137 citations · 211 across the 6 of their papers we have counts for
6 papers
XMM-Newton observation of the ULIRG NGC 6240: The physical nature of the complex Fe K line emission
Th. Boller, R. Keil, G. Hasinger +5
We report on an XMM-Newton observation of the ultraluminous infrared galaxy NGC 6240. The 0.3-10 keV spectrum can be successfully modelled with: (i) three collisionally ionized pla…
XMM-Newton discovery of a sharp spectral feature at ~7 keV in the Narrow-Line Seyfert 1 galaxy 1H 0707-495
Th. Boller, A. C. Fabian, R. Sunyaev +6
We report the first detection of a sharp spectral feature in a Narrow-Line Seyfert 1 galaxy. Using XMM-Newton we have observed 1H0707-495 and find a drop in flux by a factor of mor…
XMM-Newton study of the ULIRG NGC 6240
Ralf Keil, Th. Boller, R. Fujimoto
A recently performed XMM-Newton observation of the ULIRG NGC 6240 clearly indicates the presence of an AGN contribution to its X-ray spectrum. In the 5.0 - 7.0 keV energy range the…
Detection of an X-ray periodicity in the Narrow-line Seyfert 1 Galaxy Mrk 766 with XMM-Newton
Th. Boller, R. Keil, J. Truemper +3
We have analyzed the timing properties of the Narrow-line Seyfert 1 galaxy Mrk 766 observed with XMM-Newton during the PV phase. The source intensity changes by a factor of 1.3 ove…
XMM-Newton observations of the BL Lac MS 0737+7441
Th. Boller, M. Gliozzi, G. Griffiths +5
We report on the XMM-Newton observations of the BL Lac object MS 0737.9+7441 during the performance verification phase. A simple power-law fit provides an adequate description of t…
BLR velocities in optically and X-ray selected AGN samples
Dieter Engels, Ralf Keil
We have analyzed optical spectra of 473 X-ray and 235 optically selected AGNs, to study their emission line properties. We present results of an analysis of the H-beta linewidths.…