The XXL survey: First results and future

Pierre M., Adami C., Birkinshaw M., Chiappetti L., Ettori S., Evrard A., et al.

ASTRONOMISCHE NACHRICHTEN, cilt.338, ss.334-341, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 338
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1002/asna.201713352
  • Sayfa Sayısı: ss.334-341


The XXL survey currently covers two 25 deg(2) patches with XMM observations of similar to 10 ks. We summarize the scientific results associated with the first release of the XXL dataset, which occurred in mid-2016. We review several arguments for increasing the survey depth to 40 ks during the next decade of XMM operations. X-ray (z < 2) cluster, (z < 4) active galactic nuclei (AGN), and cosmic background survey science will then benefit from an extraordinary data reservoir. This, combined with deep multi-lambda observations, will lead to solid standalone cosmological constraints and provide a wealth of information on the formation and evolution of AGN, clusters, and the X-ray background. In particular, it will offer a unique opportunity to pinpoint the z > 1 cluster density. It will eventually constitute a reference study and an ideal calibration field for the upcoming eROSITA and Euclid missions.