A matched filter approach for blind joint detection of galaxy clusters in X-ray and SZ surveys

  title={A matched filter approach for blind joint detection of galaxy clusters in X-ray and SZ surveys},
  author={Paula Tarr'io and J. B. Melin and Monique D. Arnaud},
  journal={Astronomy \& Astrophysics},
The combination of X-ray and Sunyaev–Zeldovich (SZ) observations can potentially improve the cluster detection efficiency, when compared to using only one of these probes, since both probe the same medium, the hot ionized gas of the intra-cluster medium. We present a method based on matched multifrequency filters (MMF) for detecting galaxy clusters from SZ and X-ray surveys. This method builds on a previously proposed joint X-ray–SZ extraction method and allows the blind detection of clusters… 
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