337 citations · 609 across the 4 of their papers we have counts for
5 papers · 1 filter
XMM-Newton observations of the Narrow-Line Seyfert 1 galaxy Mrk 335 in an historical low X-ray flux state
Dirk Grupe, Stefanie Komossa, Luigi C. Gallo +5
We report the discovery of strong soft X-ray emission lines and a hard continuum above 2 keV in the Narrow-Line Seyfert 1 galaxy Mrk 335 during an extremely low X-ray flux state. M…
The narrow-line region of narrow-line and broad-line type 1 AGN I. A zone of avoidance in density
Dawei Xu, Stefanie Komossa, Hongyan Zhou +2
The properties of narrow-line Seyfert 1 (NLS1) galaxies, the links and correlations between them, and the physics behind them, are still not well understood. Apart from accretion r…
A narrow line Seyfert 1--blazar composite nucleus in 2MASX J0324+3410
Hongyan Zhou, Tinggui Wang, Weimin Yuan +7
We report the identification of 2MASX J032441.19+341045.9 (hereafter 2MASX J0324+3410) with an appealing object which shows the dual properties of both a narrow line Seyfert 1 gala…
Radio-loud Narrow-Line Type 1 Quasars
S. Komossa, W. Voges, D. Xu +5
We present the first systematic study of (non-radio-selected) radio-loud narrow-line Seyfert 1 (NLS1) galaxies. Cross-correlation of the `Catalogue of Quasars and Active Nuclei' wi…
The radio loud narrow-line quasar SDSSJ172206.03+565451.6
S. Komossa, W. Voges, H. -M. Adorf +3
We report identification of the radio loud narrow-line quasar SDSS J172206.03+565451.6 which we found in the course of a search for radio loud narrow-line Active Galactic Nuclei (A…