Systematic errors in Sunyaev–Zeldovich surveys of galaxy cluster velocities
نویسندگان
چکیده
منابع مشابه
Weighing neutrinos with galaxy cluster surveys.
Large future galaxy cluster surveys, combined with cosmic microwave background observations, can achieve a high sensitivity to the masses of cosmologically important neutrinos. We show that a weak lensing selected sample of > or approximately 100,000 clusters could tighten the current upper bound on the sum of masses of neutrino species by an order of magnitude, to a level of 0.03 eV. Since thi...
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Galaxy cluster peculiar velocities can be inferred from high–sensitivity, high–resolution multiple–frequency observations in the 30 to 400 GHz range. While galaxy cluster counts and power spectra are sensitive to the growth factor, peculiar velocities are sensitive to the time–derivative of the growth factor and are hence complementary. Using linear perturbation theory, we forecast constraints ...
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Imaging of the Sunyaev-Zel’dovich (SZ) effect in galaxy clusters combined with cluster plasma x-ray diagnostics can measure the cosmic distance scale to high redshift. However, projecting the inverseCompton scattering and x-ray emission along the cluster line-of-sight introduces systematic errors in the Hubble constant, H0, because the true shape of the cluster is not known. In this paper I pre...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2008
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2008/08/030