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1999MNRAS.309..113V - Mon. Not. R. Astron. Soc., 309, 113-124 (1999/October-2)
X-ray spectral complexity in narrow-line Seyfert 1 galaxies.
VAUGHAN S., REEVES J., WARWICK R. and EDELSON R.
Abstract (from CDS):
Most notably, six of the 22 objects show evidence for a broad absorption feature centred in the energy range 1.1-1.4keV, which could be the signature of resonance absorption in highly ionized material. A further three sources exhibit `warm absorption' edges in the 0.7-0.9keV bandpass. Remarkably, all nine `absorbed' sources have Hβ linewidths below 1000km.s–1, which is less than the median value for the sample taken as a whole. This tendency for very narrow linewidths to correlate with the presence of ionized absorption features in the soft X-ray spectra of NLS1s, if confirmed in larger samples, may provide a further clue in the puzzle of active galactic nuclei.
Abstract Copyright: 1999, Royal Astronomical Society
Journal keyword(s): accretion, accretion discs - galaxies: active - galaxies: Seyfert - X-rays: galaxies
Simbad objects: 23
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