Cosmology with SZ and X-ray cluster surveys

Details Cosmology with SZ and X-ray cluster surveys Cosmology with SZ and X-ray cluster surveys

2000-01-07

arxiv.org/abs/astro-ph/0001106v1

Astronomy and Astrophysics

Astrophysics

5 pages, 2 postscript figures, Contribution to ``Large Scale Structure in the X-ray Universe'' Workshop, Santorini, Greece, Se

Scientific paper

Hydrodynamical simulations are used in combination with the Press-Schechter expression to simulate Sunyaev-Zel'dovich (SZ) galaxy cluster sky maps. These are used to gauge the ability of future SZ observations to provide information about the cosmological parameters H_0, Omega_M, and the gas fraction f_g in clusters. This work concentrates on prospects for AMI, the Arcminute MicroKelvin Imager, a new type of compact interferometric array currently proposed in Cambridge. The expectations are contrasted with those for X-ray missions, such as XMM, and the benefits of combining SZ and X-ray data are highlighted.

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