activity
19982009
most citedXMM-Newton observation of the Lockman Hole II. Spectral analysis

210 citations · 704 across the 11 of their papers we have counts for

collaborators

12 papers

astro-ph.CO2009★ 15 cited

Spectral Energy Distributions of type 2 QSOs: obscured star formation at high redshifts

D. Rigopoulou, V. Mainieri, O. Almaini +6

We present new mid-infrared and submillimetre observations for a sample of eight high redshift type-2 QSOs located in the Chandra Deep Field South. The sources are X-ray absorbed w…

astro-ph2006★ 111 cited

The XMM-Newton wide-field survey in the COSMOS field. IV: X-ray spectral properties of Active Galactic Nuclei

V. Mainieri, G. Hasinger, N. Cappelluti +25

We present a detailed spectral analysis of point-like X-ray sources in the XMM-COSMOS field. Our sample of 135 sources only includes those that have more than 100 net counts in the…

astro-ph2004★ 41 cited

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…

astro-ph2004★ 64 cited

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…

astro-ph2004★ 117 cited

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…

astro-ph2004★ 72 cited

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…