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astro-ph2000★ 36 cited
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…
astro-ph2000★ 3 cited
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…
astro-ph2000
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.…