Existing publicly available computational tools ( Seljak & Zaldarriaga 1996 Lewis et al.
Another necessary task is to predict the performance of future surveys and future observational probes in order to maximise the potential of future experiments. One of the challenges of cosmology is to link the derived observable quantities from these cosmological surveys with the parameters of an underlying cosmological model. 2009, for more recent results and references therein). The past few decades have provided a previously innaccessible wealth of data with the advent of large surveys of the cosmic microwave background, galaxy clustering, cosmic shear, clusters, and supernovae (see Spergel et al. Key words: cosmology: miscellaneous / cosmology: theory / cosmological parameters / methods: numericalĬosmology is a rapidly advancing field thanks to recent progress in instrumentation, numerical simulations, and theoretical methods.
#COSMOLOGICAL REDSHIFT CALCULATOR ARCHIVE#
The code is freely available with documentation at, along with an interactive web interface and is part of the Initiative for Cosmology, a common archive for cosmological resources. The iCosmo package is described with a number of examples and command sequences. With its extensive documentation, it may also serve as a useful resource for teaching and for newcomers to the field of cosmology. iCosmo can also be used as an engine to perform cosmological calculations in batch mode, and forms a convenient adaptive platform for the development of further cosmological modules. The code is written in the IDL language and thus benefits from the convenient interactive features and scientific libraries available in this language. The code also allows for calculation of cosmological forecasts with Fisher matrices, which can be manipulated to combine different surveys and cosmological probes. The associated errors for these observable quantities can be derived for customised surveys, or for pre-set values corresponding to current or planned instruments.
It also computes derived observed quantities for several cosmological probes such as cosmic shear, baryon acoustic oscillations, and type Ia supernovae. Computing distance measures, the matter power spectrum, and the growth factor is supported for any values of the cosmological parameters.
#COSMOLOGICAL REDSHIFT CALCULATOR SOFTWARE#
iCosmo is a software package to perfom interactive cosmological calculations for the low-redshift universe. The interactive software package iCosmo, designed to perform cosmological calculations is described. Oxford Astrophysics, Department of Physics,Īims. UMR 7158 (CNRS)/Service d’Astrophysique, AIM, CEA Saclay,Į-mail: for Atronomy, ETH Hoenggerberg Campus, Physics
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