![]() Key words: cosmology: theory / cosmology: observations / dark matter / dark energy / large-scale structure of Universe This can have a strong impact on multiple tracer analyses, and when combining catalogues selected at different redshifts. Concurrently, we show that it is possible to achieve almost unbiased constraints on f σ 8 provided that the analysis is restricted to a proper range of scales that depends non-trivially on the properties of the sample. If the latter is kept fixed, the error depends on both redshift and sample selection due to the scale-dependent impact of non-linearities if not properly modelled. We find that the systematic error on f σ 8 depends significantly on the range of scales considered for the fit. We estimated f σ 8 by modelling both the monopole and the full two-dimensional anisotropic clustering, using the dispersion model. Specifically, we measured the redshift-space two-point correlation function of mock samples of galaxies, galaxy clusters and active galactic nuclei, extracted from the Magneticum simulation, in the redshift range 0.2 ≤ z ≤ 2, and adopting different sample selections. We used a large hydrodynamic simulation to investigate how the systematic error on the linear growth rate, f, caused by model uncertainties, depends on sample selections and co-moving scales. ![]() However, to extract unbiased physical constraints, the clustering pattern has to be modelled accurately, taking into account the effects of non-linear dynamics at small scales, and properly describing the link between the selected cosmic tracers and the underlying dark matter field. Redshift-space clustering anisotropies caused by cosmic peculiar velocities provide a powerful probe to test the gravity theory on large scales. 1, 81679 München, Germanyĥ Max-Planck-Institut für Astrophysik, Karl-Schwarzschild Strasse 1, 85748 Garching bei München, GermanyĪims. ![]() Astronomical objects: linking to databasesįederico Marulli 1 ,2 ,3, Alfonso Veropalumbo 1, Lauro Moscardini 1 ,2 ,3, Andrea Cimatti 1 and Klaus Dolag 4 ,5ġ Dipartimento di Fisica e Astronomia - Università di Bologna, viale Berti Pichat 6/2, 40127 Bologna, ItalyĮ-mail: INAF–Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italyģ INFN–Sezione di Bologna, viale Berti Pichat 6/2, 40127 Bologna, ItalyĤ Department of Physics, Ludwig-Maximilians-Universität, Scheinerstr.Including author names using non-Roman alphabets.Suggested resources for more tips on language editing in the sciences ![]() Punctuation and style concerns regarding equations, figures, tables, and footnotes ![]()
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