210 citations · 704 across the 11 of their papers we have counts for
4 papers · 1 filter
Sub-mm detection of a high redshift Type 2 QSO
V. Mainieri, D. Rigopoulou, I. Lehmann +6
We report on the first SCUBA detection of a Type 2 QSO at z=3.660 in the Chandra Deep Field South. This source is X-ray absorbed, shows only narrow emission lines in the optical sp…
Integral field spectroscopy of the ultraluminous X-ray source Holmberg II X-1
I. Lehmann, T. Becker, S. Fabrika +10
We present optical integral field observations of the H II region containing the ultraluminous X-ray source Holmberg II X-1. We confirm the existence of an X-ray ionized nebula as…
Exploring the X-ray Sky with the XMM-Newton Bright Serendipitous Survey
R. Della Ceca, T. Maccacaro, A. Caccianiga +11
ABRIDGED. We present "The XMM-Newton Bright Serendipitous Survey", two flux-limited samples with flux limit fx ~7E-14 cgs in the 0.5-4.5 keV (BSS) and 4.5-7.5 keV (HBSS) energy ban…
A transition to a low/soft state in the ultra-luminous compact X-ray source Holmberg II X-1
Gulab C. Dewangan, Takamitsu. Miyaji, Richard E. Griffiths +1
We present three XMM-Newton observations of the ultra-luminous compact X-ray source Holmberg II X-1 in its historical brightest and faintest states. The source was in its brightest…