The XMM-LSS survey. Survey design and first results

M. Pierre , I. Valtchanov , B. Altieri , S. Andreon , M. Bolzonella , M. Bremer , L. Disseau , S. Dos Santos

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P. Ghandi C. Jean F. Pacaud A. M. Read A. Refregier J. Willis C. Adami D. Alloin M. Birkinshaw L. Chiappetti A. Cohen A. Detal P.-A. Duc E. Gosset J. Hjorth L. R. Jones O. Le Fevre C. Lonsdale D. Maccagni A. Mazure B. McBreen H. McCracken Y. Mellier T. J. Ponman H. Quintana H. Rottgering A. Smette J. Surdej J.-L. Starck L. Vigroux S. D. M. White

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classification 🌌 astro-ph

keywords surveyclusterdensitydesignlargenumberresultsx-ray

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We have designed a medium deep large area X-ray survey with XMM - the XMM Large Scale Structure survey, XMM-LSS - with the scope of extending the cosmological tests attempted using ROSAT cluster samples to two redshift bins between 0<z<1 while maintaining the precision of earlier studies. Two main goals have constrained the survey design: the evolutionary study of the cluster-cluster correlation function and of the cluster number density. The results are promising and, so far, in accordance with our predictions as to the survey sensitivity and cluster number density. The feasibility of the programme is demonstrated and further X-ray coverage is awaited in order to proceed with a truly significant statistical analysis. (Abridged)

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The XMM-LSS survey. Survey design and first results

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