A serendipitous survey for galaxy clusters by the XMM-Newton survey science center

A. D. Schwope, G. Lamer, D. Burke, M. Elvis, M. G. Watson, M. P. Schulze, G. Szokoly, T. Urrutia

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We describe the initial results of a programme to detect and identify extended X-ray sources found serendipitously in XMM-Newton observations. We have analyzed 186 EPIC-PN images at high galactic latitude with a limiting flux of 1 × 10 -14 erg cm -2 s -1 and found 62 cluster candidates. Thanks to the enhanced sensitivity of the XMM-Newton telescopes, the new clusters found in this pilot study are on the average fainter, more compact, and more distant than those found in previous X-ray surveys. At our survey limit the surface density of clusters is about 5 deg -2 . We also present the first results of an optical follow-up programme aiming at the redshift measurement of a large sample of clusters. The results of this pilot study give a first glimpse on the potential of serendipitous cluster science with XMM-Newton based on real data. The largest, yet to be fulfilled promise is the identification of a large number of high-redshift clusters for cosmological studies up to z = 1 or 1.5.

Original languageEnglish
Pages (from-to)2604-2609
Number of pages6
JournalAdvances in Space Research
Volume34
Issue number12 SPEC.ISS.
DOIs
Publication statusPublished - Jan 1 2004

Keywords

  • Cosmology: large-scale structure
  • Galaxies: clusters
  • X-rays: surveys

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)

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    Schwope, A. D., Lamer, G., Burke, D., Elvis, M., Watson, M. G., Schulze, M. P., Szokoly, G., & Urrutia, T. (2004). A serendipitous survey for galaxy clusters by the XMM-Newton survey science center. Advances in Space Research, 34(12 SPEC.ISS.), 2604-2609. https://doi.org/10.1016/j.asr.2003.04.073