Year: 2002
Type: article
Abstract: We show how one may expect a significant number of Sunyaev–Zel'dovich (SZ) detections in future Planck data without any of the typical assumptions needed in present component separation methods, such as concerning the power spectrum or the frequency dependence of any of the components, circular symmetry or a typical scale for the clusters. We reduce the background by subtracting an estimate of the point sources, dust and cosmic microwave background (CMB). The final SZ effect map is estimated in Fourier space. The catalogue of returned clusters is complete above flux ≈200 mJy (353 GHz), while the lowest flux reached by our method is ≈70 mJy (353 GHz). We predict a large number of detections (∼9000) over four-fifths of the sky. This large number of SZ detections will allow a robust and consistent analysis of the evolution of the cluster population with redshift and will have important implications for determining the best cosmological model.
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2055830535