux of the Cen A iron line over 20 years despite significant changes in the strength of the observed hard X-ray continuum (Rothschild et al 1999), supports this suggestion that the absorbing/fluorescing material is at least several parsecs from the central engine or insensitive to contunuum variations (e.g. Miniutti et al 2003).…”
Section: Previous Observationssupporting
confidence: 54%
“…INTEGRAL observations confirm the lack of a Compton reflection, as adding this component does not improve the fits and results in a reflection fraction <0.1. Only an upper limit can be derived from JEM-X data for the fluorescence iron line at 6.4 keV, with a flux an order of magnitude above the values found in the literature (Grandi et al 2003;Rothschild et al 1999).…”
Section: Discussion On Individual Sourcesmentioning
confidence: 79%
“…It is generally modeled with a power law heavily absorbed by dense and probably stratified matter (N H $ 10 À23 cm À2 ) and by an iron line (Mushotzky et al 1978;Wang et al 1986;Morini et al 1989;Miyazaki et al 1996;Turner et al 1997;Sugizaki et al 1997). In contrast to Seyfert galaxies, the iron line of Cen A is not associated with a strong Compton reflection (Miyazaki et al 1996;Woźniak et al 1998;Rothschild et al 1999), as one would expect if the line were produced by cold and optically thick gas. This convinced many authors that the Fe feature is produced by the cold, dense, but optically thin, gas that is also responsible for the observed photoelectric absorption (N H ) surrounding the X-ray source (Miyazaki et al 1996;Woźniak et al 1998;Miyazaki et al 1996;Benlloch et al 2001).…”
Section: Introductionmentioning
confidence: 99%