منابع مشابه
The complex iron line in NGC 7469 observed by BeppoSAX
In this letter we present analysis of BeppoSAX data from a long look at the Seyfert 1 galaxy NGC 7469. The presence of a soft excess below 0.8 keV is confirmed by our analysis and no warm absorber component is required to fit the spectrum. A complex iron emission line and the Compton reflection hump are clearly detected. The profile of the line is too broad to associate this feature with distan...
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We report a new analysis of ASCA data on the iron K line complex in NGC 1068. The line complex basically consists of three components, as previously reported. A weak red wing of the 6.4 keV fluoresence iron K line is found. A plausible explanation is Compton scattering in optically thick, cold matter which can be identified with an obscuring torus or cold gas in the host galaxy. We also show th...
متن کامل3 The XMM - Newton Iron Line Profile of NGC 3783
We report on observations of the iron K line in the nearby Seyfert 1 galaxy, NGC 3783, obtained in a long, 2 orbit (∼ 240 ks) XMM-Newton observation. The line profile obtained exhibits two strong narrow peaks at 6.4 keV and at 7.0 keV, with measured line equivalent widths of 120 and 35 eV respectively. The 6.4 keV emission is the Kα line from near neutral Fe, whilst the 7.0 keV feature probably...
متن کاملNGC 5506 Unmasked as a Narrow Line Seyfert 1 : A Direct View of the Broad Line Region using Near - IR Spectroscopy ⋆
This letter presents incontrovertible evidence that NGC 5506 is a Narrow Line Seyfert 1 (NLSy1). Our new 0.9–1.4μm spectrum of its nucleus clearly shows the permitted O Iλ1.1287μm line (with full width at half maximum < 2000 km s) and the ‘1 micron Fe II lines’. These lines can only originate in the optically-thick broad line region (BLR) and, among Seyfert nuclei the latter series of lines are...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2001
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20011209