Günther Hasinger)

The main and unique  feature of the  XMM-Newton follow-up of the COSMOS field is to combine the XMM-Newton X-ray throughput, the highly efficient multiplexing of VLT/Vimos and the unprecedented solid angle coverage of difraction limited HST imaging over the largest solid angle and sensitivity ever achieved. We shall probe for the first time the 3D clustering as a function of redshift in the X-ray band and detect sufficient numbers of AGN to probe the accretion history at high redshift for the first time.

2009 January 15th: The XMM-COSMOS catalog has been released to the public via the IRSA archive. An accompanying paper describing the catalog has been accepted by the Astronomy and Astrophysics Journal (Cappelluti et al. 2009).
A list of papers based on XMM-COSMOS data publsihed in the past years or accepted for publication is available at this link

Current PN image from XMM/Cosmos
Fig. 1
Full XMM-Newton coverage of the COSMOS field
MOS + PN combined   (50 fields, 2 sq. deg.)!!!



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News and Updates

  • July 11th, 2006The full XMM-COSMOS program has been completed!!!
  • June 1st, 2005The first year of XMM-Newton observations has been completed!!

Alexis's view
Guenther's view Nico's view
  • June 1st, 2005 The sky coverage of the first-year AO3 observations is reported below, along with the exposure map of the 23 fields with "good" data:

  • May 20th, 2005Nico Cappelluti e Hermann Brunner have perfomed the EPIC source detection on the available 12 fields. Results are reported here.

  • February 15th, 2005: New images from the XMM-COSMOS field have been produced by Alexis Finoguenov and Nico Cappelluti.  The latest XMM image of the COSMOS field can always be found here. Nico Cappelluti has also produced the exposure map for all the available pointings as well as  the distribution of exposure times for PN and MOS (last column).

Fig. 2 Fig. 3
Exposure Map
 Exp. time distribution
  • January 15th, 2005: Nico Cappelluti e Hermann Brunner have perfomed the EPIC source detection on the available 12 fields. Results are reported here. A plot with the area covered versus X-ray flux is shown below:

  • January 1st, 2005: Pointings #s 1, 4, 6, 8, 9, 10, 11, 15, 17, 19 & 22, scheduled in November and December 2004, were effectively carried out by XMM. Pointing #16 was mostly lost due telescope shutdown during a  solar flare.

December 15th, 2004: The XMM-COSMOS team has been awarded with an additional 600 ksec from XMM in period AO4! The total exposure time on the field will be of 1.4 Msec.

  • May 30th, 2004: Today XMM-Newton observed our COSMOS Field #6  from 00:48 - 9:23 UT. The "live" radiation monitor on the XMM SOC homepage shows a quiescent background level throughout the observation (see shaded area in figure below).

  • May 11th, 2004: There is a new page dedicated to clusters in the XMM/COSMOS field following this link (courtesy: Alexis Finoguenoev).
  • February 6th, 2004: First look at the exposure corrected pn-CCD image of the first 5 pointings observed by XMM/Newton during December 6th-11th 2003 (courtesy: I. Lehmann).
First quick-look XMM pn-ccd

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Summary of the XMM source detection in the COSMOS field:
EPIC-PN pointlike sources from the first 12 pointings (as on September 2005)

X-ray band
Flux_limit [cgs]
Number of new sources (**)
0.5-2.0 keV
2.0-4.5 keV
4.96E-15 (2.0-10 keV)
4.5-10.0 keV
8.20E-15 (5.0-10 keV)


(*)  Number of sources detected in each band
(**) Number of sources detected in the corresponding band, but not detected in the softer bands.


We propose a mosaic of medium-deep XMM pointings to homogeneously cover a large (2 sq. degrees) and contiguous area of the COSMOS/VIMOS field. This field is (1) part of a breakthrough spectroscopic survey to be carried out by the z-COSMOS team, using 60 (already awarded) VLT nights with the VIMOS spectrograph, to provide ~50000 galaxy redshifts between 0.3 and 2.5 and, (2) target of the Cosmos HST/ACS treasury program, carried out using 640 HST orbits, to understand the interplay between Large Scale Structure, evolution and the formation of galaxies, Dark Matter - Energy and AGN. The main scientific objectives are the study of the formation and evolution of supermassive black holes, the cosmic evolution of their spatial distribution and the correlation with galaxy morphology and evolution.

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Main Scientific objectives are:
  • Formation and evolution of supermassive black holes,
  • Cosmic evolution of their spatial distribution and the
  • Correlation with observed galaxy morphology and evolution.

 XMM-Cosmos team at MPE:
  • Günther Hasinger (P.I. XMM-Cosmos proposal)
  • Ingo Lehmann
  • Vincenzo Mainieri
  • Marcella Brusa
  • Nico Cappelluti
  • Israel Matute
  • Hans Böhringer
  • Alexis Finoguenov
  • Hermann Brunner
The rest of XMM-Cosmos team:
  •  Andrea Comastri
  •  Martin Elvis
  •  Fabrizio Fiore
  •  Alberto Franceschini
  •  Roberto Gilli
  •  Richard Griffiths
  •  Giorgio Matt
  •  Takamitsu Miyaji
  •  Silvano Molendi
  •  Stephane Paltani
  •  David Sanders
  •  Nick Scoville
  •  Laurence Tresse
  •  C. Megan Urry
  •  Paolo Vettolani
  •  Gianni Zamorani

INAF-Oss. Bologna
INAF-Oss. Monte Porzio
Univ. di Padova
INAF-Oss. di Arcetri
Carnegie Mellon Univ.
Univ. Roma Tre
Carnegie Mellon Univ.
Lab. d'Astrophysique Marseille
Univ. Hawaii
Lab. d'Astrophysique Marseille
Yale University
INAF-Istituto di Radioastronomia
INAF-Oss. di Bologna

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Related links

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Page mantained by I. Matute and M. Brusa.   Last updated on May 20th, 2005